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Renewables Companies in Middlesbrough: 29 Active Firms (2026)
Renewables companies around Middlesbrough develop, own or support low-carbon power generation, storage and energy-market infrastructure.
Buying activity around Teesside tends to sit in three centres: asset ownership and power sales, engineering or asset-management services, and grid-connection or compliance work. Customers are usually industrial sites, commercial landlords, public-sector estates or wholesale power counterparties rather than consumers. Engagements therefore look less like short software subscriptions and more like asset-backed contracts, specialist maintenance retainers, metering work, consultancy around licence obligations, or power offtake arrangements. The better-fit operators have measurable UK revenue and lean teams, with project finance and subcontracted delivery often doing part of the operational heavy lifting.
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Around Middlesbrough, 29 renewables companies are actively trading. The cohort is small enough for individual project awards, grid constraints and industrial demand on Teesside to matter more than national averages. Reported headcount totals 276 people, which points to a specialist employment base rather than a broad volume-employment sector. Commercial maturity is uneven: 8 companies report turnover above £5M, while 6 were incorporated since 2022. That mix suggests a market with some established asset or services operators, plus a more recent layer of project vehicles and engineering-led entrants.
Renewable-energy operators that generate, move or supply energy in Great Britain sit within Ofgem’s licensing framework. Once licensed, they must comply with standard licence conditions and any special conditions attached to their activity. Legacy support schemes still shape compliance workloads: the Renewables Obligation is closed to new generating capacity, but accredited stations remain subject to audit checks and must submit generation information for certificates. For Middlesbrough-area firms, that makes regulatory administration part of the operating model, particularly where asset ownership, grid connection, metering and wholesale-market participation sit alongside engineering delivery.
The local renewables market appears likely to remain project-led rather than densely populated by high-headcount operators. Asset-heavy structures tend to keep payrolls lean, while specialist engineering and compliance work can support recurring revenue without creating large teams. Industrial demand around Teesside should continue to shape the buyer base, especially where energy cost, grid access and decarbonisation requirements meet. The main constraint is likely to be execution capacity: planning, connection, licensing and long contract cycles can slow conversion from project pipeline to operating revenue. Consolidation also looks plausible where smaller project vehicles need capital, compliance cover or route-to-market support.
29
Active firms
2026
8
Above £5M turnover
within the local cohort
6
Incorporated since 2022
recent company formations
Key facts
About 27% of the trading cohort reports turnover above £5M (8 of 29 firms) — the rest sits below that revenue band.
20% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Ofgem licensing applies to businesses generating, moving or supplying energy in Great Britain, with standard and any special licence conditions once granted.
Older accredited renewable stations can remain within Renewables Obligation audit, compliance and generation-reporting requirements, although the scheme is closed to all new generating capacity.
UK renewables generated 50.8% of electricity in 2024, up from 46.4% in 2023, with output reaching 144.7 TWh.
Wind supplied 29.5% of UK electricity in 2024, split between 17.2% offshore wind and 12.3% onshore wind.
The IEA’s Renewables 2024 outlook says annual renewable capacity additions rise from 666 GW in 2024 to almost 935 GW in 2030, with solar PV and wind forecast to account for 95% of additions.
Top Middlesbrough Renewables companies
RTS Wind Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides technical services to onshore and offshore wind farms, including turbine blade inspection, repair and maintenance, high‑voltage works, balance‑of‑plant support, installation, operations and…
Serves B2B customers in the onshore and offshore wind energy sector, including wind farm owners, operators, utilities, developers and contractors needing technical support across global wind projects.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
Marshall Jakeman Marine Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOwns and operates survey and dive support vessels for charter to offshore wind and marine survey projects. Provides platforms for hydrographic, geophysical and inspection work, with onboard…
Serves B2B clients in the UK and European offshore wind and renewable energy sectors, including survey providers, geophysics firms, marine contractors and organisations needing offshore project…
Financial Health
StableStable
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides project lifecycle management software and engineering consultancy for complex energy and infrastructure projects. Offers the Navitas digital platform for asset and project management, plus…
Serves B2B clients developing and operating major energy infrastructure, including oil and gas, petrochemical, wind, energy-from-waste, CCUS and offshore transmission projects, especially…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Intelect Mechanical Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering services for process industries including utilities, food and renewable energy. Offers design, fabrication, electrical and mechanical engineering, control and automation,…
Serves B2B industrial clients in process industries, including food and beverage producers, water and power utilities, renewable energy operators, and heavy industry companies.
Financial Health
StableStable · -6% CAGR over 2y
Location
SIRIUS (NE) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consulting and contracting services for land development, including demolition, earthworks, site remediation, drilling, and civil engineering. Also delivers geotechnical and environmental…
Serves UK development teams and organisations in the residential, commercial, renewable energy, waste and minerals sectors, especially those developing brownfield or greenfield land.
Financial Health
StrongStrong · 0% CAGR over 3y
Location
Intek Electrical Engineering Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical engineering services including design, installation, commissioning and maintenance for industrial projects. Delivers turnkey engineering solutions with structural fabrication and…
Serves B2B industrial clients across the UK and Ireland, including mining, petrochemical, renewable energy, oil and gas, process, alternative energy, and material handling operators.
Financial Health
WeakWeak · Hiring · 20% CAGR over 2y
Location
Engineering Power Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical engineering consultancy for energy and industrial projects, including power system studies, HV and LV design, grid connection and compliance assessments, earthing modelling, arc…
Serves B2B clients in the UK energy and industrial sectors, including renewable energy developers, grid and transmission operators, BESS and data centre projects, utilities, manufacturers,…
Financial Health
StrongStrong · Growing, Hiring · 52% CAGR over 4y
Location
ENCORA ENERGY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy and project services for energy infrastructure projects, supporting development, construction and operation of assets including battery energy storage systems, solar PV,…
Serves energy project owners, developers, investors and end users involved in battery storage, solar PV, gas generation, CHP and hydrogen projects.
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 4y
Location
Alps Electrical Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsInstalls solar PV systems, battery storage and Tesla Powerwall units, and EV charging points. Provides domestic and commercial electrical services including EICR testing, consumer unit upgrades,…
Serves homeowners, businesses, schools and farms in Teesside, the North East, North Yorkshire and Yorkshire seeking solar, battery storage, EV charging and electrical services.
Financial Health
StrongStrong · Hiring · 58% CAGR over 2y
Location
Primo Marine UK Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides engineering and technical advisory services for subsea power cable and pipeline infrastructure projects. Supports offshore energy developments including interconnectors, export cable systems…
Serves energy infrastructure developers, utilities, transmission operators and offshore renewable project owners involved in subsea power cables, interconnectors, offshore wind, hydrogen, CO2…
Financial Health
HealthyHealthy · Hiring · 82% CAGR over 4y
Location
Able
Develops and operates port facilities supporting offshore wind projects, including marshalling, assembly and operations bases. Provides marine decommissioning and recycling of offshore structures,…
Serves large industrial and infrastructure customers, including offshore wind developers, marine recycling and decommissioning operators, renewable energy projects, data centre developers, and firms…
Location
Ellesfield Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides high‑voltage (HV) and extra‑high‑voltage (EHV) substation commissioning services for transmission, distribution and renewable energy projects. Supplies commissioning engineers and…
Serves B2B clients in electricity transmission, distribution and renewable energy, including utilities, grid operators, OEMs and engineering contractors delivering HV and EHV substation projects in…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Solar Style Distributions Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides solar energy systems for residential and commercial use, including solar PV panel installation, inverters, battery storage, and system optimisation. Also offers project support and financing…
Serves a mix of B2C and B2B customers: UK homeowners, businesses, commercial property owners and solar farm operators seeking solar energy solutions.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
Location
Northern Renewable Centre Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsSupplies and installs renewable energy and heating systems for homes and businesses, including solar PV panels, air source heat pumps, battery storage systems, EV charging points, infrared radiators,…
Serves a mix of homeowners and commercial organisations, including households, businesses with heating or battery storage needs, and sites requiring EV charging infrastructure such as workplaces or…
Financial Health
StableStable · Hiring · 34% CAGR over 2y
Location
Heerema
Provides offshore engineering and marine contracting services for the energy industry, including transportation, installation and removal of offshore platforms and structures, fabrication of offshore…
Serves B2B customers in offshore energy, including offshore wind developers, renewable project owners, oil and gas operators, and offshore infrastructure owners.
Location
ETERNAL ENERGY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls and maintains solar photovoltaic (PV) systems and provides electrical contracting services. Activities include solar PV design and installation, system maintenance, electric vehicle charger…
Serves households and organisations in the North East and Yorkshire needing solar PV, EV charging, electrical installation, inspection, testing or maintenance support.
Financial Health
StrongStrong · Growing, Hiring · 2% CAGR over 4y
Location
INTEROCEAN PERSONNEL SERVICES (UK) LIMITED
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides marine engineering, consultancy and inspection services for offshore oil and gas, maritime and renewable energy projects. Activities include marine warranty, survey and subsea work, UAV…
Serves B2B clients in offshore oil and gas, marine, and renewable energy sectors, including offshore wind developers, asset owners and operators across project development, construction, operations,…
Financial Health
DistressedDistressed · -12% CAGR over 3y
Location
Delta Fabs Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides fabrication and engineering services for offshore energy, marine and infrastructure sectors, including vessel mobilisation and demobilisation, heavy steel fabrications, subsea structures,…
Serves B2B asset owners, vessel operators and contractors in offshore energy, oil and gas, renewables, marine, subsea, decommissioning, power, infrastructure, telecoms and utilities.
Financial Health
StrongStrong
Location
Bespoke Solutions(NE) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsInstalls solar photovoltaic panel systems and battery storage for residential and commercial properties. Provides consultation, system design and installation to enable on-site renewable electricity…
Serves homeowners seeking domestic solar, battery storage, windows and doors, as well as businesses and commercial property owners considering commercial solar energy options.
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
ABLE SHIP RECYCLING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates port facilities providing marine recycling and decommissioning of ships and offshore structures. Supports offshore wind projects with marshalling yards, assembly and maintenance facilities,…
Serves B2B customers in energy, marine and industrial infrastructure, including offshore wind developers/operators, vessel and offshore asset owners, renewable energy firms, AI data centre developers…
Financial Health
StableStable
Location
STEEL RIVER QUAY LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsOperates a deep-water quay and port facility supporting offshore wind projects, providing berthing for large installation vessels, heavy‑lift handling areas, and laydown and storage space for…
Serves offshore wind developers, installation contractors and vessel operators needing deep-water port access, heavy-lift quayside capacity, laydown space and storage for large turbine components.
Financial Health
WeakWeak · Hiring · 50% CAGR over 1y
Location
SIRONA SUBSEA LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns and engineers subsea equipment for offshore oil, gas and renewable energy projects. Develops sealing, clamping and cable protection systems, pipeline plugs and ROV‑installable hardware, and…
Serves B2B clients in the offshore energy sector, including oil, gas and renewables companies, Tier 1 contractors, pipeline operators, and umbilical/cable manufacturers.
Financial Health
StrongStrong · Growing, Hiring · 117% CAGR over 1y
Location
Marshall & McCourt Plumbing & Heating Contractors Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs renewable energy and heating systems for residential and commercial properties, including air and ground source heat pumps, solar PV, battery storage, EV charging, underfloor…
Serves homeowners, commercial property owners and new-build developers across the North East and Yorkshire seeking sustainable energy and heating upgrades.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 5y
Location
Springwell Electrical Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsInstalls solar photovoltaic systems, battery storage units and electric vehicle charging points for homes. Provides design and installation of renewable energy systems, including solar panels,…
Serves homeowners and some businesses across Hartlepool, Teesside, Durham, Newcastle and the North East seeking solar PV, battery storage and EV charger installations.
Financial Health
HealthyHealthy · Hiring · 73% CAGR over 2y
Location
IWE Electrical Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and building services including electrical design and installation, lighting and distribution networks, fire alarms and emergency lighting, CCTV and security systems, data…
Sells to industrial, commercial and domestic customers, including construction firms, housing providers, facilities contractors and homeowners. Serves businesses and consumers needing electrical,…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
Location
D.J.R. SMITH LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for domestic, commercial and new-build projects, including electrical installations, data cabling, TV and satellite systems, and renewable energy systems such…
Targets homeowners seeking greener homes, commercial property owners, and housebuilders/developers delivering new-build projects across Teesside, Yorkshire and the North East.
Financial Health
HealthyHealthy · -91% CAGR over 2y
Location
Wired Up (NE) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for domestic and commercial clients, including electrical installations, rewiring, fuse board upgrades, CCTV and access control systems, fire and intruder…
Serves homeowners, landlords and commercial organisations across the North East, including retail, industrial and property-management customers needing electrical, security, renewable energy and…
Financial Health
StableStable · 0% CAGR over 2y
Location
Well Wired Electrical Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides domestic, commercial and industrial electrical services including installation, maintenance and repairs. Also installs CCTV, alarm and door entry systems, electric gates, emergency and LED…
Serves homeowners, commercial businesses and industrial clients in Darlington and across the North East, including organisations needing electrical, security, EV charging, lighting, network or solar…
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
ECO POWER ENERGY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsSupplies and installs electric vehicle charging systems for homes, workplaces, fleets, and public locations. Provides EV charger maintenance and repair, workplace charging installations with funding…
Serves UK homeowners and commercial clients, including fleet operators, workplaces, factories, offices, garages, retail premises, hospitality venues and sites needing public EV charging.
Financial Health
StrongStrong · Growing, Hiring · 52% CAGR over 5y
Location
WILTON ENGINEERING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides fabrication, engineering design and project commissioning services for marine, offshore and subsea industries. Delivers turnkey fabrication projects and supports sectors including oil and…
Serves B2B and public-sector customers in marine, offshore and subsea markets, including defence, oil and gas, renewables and decommissioning project owners, operators and contractors.
Financial Health
HealthyHealthy · -56% CAGR over 4y
Location
Energise Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides installation of smart electricity meters and electrical isolator switches for residential and commercial properties. Offers safe isolation services supporting EV charger, solar, and…
Serves a mix of UK consumers and B2B customers, including homeowners, businesses, solar companies and electricians, with nationwide coverage emphasised.
Financial Health
DistressedDistressed
Location
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How Middlesbrough Renewables companies work and how to sell to them
What they do
Revenue usually comes from long-cycle projects rather than short purchase decisions. Asset owners earn through power sales, offtake agreements and associated support-scheme administration; services firms charge for engineering, asset management, metering, grid-connection work and compliance support. Pricing typically mixes fixed project fees, day-rate technical work, maintenance retainers and pass-through costs for specialist contractors or equipment. Contracts can be tied to commissioning milestones, availability targets or evidence needed for licensing and certificate claims. The operating shape is therefore part infrastructure, part professional services: lean internal teams coordinate finance, subcontractors, technical documentation and customer reporting around assets that have to keep producing.
Who they sell to
Customers are usually industrial energy users, commercial landlords, public-sector estates, grid-facing counterparties and wholesale power buyers. The buying group tends to include energy managers, estates directors, operations leads, finance directors and procurement teams, with legal or technical advisers pulled in once risk allocation becomes material. Smaller service engagements may start through direct relationships, but asset-backed work more often moves through formal tender, framework, partner referral or project-finance diligence. Sales cycles commonly run for months because the buyer needs to align budget, site access, grid constraints, planning assumptions and internal carbon or cost-reduction targets before signing.
What they buy
Most Middlesbrough renewables firms tend to spend on systems and services that keep projects auditable, billable and operational. Common software categories include asset-management platforms, field-service scheduling, metering data management, finance systems, CRM, contract management, health and safety tooling, cyber security, document control and analytics for output, availability and margin. Services spend is often just as relevant: grid studies, planning support, legal work, project accounting, insurance advice, recruitment for engineers or commercial roles, and outsourced marketing for public-sector or industrial bids. Infrastructure sellers may find demand around cloud hosting, data integration, site connectivity, monitoring hardware and secure access for subcontractors.
Why and how to sell to them
Buying intent often appears when a project moves from development into delivery, when an operator wins a new maintenance remit, or when revenue starts to depend on uptime and evidence rather than consultancy hours. Other triggers include project finance, a new finance or operations lead, subcontractor growth, licence activity, audit pressure, customer tenders and grid-connection milestones. The useful outbound angle is usually specific and operational: reduce downtime, shorten certificate and billing admin, improve project-margin visibility, control contractor risk, or prepare bid evidence for industrial and public-sector buyers. Generic decarbonisation messaging tends to land less well than proof that a vendor understands asset-backed cash flow.
How this list is built
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.
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