Battery Storage Companies in London: 188 Active Firms (2026)

Updated May 2026

Battery storage companies in London develop, finance and operate assets that store electricity and provide grid services across the capital.

Buying centres sit mainly with energy infrastructure teams, corporate energy managers and finance functions that need asset-backed storage, optimisation and flexibility capability. The London cohort tends to sell into commercial, industrial and utility-scale customers, with engagements shaped by site control, grid access, project finance and long-running service obligations. Some firms own or operate assets themselves; others provide optimisation, development support or financing around the same electricity storage stack. Sales cycles therefore look closer to infrastructure procurement than short subscription buying, with diligence centred on asset performance, revenue routes and counterparty risk.

London has 188 actively trading battery storage companies, giving the capital a fairly specialised but visible cohort rather than a broad general energy roll-up. Reported headcount totals 710 employees, which points to a market with many lean project, finance and optimisation teams alongside a smaller set of operating businesses. The commercial centre of gravity is not only London demand for storage; many firms use the capital as a base for work across wider UK electricity markets, especially where financing, corporate energy procurement and grid-services contracting meet.

Operating requirements are shaped by the role a firm plays in the asset chain. Developers and owners face planning, connection, metering, safety and market-access obligations; optimisation specialists tend to sit closer to dispatch, trading and balancing-service rules; financiers focus on revenue certainty and counterparty exposure. Only 13 London firms in the cohort report turnover above £5M, so much of the market appears to sit below the scale at which regulatory, engineering and trading functions can be fully separated. That tends to favour partnerships between asset specialists, energy-market operators and capital providers rather than wholly self-contained platforms.

The cohort appears to be pulled between early-commercial activity and asset-scale discipline. Younger firms tend to cluster around development pipelines, optimisation models and advisory-heavy delivery, while more mature operators need balance-sheet capacity, risk controls and access to recurring contracted revenues. Scarcity of larger turnover businesses suggests that scale is still hard to sustain without external capital or partnerships. Over time, the London base may remain useful for finance, trading and corporate-energy relationships, but asset ownership is likely to depend on execution in wider UK electricity markets rather than the capital alone.

What’s in the file

One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.

Company data

Company name

Website

City & address

Companies House no.

Incorporation date

SIC codes & industry tags

What they do / who they sell to

Turnover, profit, cash & net assets

Employees

Growth (YoY & 3-year)

Financial-health score & flags

Sales-readiness score

Detected technologies

Verified directors — included

Director names

Director roles

Appointment dates

188

Active firms

2026

£5M+ firms

Companies above £5M revenue

Recent incorporations

Incorporated since 2022

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Key facts

About 6% of the trading cohort reports turnover above £5M (13 of 188 firms) — the rest sits below that revenue band.

21% of the cohort was incorporated since 2022 (41 firms), so a sizeable share is in its first few filing cycles.

London battery storage firms sit between infrastructure finance, power-market operations and grid-service delivery.

Dense urban networks put the matching of electricity supply and demand close to the commercial case for storage assets.

The sector appears to mix project companies, developers, financiers and grid-service operators rather than one operating model.

Asset ownership and contracted operations can sit in separate corporate entities, so operating scale is not always visible in payroll alone.

Top London Battery Storage companies

Company

Sales readinessHow strongly each company matches this list’s ideal-customer profile. An AI model assesses what each company does (from its website), its sector and size, and scores its overall fit 0–100. Companies are listed highest score first, so the best-fit prospects appear at the top.

Turnover

Employees

Growth (yoy)Year-on-year change in UK headcount, from filed accounts.

Financial healthComposite 0–100 score from recent XBRL filings (profitability, net assets, liquidity, cash, headcount). Bands: Strong, Healthy, Stable, Weak, Distressed.

Location

Terralayr UK Limited

Terralayr

Renewable EnergyUtilitiesStartup

11 employeesInc. 2024LondonCH 15480305

trlyr.com

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What does Terralayr UK Limited do?

Develops, owns and operates grid-scale battery energy storage systems and a digital platform providing on-demand electricity flexibility. Enables utilities, grid operators, power traders and…

Who does Terralayr UK Limited sell to?

Serves energy-sector businesses including utilities, grid operators, power traders and aggregators needing flexible capacity, plus BESS investors and project partners involved in grid-scale battery…

Key contacts (1)

Samuel Martin Boswell

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£128.3KEstimate

Founded

2 years ago

Since Feb 2024

London

Financial health

—

Financial Health

N/A

Location

19 Langham Street

London, W1W 6BP

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Enka Energy Transition Ltd

Enka Energy Transition

Renewable EnergyUtilities

5 employeesInc. 2024LondonCH 15772808

enka-energy.com

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What does Enka Energy Transition Ltd do?

Develops, finances, builds, owns and operates battery energy storage systems (BESS). Integrates storage with existing grid connections and infrastructure to provide energy flexibility, support…

Who does Enka Energy Transition Ltd sell to?

Serves B2B infrastructure owners and energy-sector partners across Europe, including industrial sites, renewable energy asset owners and traction substation operators with underused grid connections.

Key contacts (3)

Ignacio Martinez Sanchez

Director

Sarang Boddupalli

Director

Carlos Erik Martel Kortsch

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£293.1KEstimate

Founded

2 years ago

Since Jun 2024

London

Financial health

—

Financial Health

N/A

Location

16 Stratford Place

London, W1C 1BF

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ION Ventures

Renewable EnergyUtilities

20 employeesInc. 2018LondonCH 11525716

ion.ventures

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Financial sub-scores

Computed from 3 filings

Cash0 / 100

Headcount100 / 100

What does ION Ventures do?

Develops, builds and operates renewable energy and battery storage projects. Designs grid flexibility solutions and manages project development, financing, construction and operation of energy…

Who does ION Ventures sell to?

Serves energy infrastructure investors, utilities and grid operators seeking renewable generation, energy storage and grid flexibility assets across the UK, Europe, South Asia and Southeast Asia.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£208.6KEstimate

Founded

7 years ago

Since Aug 2018

London

Financial health

Financial Health

Stable

Stable · Hiring · 29% CAGR over 2y

HiringFinancial distressTechnical insolvency

Location

Warnford Court, 29 Throgmorton Street

London, EC2N 2AT

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Terra Firma (Hereford) Ltd

Noriker Power

Renewable EnergyUtilities

2 employeesInc. 2020LondonCH 12414656

noriker.co.uk

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Financial sub-scores

Computed from 5 filings

Net assets100 / 100

Cash0 / 100

What does Terra Firma (Hereford) Ltd do?

Develops, designs and builds grid-scale battery energy storage systems for renewable power networks. Provides project management, engineering integration, control system integration, software for…

Who does Terra Firma (Hereford) Ltd sell to?

Serves UK and Ireland renewable energy stakeholders, including grid-scale battery storage asset owners/operators and landowners with sites suitable for energy storage projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£14.7KEstimate

Founded

6 years ago

Since Jan 2020

London

Financial health

Financial Health

Healthy

Location

6-8 Great Eastern Street

London, EC2A 3NT

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MALDON BESS LIMITED

Maldon Bess

Renewable EnergyUtilities

Inc. 2021LondonCH 13645088

greeninvestmentgroup.com

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What does MALDON BESS LIMITED do?

Develops, owns and operates a utility‑scale battery energy storage system that stores and dispatches electricity to the power grid, providing balancing and flexibility services that support the…

Who does MALDON BESS LIMITED sell to?

Serves institutional investors, infrastructure partners and energy market stakeholders involved in green infrastructure and the UK electricity system, including buyers seeking exposure to renewable…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£1MEstimate

Founded

4 years ago

Since Sep 2021

London

Financial health

—

Financial Health

N/A

Location

31-34 Alfred Place

London, WC1E 7DP

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Conrad Energy

Renewable EnergyUtilities

2 employeesInc. 2020LondonCH 12880133

conradenergy.co.uk

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What does Conrad Energy do?

Develops and operates flexible energy generation and storage assets including gas, battery, solar and wind facilities. Supplies, buys, sells and manages electricity for business customers and…

Who does Conrad Energy sell to?

Serves UK business energy customers, especially heavy energy users and energy intermediaries, alongside grid operators and landowners involved in energy infrastructure.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£285KEstimate

Founded

5 years ago

Since Sep 2020

London

Location

6 Chesterfield Gardens, Mayfair

London, W1J 5BQ

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HIGHVIEW LTD

Highview Power

Renewable EnergyUtilities

3 employeesInc. 2016Ilford, EssexCH 10077461

highviewpower.com

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Financial sub-scores

Computed from 5 filings

Net assets0 / 100

Headcount100 / 100

What does HIGHVIEW LTD do?

Designs, builds and operates grid‑scale energy infrastructure, including long‑duration energy storage systems. Provides power systems analytics, technology integration and project investment to…

Who does HIGHVIEW LTD sell to?

Serves governments, grid operators, utilities and large enterprises seeking clean energy infrastructure, grid stability and long-duration storage solutions for energy networks and power systems.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£304.6KEstimate

Founded

10 years ago

Since Mar 2016

Ilford, Essex

Financial health

Financial Health

Weak

Weak · Hiring · 11% CAGR over 4y

HiringFinancial distressTechnical insolvency

Location

16 Cameron Rd

Ilford, Essex, IG3 8LB

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VARCO ENERGY HOLDCO 1 LIMITED

Varco Energy

Renewable Energy

Inc. 2023LondonCH 14940707

varco.energy

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Financial sub-scores

Computed from 2 filings

Net assets0 / 100

What does VARCO ENERGY HOLDCO 1 LIMITED do?

Develops, owns and operates grid‑scale battery energy storage systems. Builds and manages BESS assets that store electricity, provide grid balancing and frequency services, and support integration of…

Who does VARCO ENERGY HOLDCO 1 LIMITED sell to?

Serves UK energy-sector counterparties, including grid operators, electricity market participants, renewable power developers and infrastructure investors needing utility-scale battery storage…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£474KEstimate

Founded

3 years ago

Since Jun 2023

London

Financial health

Financial Health

Distressed

Financial distressTechnical insolvency

Location

2nd Floor, 27, Kingly Street

London, W1B 5QE

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BasePower

Renewable EnergyUtilities

0 employeesInc. 2018LondonCH 11550492

basepower.com

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Financial sub-scores

Computed from 5 filings

Net assets0 / 100

Cash100 / 100

What does BasePower do?

Develops, finances and operates on-site energy infrastructure including combined heat and power plants, solar PV, energy storage, microgrids and heat networks. Provides energy centres and…

Who does BasePower sell to?

Serves UK businesses and developers in real estate, logistics, industrial, food and data centre sectors, especially organisations with high energy demand or grid capacity constraints.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£36.3KEstimate

Founded

7 years ago

Since Sep 2018

London

Financial health

Financial Health

Weak

Weak · -60% CAGR over 5y

Financial distressTechnical insolvency

Location

2nd Floor Regis House, 45 King William Street

London, EC4R 9AN

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FRV Powertek Limited

FRV TH Powertek

Renewable EnergyUtilities

7 employeesInc. 2022LondonCH 14161993

frvpowertek.com

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Financial sub-scores

Computed from 3 filings

Cash0 / 100

What does FRV Powertek Limited do?

Develops, constructs, owns and operates battery energy storage system (BESS) projects. Acts as a platform for building and managing a portfolio of grid‑scale energy storage assets that store…

Who does FRV Powertek Limited sell to?

Serves UK energy-sector counterparties, including grid operators, electricity markets, utilities and renewable generators needing battery storage capacity and grid-balancing services.

Key contacts (3)

Tristan Jacobo Higuero Jimenez

Director

Ravinder Singh Shan

Director

Andrea Fontana Gribodo

Director

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Company vitals

UK Headcount

UK Revenue

£665.9KEstimate

Founded

4 years ago

Since Jun 2022

London

Financial health

Financial Health

Distressed

Financial distressTechnical insolvency

Location

Building 7 Chiswick Park, 566 Chiswick High Road

London, W4 5YG

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KX Power

Renewable EnergyUtilities

5 employeesInc. 2020LondonCH 13100042

kxpower.co.uk

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What does KX Power do?

Develops, invests in and manages utility‑scale battery energy storage and power infrastructure projects. Provides project development, EPCM, asset management, solar PV integration, energy trading and…

Who does KX Power sell to?

Serves B2B energy and infrastructure customers, including utility-scale storage asset owners, data centre developers/operators, and partners seeking solar PV and critical power projects worldwide.

Key contacts (1)

Ross Nathan MacKey

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£115.8KEstimate

Founded

5 years ago

Since Dec 2020

London

Financial health

—

Financial Health

N/A

N/A · 58% CAGR over 2y

Location

30 Orange Street

London, WC2H 7HF

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ion Ventures

Renewable EnergyUtilities

1 employeesInc. 2018LondonCH 11635496

ion.ventures

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Financial sub-scores

Computed from 2 filings

Net assets100 / 100

Cash4 / 100

What does ion Ventures do?

Develops, builds and operates renewable energy and energy storage projects. Designs grid flexibility solutions and manages project development, construction and operations, supporting integration of…

Who does ion Ventures sell to?

Serves energy infrastructure investors, project finance partners, grid operators and energy-sector stakeholders seeking renewable generation, storage and grid flexibility assets across the UK,…

Key contacts (2)

Matthew Holgate

Director

Andrew Paul Klump

Director

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Company vitals

UK Headcount

UK Revenue

£24.2KEstimate

Founded

7 years ago

Since Oct 2018

London

Financial health

Financial Health

Healthy

Location

Warnford Court, 29 Throgmorton Street

London, EC2N 2AT

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Noriker Perseverance Ltd

Noriker Power

Renewable EnergyUtilities

2 employeesInc. 2017London, GloucestershireCH 10604667

noriker.co.uk

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Financial sub-scores

Computed from 5 filings

Net assets0 / 100

Cash100 / 100

Headcount100 / 100

What does Noriker Perseverance Ltd do?

Develops, designs and builds grid‑scale battery energy storage systems. Provides project management, engineering integration, control system and software development, and optimisation services…

Who does Noriker Perseverance Ltd sell to?

Serves B2B customers in the UK and Ireland renewable energy market, including battery storage asset owners, grid participants and landowners with sites suitable for energy storage projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£132.1KEstimate

Founded

9 years ago

Since Feb 2017

London, Gloucestershire

Financial health

Financial Health

Stable

Stable · Hiring · 17% CAGR over 4y

HiringFinancial distressTechnical insolvency

Location

6-8 Great Eastern Street

London, Gloucestershire, EC2A 3NT

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FLUENCE ENERGY UK LIMITED

Fluence

Renewable EnergySaaS

63 employeesInc. 2022LondonCH 14401806

fluenceenergy.com

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Financial sub-scores

Computed from 2 filings

Net assets40 / 100

Cash100 / 100

Headcount100 / 100

What does FLUENCE ENERGY UK LIMITED do?

Develops and supplies battery energy storage systems for electricity networks and renewable energy projects. Provides related services and cloud-based software for asset performance management,…

Who does FLUENCE ENERGY UK LIMITED sell to?

Serves utilities, grid/network operators, renewable energy developers and asset owners, and large industrial energy users seeking storage and software for renewables and storage assets.

Key contacts (3)

Ian O'Malley

Director

Julian Felix Jansen

Director

Brian Perusse

Director

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Company vitals

UK Headcount

UK Revenue

£41.7MEstimate

Founded

3 years ago

Since Oct 2022

London

Financial health

Financial Health

Healthy

Healthy · Hiring · 199% CAGR over 1y

Hiring

Location

Unit 180, 3rd Floor Exmouth House 3/11 Pine Street, Farringdon

London, EC1R 0JH

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Eku Energy

Renewable Energy

1 employeesInc. 2022LondonCH 14324598

ekuenergy.com

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What does Eku Energy do?

Develops, owns and invests in battery energy storage system projects for electricity networks. Manages development, financing and operation of grid‑scale battery assets and supports energy trading…

Who does Eku Energy sell to?

Serves B2B energy stakeholders, including national electricity networks, utilities, energy market participants, infrastructure partners and project developers across Australia, Italy, Japan, New…

Key contacts (5)

Bradley Patrick McNeely

Director

Kate Louise Anderson

Director

Matteo Zanni

Director

Aun Mela

Director

Gregory Scott Callman

Director

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Company vitals

UK Headcount

UK Revenue

£285.7KEstimate

Founded

3 years ago

Since Aug 2022

London

Location

31-34 Alfred Place

London, WC1E 7DP

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BW ESS

Renewable Energy

11 employeesInc. 2017LondonCH 11122632

bw-ess.com

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Financial sub-scores

Computed from 2 filings

Headcount72 / 100

What does BW ESS do?

Develops, owns and operates utility-scale battery energy storage systems. Invests in and delivers BESS projects that store electricity, support grid stability, integrate renewable power and…

Who does BW ESS sell to?

Serves B2B energy market participants, grid operators, renewable energy developers and energy infrastructure investors seeking utility-scale battery storage capacity and partnerships in global power…

Key contacts (1)

Roberto Jimenez Chaves

Director

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Company vitals

UK Headcount

UK Revenue

£595.3KEstimate

Founded

8 years ago

Since Dec 2017

London

Financial health

Financial Health

Healthy

Healthy · Hiring · 22% CAGR over 1y

Hiring

Location

5th Floor, 53 Parker Street

London, WC2B 5PT

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Kona Asset 3 Limited

Kona Energy

Renewable EnergyUtilities

Inc. 2022London, Greater LondonCH 14521622

konaenergy.co.uk

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Financial sub-scores

Computed from 3 filings

Net assets0 / 100

What does Kona Asset 3 Limited do?

Develops grid-scale battery energy storage projects for the electricity network. Identifies and secures land near substations, obtains planning and grid connections, and develops large battery…

Who does Kona Asset 3 Limited sell to?

Targets UK landowners with 2–10 acres near electricity substations and investors interested in large-scale energy storage projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£72KEstimate

Founded

3 years ago

Since Dec 2022

London, Greater London

Financial health

Financial Health

Distressed

Financial distressTechnical insolvency

Location

Kona Energy, Labs House, 15-19 Bloomsbury Way

London, Greater London, WC1A 2TH

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Highview Power

Renewable EnergyUtilities

7 employeesInc. 2002LondonCH 04489271

highviewpower.com

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What does Highview Power do?

Designs, develops and operates grid-scale energy infrastructure, including long‑duration energy storage systems using liquid air technology. Provides power system analytics and investment structuring…

Who does Highview Power sell to?

Serves governments, electricity grid operators, utilities and large enterprises seeking grid-scale clean energy, energy storage, stability and strategic energy infrastructure solutions.

Key contacts (12)

John Mark Isherwood

Director

Nyawira Wangari Kariuki

Director

Dave Kirwan

Director

Ingmar Grebien

Director

Kasper Bech Trebbien

Director

Sebastian Gschwender

Director

Laura Sandys

Director

Gerhard Hermann Cromme

Director

Tomas William Harju-Jeanty

Director

Colin Thomas Roy

Director

Paul Nicholas Woollacott

Director

Niko Elmaleh

Director

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Company vitals

UK Headcount

UK Revenue

£367.8KEstimate

Founded

24 years ago

Since Jul 2002

London

Location

First Floor Hobhouse Court, Suffolk Street

London, SW1Y 4HH

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Elmya RPC Dover

Renewable Energy

1 employeesInc. 2022LondonCH 14535621

renewablepowercapital.com

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What does Elmya RPC Dover do?

Develops, finances, constructs, owns and operates renewable energy and battery storage projects. Manages pipelines of wind, solar and grid-scale energy storage assets, supporting electricity…

Who does Elmya RPC Dover sell to?

Serves institutional investors and energy-sector partners seeking exposure to renewable power and storage projects across Europe, alongside local communities affected by project sites.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£109KEstimate

Founded

3 years ago

Since Dec 2022

London

Location

Uk House 5th Floor, 164-182 Oxford Street

London, W1D 1NN

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CONSTANTINE ENERGY HOLDINGS LIMITED

Constantine Energy

Renewable EnergyUtilities

3 employeesInc. 2022LondonCH 14233854

constantinegroup.com/constantine-energy-storage

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Financial sub-scores

Computed from 2 filings

Cash23 / 100

Headcount40 / 100

What does CONSTANTINE ENERGY HOLDINGS LIMITED do?

Develops, owns and operates battery energy storage systems (BESS) for the electricity grid. Invests in and manages large-scale storage projects under development, building a portfolio intended to…

Who does CONSTANTINE ENERGY HOLDINGS LIMITED sell to?

Serves UK electricity system operators, grid networks and energy-market counterparties that require balancing and reliability services from utility-scale battery storage assets.

Key contacts (1)

Iuliia Gubar

Director

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Company vitals

UK Headcount

UK Revenue

£4.2MEstimate

Founded

4 years ago

Since Jul 2022

London

Financial health

Financial Health

Weak

Weak · 0% CAGR over 1y

Location

Uk House 5th Floor, 164-182 Oxford Street

London, W1D 1NN

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EKU ENERGY PROJECTS (UK) LIMITED

Eku Energy

Renewable Energy

Inc. 2021LondonCH 13212922

ekuenergy.com

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Financial sub-scores

Computed from 2 filings

Net assets85 / 100

What does EKU ENERGY PROJECTS (UK) LIMITED do?

Acts as a holding and investment company for battery energy storage system (BESS) projects. Develops, owns and manages grid-scale battery storage assets that store electricity and supply power to…

Who does EKU ENERGY PROJECTS (UK) LIMITED sell to?

Serves electricity networks, project partners and infrastructure investors involved in battery energy storage, alongside local communities affected by projects. Targets energy-sector stakeholders…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£3.3MEstimate

Founded

5 years ago

Since Feb 2021

London

Financial health

Financial Health

Strong

Location

31-34 Alfred Place

London, WC1E 7DP

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VPI

UtilitiesRenewable Energy

6 employeesInc. 2013LondonCH 08484743

vpi.energy

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What does VPI do?

Develops, owns and operates power generation assets and energy infrastructure. Provides electricity generation, peaking power, energy storage and carbon capture projects, and delivers energy trading,…

Who does VPI sell to?

Serves B2B customers in the power and energy sector, including organisations involved in energy projects, power system operations, electricity storage and carbon capture across the UK, Ireland and…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£425.9KEstimate

Founded

13 years ago

Since Apr 2013

London

Location

Vpi, 10th Floor, Nova South, 160 Victoria Street

London, SW1E 5LB

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VOLTARIA FINTECH LIMITED

Voltaria

Renewable EnergyStartup

Inc. 2023Barnet, HertsCH 14978900

voltaria.co.uk/about-us

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Financial sub-scores

Computed from 2 filings

Net assets40 / 100

What does VOLTARIA FINTECH LIMITED do?

Develops, constructs and operates grid‑scale battery energy storage systems. Manages the development, construction and market operation of battery energy storage assets that store electricity and…

Who does VOLTARIA FINTECH LIMITED sell to?

Serves UK electricity and flexible energy markets, targeting grid operators, utilities and energy-sector counterparties involved in renewable generation and battery storage infrastructure.

Key contacts (1)

Fabricio Mercier

Director

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Company vitals

UK Headcount

UK Revenue

£510.5KEstimate

Founded

3 years ago

Since Jul 2023

Barnet, Herts

Financial health

Financial Health

Stable

Location

Associates House, 118a East Barnet Road

Barnet, Herts, EN4 8RE

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Rassau Grid Services Limited

Welsh Power

Renewable EnergyUtilities

Inc. 2016LondonCH 10211708

welshpower.com

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Financial sub-scores

Computed from 2 filings

Cash100 / 100

What does Rassau Grid Services Limited do?

Develops, constructs and operates distributed power and energy infrastructure, including gas‑fired reserve and peaking plants, grid stability projects and battery storage systems. Provides project…

Who does Rassau Grid Services Limited sell to?

Serves B2B energy-sector customers, including owners, investors and developers of power generation, grid stability, battery and reserve assets, plus electricity network stakeholders across the UK.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£5.3MEstimate

Founded

10 years ago

Since Jun 2016

London

Financial health

100

Financial Health

Strong

Location

3rd Floor, 24 Savile Row

London, W1S 2ES

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Renewable Power Capital

Renewable Energy

1 employeesInc. 2022LondonCH 14059928

renewablepowercapital.com

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What does Renewable Power Capital do?

Develops, finances, constructs, owns, and operates renewable energy generation and battery energy storage projects. Acts as an investment platform managing wind, solar, and storage assets and…

Who does Renewable Power Capital sell to?

Serves investors seeking stable returns from European renewable energy and storage assets, with activity focused on utility-scale project portfolios across the United Kingdom, Finland, Italy and…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£109.6KEstimate

Founded

4 years ago

Since Apr 2022

London

Financial health

—

Financial Health

N/A

Location

Uk House 5th Floor, 164-182 Oxford Street

London, W1D 1NN

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British Solar Renewables

Renewable Energy

6 employeesInc. 2012LondonCH 08264798

britishrenewables.com

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What does British Solar Renewables do?

Provides development, construction and operation of renewable energy projects, particularly utility-scale solar parks and battery storage. Activities include project design, grid connection, asset…

Who does British Solar Renewables sell to?

Serves UK corporates, public authorities, landowners, farmers, investors and local communities involved in utility-scale renewable energy projects, power purchase agreements and solar, wind or…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£104KEstimate

Founded

13 years ago

Since Oct 2012

London

Location

5th Floor North Side,, 7-10 Chandos Street

London, W1G 9DQ

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Virmati Energy Ltd

Field

Renewable EnergyUtilities

1 employeesInc. 2020LondonCH 13095982

field.energy

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Financial sub-scores

Computed from 3 filings

Headcount0 / 100

What does Virmati Energy Ltd do?

Develops, finances, builds and operates renewable energy infrastructure focused on grid-scale battery storage systems. Develops battery sites and networks that store electricity and supply power to…

Who does Virmati Energy Ltd sell to?

Serves grid-scale energy markets and partners with landowners and renewable energy developers across the UK and Europe seeking battery storage sites and infrastructure partnerships.

Key contacts (1)

Philip Jerome Sutterby

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£593.1KEstimate

Founded

5 years ago

Since Dec 2020

London

Financial health

Financial Health

Distressed

Distressed · -85% CAGR over 2y

Financial distress

Location

Fora Montacute Yards, Shoreditch High St

London, E1 6HU

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Ilos

Renewable Energy

12 employeesInc. 2021LondonCH 13421441

ilos-energy.co.uk

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Financial sub-scores

Computed from 3 filings

Headcount100 / 100

What does Ilos do?

Develops, finances, builds and operates solar farms and battery energy storage projects. Partners with landowners to lease land for renewable energy installations and manages project development,…

Who does Ilos sell to?

Targets UK landowners, especially farmers and estate owners seeking agricultural income diversification, plus local councils and community stakeholders involved in solar, battery and energy storage…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£141.5KEstimate

Founded

5 years ago

Since May 2021

London

Financial health

100

Financial Health

Strong

Strong · Hiring · 100% CAGR over 2y

Hiring

Location

Leytonstone House, 3 Hanbury Drive

London, E11 1GA

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Renewable Power Capital

Renewable Energy

1 employeesInc. 2022LondonCH 14142767

renewablepowercapital.com

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What does Renewable Power Capital do?

Develops, finances, constructs, owns and operates renewable energy and battery storage projects, including wind and other power generation assets, managing project development and investment to…

Who does Renewable Power Capital sell to?

Serves investors seeking stable returns from European renewable energy and storage projects, plus energy-sector partners and local stakeholders involved in utility-scale project delivery.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£109.9KEstimate

Founded

4 years ago

Since May 2022

London

Financial health

—

Financial Health

N/A

Location

Uk House 5th Floor, 164-182 Oxford Street

London, W1D 1NN

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Equinor Welkin Mill Limited

Noriker Power

Renewable EnergyUtilities

2 employeesInc. 2018LondonCH 11140788

noriker.co.uk

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Financial sub-scores

Computed from 3 filings

Net assets40 / 100

Cash100 / 100

Headcount40 / 100

What does Equinor Welkin Mill Limited do?

Provides management and technical services for electricity production and trading, including development, design and optimisation of battery energy storage assets and control systems supporting grid…

Who does Equinor Welkin Mill Limited sell to?

Serves B2B energy-sector customers and landowners involved in battery storage and renewable grid projects, with an explicit focus on the UK and Ireland.

Key contacts (1)

Adrian Bauge Holm

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£1.1MEstimate

Founded

8 years ago

Since Jan 2018

London

Financial health

Financial Health

Stable

Stable · 0% CAGR over 2y

Location

1 Kingdom Street

London, W2 6BD

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DAIS ENERGY LIMITED

Dais Energy

Renewable EnergyStartup

2 employeesInc. 2023LondonCH 15286840

daisenergy.com

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What does DAIS ENERGY LIMITED do?

Develops, constructs and operates grid-scale energy storage projects across European electricity markets. Focuses on battery storage infrastructure designed to support power networks, enable…

Who does DAIS ENERGY LIMITED sell to?

Serves European energy networks, grid operators, renewable energy stakeholders and infrastructure investors involved in energy storage and grid decarbonisation projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£539.6KEstimate

Founded

2 years ago

Since Nov 2023

London

Financial health

—

Financial Health

N/A

Location

1st Floor, 86 Jermyn Street

London, SW1Y 6JD

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RE Projects Development Limited

Repd

Renewable Energy

14 employeesInc. 2013LondonCH 08805101

repd.co.uk

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Financial sub-scores

Computed from 5 filings

Net assets100 / 100

Cash100 / 100

Headcount100 / 100

What does RE Projects Development Limited do?

Develops, constructs and operates utility‑scale renewable energy projects, focusing on solar photovoltaic farms, battery energy storage systems (BESS) and flexible generation. Provides project…

Who does RE Projects Development Limited sell to?

Serves UK agricultural landowners seeking farm diversification and energy-sector partners, including EPC providers and infrastructure funds, involved in utility-scale renewable energy and battery…

Key contacts (1)

Simeon Stoyanov Batov

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£1.8MEstimate

Founded

12 years ago

Since Dec 2013

London

Financial health

100

Financial Health

Strong

Strong · Growing, Hiring · 37% CAGR over 4y

GrowingHiring

Location

565 High Road Leytonstone

London, E11 4PB

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PACIFIC GREEN ENERGY STORAGE (UK) LIMITED

Pacific Green

Renewable Energy

Inc. 2019LondonCH 11995390

pacificgreen.com

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Financial sub-scores

Computed from 5 filings

Cash100 / 100

Headcount0 / 100

What does PACIFIC GREEN ENERGY STORAGE (UK) LIMITED do?

Develops and delivers utility‑scale battery energy storage projects and energy parks to support electricity grids and renewable power integration, including project development, financing, and…

Who does PACIFIC GREEN ENERGY STORAGE (UK) LIMITED sell to?

Serves utility-scale energy buyers, grid and renewable power stakeholders, and infrastructure investors seeking battery energy park capacity across Australia, Europe, Asia and the Middle East.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£670.4KEstimate

Founded

7 years ago

Since May 2019

London

Financial health

Financial Health

Stable

Location

Floor 3, 4 Albemarle Street, Albemarle Street

London, W1S 4GA

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Ampyr Energy UK LLP

Ampyr

Renewable Energy

Inc. 2019LondonCH OC430093

ampyrenergy.com

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Financial sub-scores

Computed from 5 filings

Net assets100 / 100

Cash100 / 100

What does Ampyr Energy UK LLP do?

Invests in, develops and operates renewable energy and battery storage projects, including onshore wind and solar installations. Provides asset management, power supply and optimisation services, and…

Who does Ampyr Energy UK LLP sell to?

Targets institutional investors, large power users, landowners, communities and public sector bodies in renewable energy and battery storage markets across Asia, Australia, UK/Europe and the USA.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£766.3KEstimate

Founded

6 years ago

Since Dec 2019

London

Financial health

100

Financial Health

Strong

Location

14b, Tower 42,, 25 Old Broad Street

London, EC2N 1HN

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FPE Energy Storage

Renewable EnergyUtilitiesStartup

5 employeesInc. 2023LondonCH 14884426

fpedevelopments.com

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Financial sub-scores

Computed from 2 filings

Headcount40 / 100

What does FPE Energy Storage do?

Develops and promotes large-scale battery energy storage system (BESS) projects that store electricity generated from renewable sources such as wind and solar. Projects connect to the electricity…

Who does FPE Energy Storage sell to?

Targets energy infrastructure investors and UK electricity grid stakeholders, including network operators and renewable energy participants involved in large-scale storage projects.

Key contacts (1)

Neal Gardner Reid

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£107.1KEstimate

Founded

3 years ago

Since May 2023

London

Financial health

Financial Health

Stable

Stable · 0% CAGR over 1y

Location

Temporis Capital, Wellington House, 125-130, Strand

London, WC2R 0AP

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Elements Green

Renewable Energy

3 employeesInc. 2021LondonCH 13665201

elementsgreen.com

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What does Elements Green do?

Develops utility‑scale solar photovoltaic and battery energy storage projects. Manages project development from site origination and permitting through construction, grid connection, financing, and…

Who does Elements Green sell to?

Serves farmers and landowners with suitable sites for utility-scale solar and battery projects, alongside local communities and energy-sector partners involved in renewable energy development.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£317.9KEstimate

Founded

4 years ago

Since Oct 2021

London

Financial health

—

Financial Health

N/A

Location

1 Half Moon Street

London, W1J 7AY

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Queequeg Enterprises Ltd

Queequeg Renewables

Renewable Energy

Inc. 2018LondonCH 11178935

quren.co

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Financial sub-scores

Computed from 5 filings

Net assets100 / 100

Cash100 / 100

Headcount0 / 100

What does Queequeg Enterprises Ltd do?

Develops, finances and operates large-scale renewable energy projects, including wind farms, solar farms and battery energy storage systems. Manages project development and partners with landowners…

Who does Queequeg Enterprises Ltd sell to?

Serves landowners, farmers and owners of agricultural or brownfield sites seeking long-term partnerships for large-scale wind, solar and battery storage projects across multiple territories.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£355.9KEstimate

Founded

8 years ago

Since Jan 2018

London

Financial health

Financial Health

Healthy

Location

2nd Floor, The Works, 14 Turnham Green Terrace Mews

London, W4 1QU

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Moixa Technology Limited

Moixa

Renewable Energy

73 employeesInc. 2005LondonCH 05631091

moixa.com/solar-battery

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Financial sub-scores

Computed from 3 filings

Net assets0 / 100

Cash25 / 100

Headcount70 / 100

What does Moixa Technology Limited do?

Develops residential energy storage systems and software for managing and sharing electricity. Produces smart home batteries and the GridShare platform, which aggregates household storage into…

Who does Moixa Technology Limited sell to?

Serves a mix of B2C homeowners with home battery or solar setups and B2B energy-sector partners focused on residential flexibility and virtual power plants.

Key contacts (1)

Edward Franklin

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£98.3KEstimate

Founded

20 years ago

Since Nov 2005

London

Financial health

Financial Health

Weak

Weak · Hiring · 11% CAGR over 2y

HiringFinancial distressTechnical insolvency

Location

55 Baker Street

London, W1U 7EU

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Renewable Power Capital

Renewable Energy

2 employeesInc. 2020LondonCH 13066012

renewablepowercapital.com

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What does Renewable Power Capital do?

Develops, constructs, owns and operates renewable energy generation and battery storage projects. Acts as an investment platform financing and managing wind, solar and energy storage assets and…

Who does Renewable Power Capital sell to?

Serves investors seeking returns from renewable energy and storage projects, and works with project partners and local communities across Europe, including the UK, Finland and Italy.

Key contacts (3)

Leigh Partridge

Director

Bianca Farhat Cardoso Ziccarelli

Director

William Bowen Shepheard Rogers

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£335.2KEstimate

Founded

5 years ago

Since Dec 2020

London

Location

Uk House 5th Floor, 164-182 Oxford Street

London, W1D 1NN

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Crewe Sustainable Energy Limited

BasePower

Renewable EnergyUtilities

2 employeesInc. 2023LondonCH 14614493

basepower.com

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Financial sub-scores

Computed from 2 filings

Net assets40 / 100

Headcount40 / 100

What does Crewe Sustainable Energy Limited do?

Develops, finances and operates on-site energy infrastructure including combined heat and power (CHP), solar PV, energy storage, microgrids and heat networks. Provides energy centres and grid-support…

Who does Crewe Sustainable Energy Limited sell to?

Serves UK businesses and property developers, particularly in real estate, logistics, industrial operations, food production and data centres, with customers seeking large-scale energy capacity and…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£0Estimate

Founded

3 years ago

Since Jan 2023

London

Financial health

Financial Health

Stable

Stable · 0% CAGR over 1y

Location

2nd Floor, Regis House, 45 King William Street

London, EC4R 9AN

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LAPWING FEN II LTD.

Tribus

Renewable Energy

2 employeesInc. 2016LondonCH 10448269

tribus.energy

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Financial sub-scores

Computed from 3 filings

Net assets100 / 100

Headcount100 / 100

What does LAPWING FEN II LTD. do?

Develops large-scale renewable energy infrastructure, including solar photovoltaic farms and battery energy storage systems, and works with landowners and investors to plan, finance and deliver…

Who does LAPWING FEN II LTD. sell to?

Serves B2B clean energy investors and landowners with large sites, alongside stakeholders involved in UK large-scale solar and battery storage projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£101.6KEstimate

Founded

9 years ago

Since Oct 2016

London

Financial health

100

Financial Health

Strong

Strong · Hiring · 41% CAGR over 2y

Hiring

Location

7-10 Chandos Street, 5th Floor, North Side, Cavendish Square

London, W1G 9DQ

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DOWNING ENERGY DEVELOPMENT COMPANY LIMITED

Downing Renewable Developments

Renewable EnergyUtilities

Inc. 2020LondonCH 13044362

downing-renewables.co.uk

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Financial sub-scores

Computed from 3 filings

Cash0 / 100

What does DOWNING ENERGY DEVELOPMENT COMPANY LIMITED do?

Develops, constructs and operates renewable energy projects, focusing on solar photovoltaic farms, battery energy storage systems and onshore wind assets. Also works with landowners and…

Who does DOWNING ENERGY DEVELOPMENT COMPANY LIMITED sell to?

Serves UK landowners with sites suitable for renewable energy development and businesses or organisations seeking power purchase agreements linked to solar, storage and onshore wind projects.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£4.9MEstimate

Founded

5 years ago

Since Nov 2020

London

Financial health

Financial Health

Distressed

Financial distressTechnical insolvency

Location

10 Lower Thames Street

London, EC3R 6AF

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Elements Green

Renewable Energy

41 employeesInc. 2022LondonCH 14167850

elementsgreen.com

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Financial sub-scores

Computed from 3 filings

Headcount87 / 100

What does Elements Green do?

Develops utility-scale solar photovoltaic and battery energy storage projects. Manages project lifecycle including site origination, development, financing, construction, grid connection and…

Who does Elements Green sell to?

Serves farmers, landowners and local communities seeking long-term partnerships around utility-scale renewable energy projects, with activity referenced in the UK, EU, Australia and US.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£268.3KEstimate

Founded

4 years ago

Since Jun 2022

London

Financial health

Financial Health

Strong

Strong · Hiring · 17% CAGR over 2y

Hiring

Location

1 Half Moon Street

London, W1J 7AY

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INFRA BALANCE GROUP LTD

Infra Balance New Energy

Renewable EnergyUtilities

1 employeesInc. 2020LondonCH 12552560

ibne.co.uk

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Financial sub-scores

Computed from 5 filings

Net assets40 / 100

Cash0 / 100

What does INFRA BALANCE GROUP LTD do?

Develops and manages flexible power and energy infrastructure projects, including generation and grid‑balancing capacity. Operates a portfolio of advanced power assets intended to support electricity…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£1.3MEstimate

Founded

6 years ago

Since Apr 2020

London

Financial health

Financial Health

Weak

Location

1 Knightsbridge Green, Knightsbridge Green

London, SW1X 7QA

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P3P Partners

Renewable EnergyUtilities

3 employeesInc. 2017LondonCH 10667779

p3ppartners.com

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Financial sub-scores

Computed from 3 filings

Net assets0 / 100

Headcount100 / 100

What does P3P Partners do?

Develops, finances, builds and operates energy and bioenergy projects, including combined heat and power plants, gas peaking, battery storage and solar. Also supplies and trades electricity and gas…

Who does P3P Partners sell to?

Serves horticultural growers, commercial and industrial energy users, landowners with development opportunities, and early-stage sustainable energy or controlled-environment agriculture ventures…

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£22.3KEstimate

Founded

9 years ago

Since Mar 2017

London

Financial health

Financial Health

Weak

Weak · Hiring · 18% CAGR over 2y

HiringFinancial distressTechnical insolvency

Location

58 Marylebone High Street

London, W1U 5HT

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Burnley Bess

Renewable EnergyUtilities

2 employeesInc. 2022LondonCH 14184463

p3ppartners.com

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What does Burnley Bess do?

Develops, finances, builds and operates energy and infrastructure projects, including combined heat and power plants, gas peaking, battery storage and solar. Also supplies and trades electricity and…

Who does Burnley Bess sell to?

Serves horticultural growers and controlled-environment agriculture operators, plus commercial and industrial energy users; also works with landowners, construction funders and joint-venture partners…

Key contacts (2)

Yongjun Lee

Director

Yeongkyu Park

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£26.9KEstimate

Founded

4 years ago

Since Jun 2022

London

Location

Duo, Level 6, 280 Bishopsgate

London, EC2M 4RB

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CRAGSIDE ENERGY LIMITED

Cragside Energy

Renewable Energy

4 employeesInc. 2020LondonCH 13093560

cragside.energy

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Financial sub-scores

Computed from 5 filings

Net assets100 / 100

Headcount100 / 100

What does CRAGSIDE ENERGY LIMITED do?

Develops and manages renewable energy and grid-scale battery energy storage projects. Identifies sites, partners with landowners and investors, and advances projects through development to support…

Who does CRAGSIDE ENERGY LIMITED sell to?

Targets private investors, infrastructure/renewables partners, and landowners in Great Britain involved in grid-scale battery storage and renewable energy project development.

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£597.7KEstimate

Founded

5 years ago

Since Dec 2020

London

Financial health

100

Financial Health

Strong

Strong · Hiring · 19% CAGR over 4y

Hiring

Location

3rd Floor, 22 Old Bond Street

London, W1S 4PY

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Solarig Development UK Ltd

Solarig UK

Renewable Energy

9 employeesInc. 2015LondonCH 09690936

uk.solarig.com

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Financial sub-scores

Computed from 3 filings

Net assets0 / 100

Cash100 / 100

Headcount100 / 100

What does Solarig Development UK Ltd do?

Develops, builds, and operates large-scale photovoltaic solar power plants and energy storage systems. Provides project development, engineering, construction support, and operational services for…

Who does Solarig Development UK Ltd sell to?

Serves UK landowners and energy-sector organisations involved in large-scale solar, wind-solar and battery storage projects, including partners and stakeholders in renewable electricity…

Key contacts (1)

Raquel Bonafonte Gomez

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£2.4MEstimate

Founded

11 years ago

Since Jul 2015

London

Financial health

Financial Health

Stable

Stable · Hiring · 200% CAGR over 2y

HiringFinancial distressTechnical insolvency

Location

4th Floor, Butler House, 177-178 Tottenham Court Road

London, W1T 7NY

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RENEWABLE CONNECTIONS DEVELOPMENTS LIMITED

Renewable Connections

Renewable Energy

29 employeesInc. 2019Norwich, NorfolkCH 12351905

renewableconnections.co.uk

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Financial sub-scores

Computed from 5 filings

Net assets0 / 100

Cash100 / 100

Headcount100 / 100

What does RENEWABLE CONNECTIONS DEVELOPMENTS LIMITED do?

Develops utility-scale renewable energy projects, focusing on solar farms and battery energy storage systems. Provides project development, partner coordination and asset management across the…

Who does RENEWABLE CONNECTIONS DEVELOPMENTS LIMITED sell to?

Serves UK commercial energy users, landowners, and renewable energy asset owners or investors involved in solar, battery storage, business energy, and asset management projects.

Key contacts (1)

Andrew Charles Newman Newman

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£2.9MEstimate

Founded

6 years ago

Since Dec 2019

Norwich, Norfolk

Financial health

Financial Health

Stable

Stable · Hiring · 27% CAGR over 4y

HiringFinancial distressTechnical insolvency

Location

20 Central Avenue, St. Andrews Business Park

Norwich, Norfolk, NR7 0HR

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VEST BM LIMITED

VEST Energy

Renewable Energy

Inc. 2017LondonCH 10583533

vest.energy

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Financial sub-scores

Computed from 3 filings

Headcount0 / 100

What does VEST BM LIMITED do?

Provides battery energy storage solutions for businesses and energy projects, including system design, revenue forecasting, and support through procurement and installation. Helps organisations store…

Who does VEST BM LIMITED sell to?

Serves businesses and energy users seeking behind-the-meter battery storage, including manufacturing, chemical processing and mineral sites, plus communities and organisations with on-site renewables…

Key contacts (1)

Aaron Janjit Singh Lally

Director

Full details & directors in the file

Company vitals

UK Headcount

UK Revenue

£37.8KEstimate

Founded

9 years ago

Since Jan 2017

London

Financial health

Financial Health

Distressed

Financial distress

Location

245 Hammersmith Road

London, W6 8PW

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How London Battery Storage companies work and how to sell to them

What they do

Revenue usually comes from a mix of development fees, asset returns, optimisation income, management charges and advisory work. Asset owners earn through contracted capacity, flexibility and wholesale-market routes, while developers may sell shovel-ready projects or retain an operating stake. Optimisation specialists tend to price through revenue-share, fixed retainers or performance-linked fees tied to dispatch and trading outcomes. Financing-led firms earn arrangement, structuring or management fees around storage assets. The product is rarely just software or hardware; it is usually a project wrapper combining engineering evidence, grid access, commercial modelling, operating processes and long-term accountability for asset performance.

Who they sell to

Customers are typically commercial energy users, industrial sites, utilities, infrastructure investors and developers with storage or flexibility requirements. The buying group often includes a CFO or investment committee, an energy director, grid-connection specialists, procurement, legal counsel and operations teams that will inherit the asset. Contracts tend to be large enough to require diligence on technical yield, degradation, planning risk, counterparty exposure and route-to-market assumptions. Sales are usually direct or adviser-led, with formal tenders where the buyer is procuring development, financing or operating capability. Cycles often run for months rather than weeks because land, connection and financing dependencies have to line up.

What they buy

Most London battery storage firms tend to spend on project finance support, legal work, technical due diligence, grid-connection advice, insurance, accounting and specialist recruitment. Operating teams also buy asset monitoring, forecasting, scheduling, trading, risk management, cyber security, metering, data infrastructure and reporting tools. Earlier-stage developers often need CRM, pipeline management, document control, mapping, financial modelling and investor reporting rather than large internal systems. Firms moving from development into ownership usually add procurement, contract management, health and safety processes, maintenance partners and controls for revenue assurance. Sellers should expect technical and finance stakeholders to test claims against asset economics rather than general productivity language.

Why and how to sell to them

Buying intent tends to surface when a firm secures site rights, receives a grid-connection offer, raises project capital, hires operations or trading staff, or moves from advisory-heavy work into asset ownership. Common pressure points include connection delays, revenue volatility, battery degradation assumptions, insurance scrutiny, lender reporting, metering accuracy and the need to coordinate engineers, traders and financiers. Outbound works better when it is tied to a concrete project event or operating risk. Pitches should quantify how the offer reduces diligence time, protects revenue, improves control of project documents, shortens handover from development to operations, or gives management a clearer view of asset and counterparty exposure.

How this list is built

Methodology

Data sources

This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.

Classification

Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.

Freshness

The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.

Sources

July 2024: Battery energy storage research round-up
- 141 individual battery units make up 4.1 GW of battery energy storage capacity currently operating in Great Britain.
- Q2 2024 saw 186 MW of new battery energy storage capacity begin commercial operations in Great Britain.
- The first half of 2024 added 370 MW of new operational battery energy storage capacity, the lowest since 2022.
- 1.4 GW of non-operational sites hold Capacity Market contracts for 2024/25, with 1.1 GW expected operational in Q3 2024.
- In the most optimistic case, operational battery energy storage capacity would reach 5.2 GW at the end of 2024, 1.5 GW below pipeline capacity.

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Frequently asked questions

How many battery storage companies are there in London?

Around 185 actively-trading battery storage companies are registered in London. Of those, 13 report turnover above £5M in their most recent filed accounts. This London list covers companies across the wider London travel-to-work area, including surrounding towns — not just the London local-authority boundary.

What counts as a battery storage company in this list?

A company is included when its public website and filed activity descriptions indicate it sells battery storage products or services as its primary business — not just because of the SIC code it picked at incorporation. Each company is tagged via semantic analysis of its website content; SIC codes are used as supporting signal, not the sole gate.

Which are the largest battery storage companies in London?

The list is ranked by a sales-readiness score — built from trading signals, financial health and growth rather than raw turnover — so the most actionable battery storage companies in London appear at the top of the table. Larger firms often still rank highly, because that score rewards genuine trading scale, but the order reflects sales-readiness, not turnover alone. About 13 of the 185 actively-trading firms report turnover above £5M in their most recent accounts; subsidiaries that file consolidated worldwide accounts are excluded so the figures stay comparable across UK filers.

What do battery storage companies in London actually do?

How does London battery storage compare internationally?

Cross-border comparisons of battery storage populations are tricky because every country defines the sector slightly differently and reports financials on different cadences. We focus this list on firms that file UK statutory accounts so the figures are comparable; international peer breakdowns aren't bundled here.

How is this list built and how fresh is the data?

The list is rebuilt from Companies House dump data, XBRL filings, and a website analysis pass over each company's public site. Companies with consolidated group accounts (worldwide rather than UK-only revenue) are excluded so the figures stay UK-specific. The page's last-updated date is shown at the top.

How big are the typical battery storage companies in London?

Company sizes in this list vary widely. The median actively-trading battery storage firm employs around 2 people, and median UK turnover across the list is roughly £133k in the most recent filed accounts.

Are these mostly new or established battery storage companies?

40 of the 185 actively-trading battery storage companies in this list were incorporated since 2022; the remainder were incorporated before then, so the London list mixes recent entrants with longer-established firms.

What SIC codes does this use?

Rather than relying solely on SIC codes, we build a semantic understanding of what each company actually does by scraping its website and analysing it with AI. This means a company is included based on what it sells, not what SIC code it picked at incorporation. SIC codes are used as a signal but not the primary classification.

What buying signals should I look for?

The strongest signals for B2B outbound are recent leadership changes (new CFO/CRO), rapid headcount growth, revenue-band changes, and web-stack changes. Firmbase tracks all of these automatically.

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