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Solar Installation Companies in Bristol: 26 Active Firms (2026)
Solar installation companies design and fit photovoltaic and battery systems for homes, landlords and commercial sites across Bristol's metro area.
Buying centres tend to sit with property owners, facilities teams, finance directors and electrical contractors, rather than with a dedicated energy buyer. Residential work is usually owner-occupier or landlord led, while commercial and public-sector jobs pass through estates, maintenance and procurement teams. Engagements are project-based, with site survey, yield modelling, roof or electrical assessment, installation, handover and aftercare bundled into the works package. The relevant suppliers for this page look like local building-services contractors with renewable-energy capability, not pure consultants, equipment distributors or national utilities.
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Bristol has 26 actively trading solar installation companies in this list, a small contractor base rather than a deep national hub. Reported employment totals 289 people, which points to a labour footprint concentrated in installation teams, surveyors, electricians and back-office quoting rather than large manufacturing operations. Turnover scale is also narrow: 3 companies report more than £5M, so most of the cohort appears to sit below mid-market revenue scale. For researchers, that makes the Bristol picture useful as a local delivery market, not as a proxy for national solar supply-chain depth.
Installers operate where planning, building-control, electrical-safety and consumer-credit obligations meet local property work. Domestic roof projects tend to be sold on payback and disruption risk, while landlord, commercial and public-sector work brings more formal procurement, proof of competency, insurance checks and post-installation documentation. Market structure is therefore partly shaped by accreditation, grid-connection administration and the availability of qualified electricians. That favours contractors able to manage site work and paperwork together, and leaves less room for sales-only intermediaries once projects move beyond straightforward domestic roofs.
Demand appears tied to retrofit economics rather than a discrete technology cycle. Battery attachment, energy-price sensitivity and electrification of heat tend to pull installers towards broader low-carbon contracting, but the Bristol cohort still looks contractor-led and relatively local. Scale-up scarcity may persist where labour availability, roof-by-roof project management and working-capital needs limit how far installers can standardise delivery. Consolidation is more likely to come through adjacent electrical and building-services groups adding solar capability than through a wave of venture-backed entrants.
26
Active firms
2026
3
Above £5M
Revenue threshold
0
Recent incorporations
Since 2022
Key facts
About 11% of the trading cohort reports turnover above £5M (3 of 26 firms) — the rest sits below that revenue band.
Bristol solar installers sit between household property work, landlord retrofit budgets and commercial facilities procurement.
The local supplier base includes electrical contractors as well as installation-led businesses handling multi-site commercial work.
Photovoltaic and battery projects tend to combine system design, site survey, fitting and aftercare rather than product resale alone.
Top Bristol solar installation companies
Sunlight Future Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs renewable energy systems for homes and businesses, including solar photovoltaic panels, battery storage, heat pumps, EV charging points, and solar carports. Provides system…
Serves homeowners, landlords and commercial property owners in Bristol and the South West, including workplaces needing renewable energy, battery storage, heat pump and EV charging installations.
Financial Health
StableStable · Hiring · 26% CAGR over 4y
Location
Ecocetera Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls solar photovoltaic (PV) panel systems for residential, commercial and community buildings. Supplies and fits battery storage and related equipment, and provides maintenance, servicing,…
Serves homeowners, businesses and community organisations in Bristol and the surrounding South West, including village halls, churches, sports clubs, charities and co-operatives.
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 5y
Location
SWITCHED LIVE ELECTRICAL LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides commercial and industrial electrical contracting services including planned and reactive maintenance, electrical installations, inspection and testing, and renewable energy systems such as…
Serves B2B and public-sector premises across South West England and South Wales, including commercial property operators, schools, data centres and industrial facilities.
Financial Health
HealthyHealthy · Hiring · 46% CAGR over 3y
Location
Bounty Energy Solutions And Technologies Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns, installs, and maintains renewable energy systems for commercial properties, including solar PV, battery storage, and heat pumps. Provides project management from system design and…
Serves commercial and public-sector organisations with site-specific renewable energy needs, including sports complexes, fire stations and other facilities requiring compliant design, installation…
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
Roland J. Bell Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including installation, testing and maintenance for domestic, commercial and industrial properties. Services include house rewiring, consumer unit upgrades,…
Serves homeowners, landlords, home buyers, and businesses in commercial and industrial settings. Also targets offices and schools needing electrical work, safety testing, lighting upgrades, EV…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
SVE Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides building services including electrical installations, data and telephony cabling, lighting, fire and security systems, EV charging points, and solar PV systems. Also delivers building…
Serves commercial and domestic property customers, including workplaces, industrial sites, education providers, railway-sector organisations, new housing developers and homeowners across the UK.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 3y
Location
ECO HOME UK GROUP LTD
Trajectory
5y · 2022–NowProvides energy-efficiency upgrades for residential and commercial buildings, including cavity, loft, wall and underfloor insulation installation, cavity wall extraction, air source heat pumps and…
Serves a mix of homeowners, landlords and commercial project clients seeking energy-efficiency improvements, including property owners concerned with insulation, EPC ratings, comfort and energy costs.
Financial Health
Insufficient historyInsufficient history
Location
Hanham Heating Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls and services central heating systems including gas, LPG, oil and electric boilers. Provides boiler replacements, underfloor and solar heating, plumbing services, bathroom design and…
Serves homeowners and residential landlords in the Bristol and Bath area seeking heating, plumbing, bathroom, fireplace and boiler-related support.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
POWER GUARD INTERNATIONAL (UK) LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and supplies off‑grid and grid‑backed hybrid power systems combining solar, batteries and generators. Provides central battery systems for emergency lighting, UPS equipment, inverters,…
Serves UK homeowners, businesses and public-sector organisations needing off-grid, hybrid or backup power, including commercial, manufacturing, retail, agriculture, entertainment, GLAM, aviation,…
Financial Health
StableStable
Location
Eco Green Partners Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides design, supply, installation and commissioning of renewable energy systems including solar PV panels, battery storage, air source heat pumps and EV charging units, offering MCS-certified…
Serves homeowners, commercial and industrial clients seeking renewable energy systems, plus heat pump installers needing MCS design/certification and BUS grant access, mainly around North Somerset…
Financial Health
StableStable · 0% CAGR over 4y
Location
Green Flare Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs renewable energy systems for residential and commercial properties, including solar PV panels, heat pumps, underfloor heating, and battery storage. Provides system design,…
Sells to homeowners and commercial property owners seeking renewable energy systems, particularly solar, heat pumps, battery storage and underfloor heating. Serves residential and commercial…
Financial Health
HealthyHealthy · Hiring · 30% CAGR over 5y
Location
Mjp Electrical Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial electrical services including emergency call-outs, electrical installation condition reports (EICRs), consumer unit replacements, house rewiring, LED upgrades, EV…
Serves homeowners, landlords, homebuyers and commercial businesses in Bristol and Bath needing domestic, workplace and compliance-related electrical support, including emergency call-outs.
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
TRIMBY ELECTRICAL SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services for domestic and commercial properties, including installations, maintenance and repairs, electrical testing and inspection, lighting and fire alarm systems,…
Serves homeowners, business owners, local authorities, hospitals, schools, letting agents and property management agencies across Bristol and the South West, including owners of listed, historic and…
Financial Health
StableStable · -8% CAGR over 4y
Location
MJ Electrical and Renewables Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and renewable energy installation services, including domestic and commercial solar PV systems, battery storage, electric vehicle charge points, LED lighting, and general…
Serves homeowners, property owners and commercial organisations across the South West, including larger UK companies, seeking renewable energy and electrical project support.
Financial Health
StableStable · 0% CAGR over 4y
Location
BPM CONTRACTING SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property maintenance and building services including electrical, plumbing, heating, carpentry and general repairs. Installs solar panels, air source heat pumps and battery storage, and…
Serves housing associations, local authorities, healthcare providers, MOD sites, schools and universities, plus domestic customers across the South West.
Financial Health
HealthyHealthy · -66% CAGR over 4y
Location
SWIFT MECHANICAL GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and installs renewable energy and climate control systems, including air source heat pumps, solar photovoltaic panels, battery storage systems, and air conditioning for residential…
Serves homeowners, small businesses, builders and contractors needing renewable energy systems across North Somerset, the South West and South Wales, including new-build projects, offices and…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
PRO-TECH ELECTRICAL (BRISTOL) LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for domestic, commercial and industrial properties, including full and partial rewires, EV charging point installation, landlord electrical safety inspections…
Serves homeowners, landlords, property management companies, and commercial or industrial businesses across the South West, including customers within 50 miles of Bristol.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
Rygol Electrical Services Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services for residential and commercial properties, including electrical installations, rewiring, consumer unit upgrades, inspections and repairs, as well as…
Serves homeowners, commercial property owners and businesses in Bristol and the South West with residential and commercial premises.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
John Bastin & Sons Electrical Ltd
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides electrical contracting services including installation, maintenance, and fault repairs for residential, commercial, agricultural, and industrial properties. Also installs solar panels, LED…
Serves homeowners and B2B clients in and around Bristol, including commercial premises, industrial operators, farms, schools, housing developers and healthcare organisations.
Financial Health
StrongStrong · Hiring · 11% CAGR over 3y
Location
Solarsense (UK) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns, installs and maintains renewable energy systems including solar panels, battery storage, solar carports and EV charging infrastructure. Provides solar energy solutions for commercial and…
Serves commercial organisations across sectors, including UK brands, manufacturers and schools, as well as homeowners and new-build property customers seeking residential renewable energy systems.
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 2y
Location
D.M.K. Electrical Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsInstalls solar photovoltaic (PV) systems, battery storage and electric vehicle charging points for residential and commercial properties. Provides design, supply and installation of renewable energy…
Serves homeowners and businesses in the Weston-super-Mare area, including domestic property owners and commercial premises looking to reduce energy costs or support electric vehicle use.
Financial Health
StableStable · Growing · 0% CAGR over 5y
Location
Sustain Heating & Renewables Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsInstalls and services renewable and electric heating and energy systems for residential and commercial properties, including air source heat pumps, solar PV panels, battery storage, EV charging…
Serves homeowners and business owners in the South of England looking to switch to renewable energy, with some services also addressing commercial customers and EV charger users across the UK.
Financial Health
WeakWeak · Hiring · 3% CAGR over 3y
Location
PRW ELECTRICAL SERVICES (SOUTH WEST) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial electrical services including installations, testing and inspections, repairs, rewiring, fuse board upgrades, and maintenance. Also installs EV chargers, solar…
Serves homeowners and commercial organisations, including property owners, workplaces and contracting project clients across Bristol, Weston-super-Mare, Clevedon, Portishead and nearby Somerset areas.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
Electrio Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides electrical contracting services including design, supply, installation and maintenance of electrical systems for commercial, industrial, retail and healthcare projects. Also installs LED…
Serves commercial, industrial, retail, healthcare, food processing, manufacturing, warehouse and new-build clients across the South West, including estates departments outsourcing electrical…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
Brightside Electrical Contractors Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides residential and commercial electrical contracting, including wiring for new builds and renovations, service upgrades, lighting and power installations, tenant improvements, and installation…
Serves homeowners undertaking renovations, new builds or efficiency upgrades, and commercial operators or tenants in restaurants, salons, warehouses and gyms with fit-out or improvement projects.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
Trilec Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical and building contracting services including electrical installation and testing, fibre and copper data cabling, CCTV and alarm systems, EV charging and solar installations, HVAC…
Serves residential homeowners, commercial property owners and occupiers, industrial sites, and organisations needing building services, electrical works, security systems, data infrastructure, HVAC,…
Financial Health
HealthyHealthy · Hiring · 40% CAGR over 4y
Location
Solitaire Electrical Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical contracting services including system design with CAD, installation, repair and maintenance. Offers EV charger and solar PV installations, fixed wiring testing, fire alarms, CCTV,…
Serves B2B and institutional clients, including healthcare facilities, commercial premises, technology companies and organisations needing electrical works, testing, maintenance, energy, security,…
Financial Health
StableStable · 0% CAGR over 4y
Location
NOAD ROOFING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential roofing services including installation and repair of tile and slate roofs, flat roofs, and leadwork. Also installs roof windows and skylights, gutters, fascias and soffits,…
Serves homeowners and private property owners in Bath, plus other local property customers seeking roofing quotations, inspections, repairs and exterior roofline work.
Financial Health
StableStable · -11% CAGR over 4y
Location
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How Bristol solar installation companies work and how to sell to them
What they do
Bristol solar installation contractors earn revenue from project work rather than recurring software-style subscriptions. Domestic jobs are usually fixed-price quotes for roof-mounted photovoltaic systems, sometimes with battery storage, electrical upgrades and monitoring included. Landlord, commercial and public-sector projects look more like building-services packages: survey, design, procurement of kit, scaffolding coordination, installation, certification, grid-connection administration and aftercare. Margins depend on labour utilisation, supplier terms and how accurately the contractor prices roof complexity, electrical remedial work and access. A smaller recurring stream can come from maintenance visits, inverter replacement, battery add-ons and warranty handling.
Who they sell to
Most sell to a mixed buyer base: homeowners, landlords, small commercial property owners, schools, local public bodies and facilities teams responsible for occupied buildings. Domestic purchasing tends to be direct, quote-led and influenced by payback, roof suitability and trust in the installer. Commercial work usually involves a finance director, operations lead, estates manager or external electrical contractor, with board or landlord approval where the property structure is shared. Domestic sales cycles can be short; larger roofs tend to move around budget windows, site access and procurement checks. Buying ranges from written quotes to formal tendering and RFP processes.
What they buy
Solar installers tend to spend on job-management, quoting, survey, CRM, accounting and scheduling software before they buy more specialised analytics. Useful systems usually have to handle photos, roof measurements, electrical notes, stock availability, subcontractor diaries and customer documents in one workflow. They also buy insurance, health-and-safety support, accreditation administration, bookkeeping, payroll, recruitment, local search marketing and bid-writing help. Physical purchasing is central: panels, batteries, inverters, mounting systems, cabling, scaffolding, vans, tools and protective equipment. Larger contractors may also need fleet tracking, warehouse space and finance facilities to bridge equipment purchases and staged customer payments.
Why and how to sell to them
Solar installation buyers tend to evaluate suppliers when their operating model becomes harder to manage by spreadsheet: more concurrent jobs, a move into battery storage, a push into landlord or public-sector work, or hiring additional electricians and surveyors. Common pain points are slow quotation, missed follow-ups, rework after weak site surveys, cash tied up in stock, and paperwork delays after installation. Outbound messages usually land better when they refer to a concrete trigger, such as recruitment, new service lines, tender activity or rising commercial enquiries. The safer angle is operational control and margin protection, not generic decarbonisation enthusiasm.
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.
Also in Bristol
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