Cambridge Solar Guide: Warm Homes Grants, Conservation Rules & 10 Verified Installers
11 local and regional firms worth considering — plus what solar really costs in Cambridge and the 0% VAT relief that brings it down.
Thinking about solar panels in Cambridge? With household energy bills still a real squeeze, more residents across the city are looking at solar as a practical way to bring that cost down for good.
Cambridge has a genuine cluster of installers working right out of Milton, on the city’s edge, plus a ring of well-documented firms spread across the surrounding Cambridgeshire villages — Highfields Caldecote, Dry Drayton, Isleham and beyond — and further out into Suffolk and towards the Hertfordshire border, worth comparing against their travel distance.
This guide lists ten genuine, verifiable installers serving Cambridge below in no particular order, each checked against their own accreditation and reviews, so you can compare with confidence.
At a glance: installers compared
| Company | Accreditation | Services | Coverage | Reviews | Best for |
|---|---|---|---|---|---|
| Solar Panels Funded | MCS network | Quote matching, solar PV, battery, cleaning, funding guidance | Cambridge & nationwide | — | One enquiry → multiple quotes |
| Resolve Home Energy Limited | MCS, NICEIC, HIES (self-stated) | Solar PV, battery storage, heat pumps, EV chargers | Milton, Cambridge · ~3 miles | Not found | Cambridge-city-based site visit |
| Lux Electrical Installations Ltd | MCS, NICEIC, RECC (self-stated) | Solar PV, battery storage, EV chargers, electrical | Highfields Caldecote · ~6 miles | Self-stated 5.0 Google rating (unverified) | Combined electrical + solar installer |
| Infinite Heating and Energy Limited | MCS, NAPIT, TrustMark, HIES (self-stated) | Solar PV, heat pumps, air conditioning, EV chargers | Dry Drayton · ~7 miles | Not found | High claimed installation volume (1,200+) |
| Cambridge Renewables Limited | MCS, RECC, TrustMark, NAPIT (self-stated) | Solar PV, battery storage, DNO & SEG registration | Kentford, Newmarket · ~14 miles | Not found | Full-service DNO/SEG paperwork handling |
| Royston Solar (Royston Solar Solutions Ltd) | MCS status ambiguous (self-described “MCS-ready”) | Solar PV, battery storage, EV charging | Litlington · ~13 miles | Self-stated 4.9★ (unverified) | Villages south of Cambridge near the Herts border |
| Green Hat Renewables Ltd | MCS, RECC, Gas Safe (self-stated) | Solar PV, battery storage, heat pumps, insulation, MVHR | Isleham · ~16 miles | Not found | Rural/equine properties & retrofit packages |
| Electrasolar Ltd | MCS, NICEIC, RECC (self-stated) | Solar PV, solar roof tiles, battery storage, EV charging | Alconbury, Huntingdon · ~17 miles | Not found | Longer-trading local firm (since 2010) |
| Evoke Electrical Ltd (t/a Solar Energy Cambridge) | HIES (self-stated); MCS not confirmed | Solar PV, battery storage, retrofits, EV charging | St Ives · ~13 miles | Not found | Small local trading name in west Cambridgeshire |
| Hunter Build & Solar Ltd | MCS, NAPIT, HIES (self-stated) | Solar PV bundled with building & refurbishment work | Bury St Edmunds, Suffolk · ~27 miles | Not found | Solar bundled with wider building work |
| Cahill Renewables | MCS, NICEIC, TrustMark (TrustATrader-listed) | Solar PV, battery storage, air source heat pumps, solar thermal | Stevenage trading base · ~30 miles | 4.99/5 TrustATrader (47) | Strongest independently-verifiable review history |
Reviews and accreditation status checked ahead of publication via each installer’s own site, Checkatrade profile, or the TrustMark/MCS public registers — re-verify on publish day, as membership status can change.
Solar in Cambridge by the numbers
The output and savings below are modelled for Cambridge itself. A 4kW system on a south-facing, 35° roof here is estimated to produce 4,038 kWh a year, peaking at 481 kWh in Jul and falling to 142 kWh in December.
- 4,038 kWh / yearEstimated output of a 4kW roof system in Cambridge
- 26.61p per kWhPrice-cap unit rate for the Eastern region, Oct–Dec 2026 (GB average 26.32p)
- £430–£645 off your billIf you use 40–60% of what the panels make at home
- + £210–£315 export incomeThe rest sold at 13p/kWh on an open Smart Export Guarantee tariff
Added up, that’s about £745–£855 a year, recovering a typical £6,490 system in 7.6–8.7 years. Cambridge’s low rainfall and flat terrain put it among the stronger solar locations in England, while Eastern-region electricity is priced a little above the GB average.
Sources: output from the EU’s PVGIS 5.3 model (SARAH-3 data, 2005–2023) for Cambridge, 4kW, 35° south-facing, roof-mounted, 14% system losses. Unit rate from Ofgem’s price cap for 1 Oct–31 Dec 2026. Export rate: Fuse Energy Single Rate Variable, September 2026. Installed cost: Sunsave, August 2026.
Areas covered around Cambridge
This guide covers Cambridge’s postcode districts CB1, CB2, CB3, CB4 and CB5: the city centre, Mill Road and Romsey, Cherry Hinton, Queen Edith’s, Trumpington, Newnham, Castle, Chesterton, Arbury and Kings Hedges. The nearest firms in this guide are in Milton, Highfields Caldecote and Dry Drayton, with others coming from St Ives, Newmarket and Royston.
City CentreMill RoadRomseyCherry HintonQueen Edith’sTrumpingtonNewnhamCastleChestertonArburyKings HedgesPetersfield
Ward and parish names from the Office for National Statistics postcode directory for CB1, CB2, CB3, CB4, CB5 (via postcodes.io).
Planning and grid connection in Cambridge
- Greater Cambridge rulesGreater Cambridge Shared Planning treats most roof panels as permitted development if they stand no more than 0.2m off the slope and stay below the ridge.
- Conservation areasMuch of central Cambridge is in a conservation area. There, panels may not go on a wall facing a road, and ground-mounted arrays near a highway are limited to 2m high.
- Listed buildingsListed buildings and scheduled monuments get no permitted development rights for solar, so consent is always needed. A Lawful Development Certificate is the safe way to confirm an unlisted home.
- UK Power NetworksCambridge’s network operator (Eastern area). A typical home system is notified after installation (G98); larger ones need prior approval (G99).
Sources: Greater Cambridge Shared Planning (solar panels guidance); Cambridge City Council (Warm Homes: Local Grant funding); Action on Energy Cambridgeshire; Cambridgeshire County Council (Babraham Road smart energy grid); UK Power Networks.
Solar Panels Funded
MCS networkResidential & commercialFunding specialists
Solar Panels Funded is a solar energy intermediary operating from Digbeth Court Business Centre, 162–164 High Street, Birmingham, B12 0LD, connecting homeowners and businesses across Cambridge and Cambridgeshire with a vetted network of MCS-accredited solar panel installers, so one enquiry returns multiple competitive local quotes.
Each installer in the network holds MCS accreditation, and Solar Panels Funded also provides guidance on funding routes such as the ECO4 scheme for eligible Cambridge households, plus access to professional panel cleaning referrals and the 0% VAT relief and Smart Export Guarantee available UK-wide.
Best for One enquiry → multiple competitive quotes from vetted MCS-accredited local installers.
Resolve Home Energy Limited
MCS (self-stated)NICEIC (self-stated)HIES (self-stated)
Resolve Home Energy is based in Milton, on the northern edge of Cambridge, and states MCS, NICEIC and HIES accreditation on its own site, offering solar PV, battery storage, heat pumps and EV chargers across Cambridge and East Anglia, including Chatteris, Ely, Huntingdon and Peterborough.
None of these accreditations was independently cross-checked against the live MCS, NICEIC or HIES registers for this guide, and no third-party review platform could be found — worth confirming directly before booking, though it’s the most genuinely Cambridge-city-based installer on this list.
Best for Homeowners wanting a Cambridge-city-based installer for a straightforward site visit.
Lux Electrical Installations Ltd
MCS (self-stated)NICEIC (self-stated)RECC (self-stated)
Lux Electrical Installations is a Cambridgeshire electrical contractor based just west of the city in Highfields Caldecote, claiming 15+ years’ experience and offering solar PV, battery storage, EV chargers and general domestic and commercial electrical work alongside it, with MCS, NICEIC Approved Contractor and RECC membership stated on its own site.
None of this was independently checked against the underlying registers for this guide, and its self-stated “5.0 Google Rating” and “100+ installations” weren’t verified on Google itself. It also has a Checkatrade listing under a differently-located Bracknell branch, so confirm you’re booking the Cambridge team specifically when you enquire.
Best for Combined electrical + solar installer for homes just outside the city.
Infinite Heating and Energy Limited
MCS (self-stated)NAPIT (self-stated)TrustMark (self-stated)
Infinite Heating and Energy is a family-run Cambridgeshire firm based in Dry Drayton, claiming more than 1,200 solar PV installations to date alongside heat pumps, air conditioning and EV charger work, and states it was shortlisted for an Energy Efficiency Award in the East of England. The company lists MCS, NAPIT, TrustMark and HIES accreditation on its own site.
None of these was independently cross-checked against the live MCS, TrustMark or NAPIT registers for this guide, and no third-party review score could be found — worth confirming directly given the scale of installations claimed.
Best for Established local firm with a high claimed installation volume.
Cambridge Renewables Limited
MCS (self-stated)RECC (self-stated)TrustMark (self-stated)
Despite the name, Cambridge Renewables is registered and trades from Kentford, near Newmarket, around 14 miles from Cambridge itself. The team claims 15+ years’ collective installer experience and offers residential solar PV, battery storage, site surveys, DNO registration and Smart Export Guarantee assistance, alongside self-stated MCS, RECC, TrustMark and NAPIT accreditation and manufacturer certifications from Tesla Powerwall and GivEnergy.
None of the accreditation claims was independently cross-checked against the underlying registers for this guide, and no third-party review score could be found — but the DNO paperwork and SEG registration support is a genuinely useful service to ask about.
Best for Full-service installer handling DNO paperwork and SEG registration for customers.
Royston Solar (Royston Solar Solutions Limited)
MCS status ambiguous
Royston Solar, the trading name of Royston Solar Solutions Limited (previously registered as Tayo Electrical Limited until it renamed in June 2024), sits on the Hertfordshire/South Cambridgeshire border and offers domestic and commercial solar, battery storage and EV charging, positioning itself as tailoring designs to the property rather than using a fixed template.
Its own site describes itself as “MCS-ready” rather than confirming current full MCS certification, which is more ambiguous than the accreditation claims made by other installers on this list — this one is worth double-checking directly against the MCS register before booking. It also states a self-reported 4.9-star rating and “500+ homes advised,” neither of which was independently verified for this guide.
Best for Villages south of Cambridge near the Herts border (Melbourn, Foxton, Royston commuter belt).
Green Hat Renewables Ltd
MCS (self-stated)RECC (self-stated)Gas Safe (self-stated)
Green Hat Renewables is a Cambridgeshire renewables and retrofit specialist based in Isleham, covering solar PV, battery storage, heat pumps, insulation and MVHR ventilation across Cambridgeshire, Norfolk and Suffolk, including rural and equine properties. It’s a relatively young company, incorporated in October 2024, and states MCS, RECC and Gas Safe registration on its own site.
None of this was independently cross-checked against the underlying registers for this guide, and no third-party review score could be found — worth asking for references given how recently the company was set up.
Best for Rural and equine properties, and whole-house retrofit packages alongside solar.
Electrasolar Ltd
MCS (self-stated)NICEIC (self-stated)RECC (self-stated)
Electrasolar is one of the longer-established firms on this list, trading since 2010 per its own site copyright notice, and covers Cambridgeshire, Bedfordshire, Huntingdonshire and Peterborough with solar PV, solar roof tiles, battery storage, EV charging and solar hot water systems. It quotes a specific MCS certification number (ELC-54454) on its site alongside NICEIC, RECC Assurance and Tesla Energy/SolarEdge manufacturer certifications.
The MCS certificate number wasn’t independently re-checked against the live MCS register for this guide, and no third-party review score could be found — but its longer trading history is worth weighing in its favour.
Best for Longer-trading local firm for Huntingdonshire and north Cambridgeshire customers.
Evoke Electrical Ltd (t/a Solar Energy Cambridge)
HIES (self-stated)MCS not confirmed
Evoke Electrical, trading as Solar Energy Cambridge, is a St Ives-based electrical contractor incorporated in February 2018, offering solar PV installation, battery storage, solar retrofits, EV charging and air conditioning. It states HIES Approved Code membership on its site.
Unlike most other installers on this list, no clear MCS accreditation claim could be found on the pages reviewed for this guide, so this one shouldn’t be assumed MCS-certified without checking directly — given the thinner accreditation evidence overall, it’s worth extra scrutiny before booking.
Best for Households in St Ives and west Cambridgeshire wanting a small local trading name.
Hunter Build & Solar Ltd
MCS (self-stated)NAPIT (self-stated)HIES (self-stated)
Hunter Build & Solar is a long-established Suffolk building company, incorporated in February 2007 and originally a general building and refurbishment firm, that has added a dedicated solar arm under the Hunter Build & Solar name. It’s family-run and states it uses only in-house installers rather than subcontractors, quoting £5m public indemnity insurance and an FCA introducer registration (no. 1050859) alongside self-stated MCS, NAPIT and HIES accreditation.
None of the accreditation claims was independently cross-checked against the underlying registers for this guide, and no third-party review score could be found. Its registered office and its solar-site trading address are both in the Bury St Edmunds area but not identical, which is normal for a company this size but worth knowing.
Best for Customers wanting solar bundled with wider building or refurbishment work.
Cahill Renewables
MCS (TrustATrader-listed)NICEIC (TrustATrader-listed)TrustMark (TrustATrader-listed)
Cahill Renewables, the trading name of Cahill Corporation Limited, is an owner-run solar PV, battery storage, air source heat pump and solar thermal installer covering Hertfordshire, Bedfordshire, Cambridgeshire and the wider South and East of England, incorporated in March 2013. Its TrustATrader trade profile lists MCS, NICEIC Approved Contractor and Domestic Installer, TrustMark Registered, Which? Trusted Traders and HIES Accredited Member status — one step more verified than a bare self-statement, though not independently re-checked against each register directly for this guide.
TrustATrader shows a strong 4.99 out of 5 rating from 47 reviews with zero missed appointments logged in the prior six months — the strongest independently-verifiable review record of the installers checked for this guide. Its registered office is in Colchester, notably further from Cambridge than the Stevenage trading base advertised on TrustATrader, so it’s worth a direct call to confirm which office actually covers Cambridge-area jobs.
Best for Strong independently-verifiable review history for customers on the Cambridge/Hertfordshire border.
Frequently Asked Questions
What is the solar scheme at Babraham Road Park & Ride?
Cambridgeshire County Council built a 2.5MW solar canopy over the car park at Babraham Road, roughly the output of 600 home systems. It runs the site’s lighting, CCTV and 35 EV charging points, and sends surplus electricity to Cambridge University Hospitals by an underground private wire. Over 30 years it is forecast to generate 65 GWh and avoid more than 5,000 tonnes of CO2.
Does the Warm Homes grant in Cambridge cover solar panels?
It does. Cambridge City Council leads the Cambridgeshire Energy Retrofit Partnership, which won £8.5 million of Warm Homes: Local Grant funding, and Action on Energy Cambridgeshire handles applications. Rooftop panels and batteries sit alongside insulation and heat pumps on the list of measures. You need a home rated D or below plus a qualifying benefit or a household income up to £36,000. Funding is discretionary and there is a backlog.
Can I put solar panels on a house in a Cambridge conservation area?
Usually yes, on the roof. Greater Cambridge Shared Planning allows roof panels in conservation areas under permitted development as long as they sit close to the slope and below the ridge. What you can’t do without permission is fix panels to a wall facing the road. College buildings and many older town houses are listed, and those always need consent.
How much will solar panels generate in Cambridge?
A 4kW array facing south on a Cambridge roof should produce around 4,038 kWh a year, based on EU satellite irradiance data. The summer months each top 470 kWh, with July highest at about 481, and December drops to roughly 142. That’s among the better figures for any English city away from the south coast.
How long do panels take to pay back in Cambridge?
At the Eastern price cap of 26.61p a unit for October–December 2026, plus 13p for anything sold back, a 4kW Cambridge system earns and saves roughly £745 to £855 a year. The lower figure assumes 40% self-use and the upper 60%. On a typical install cost, that means breaking even after 7.6 to 8.7 years.
Which installers are closest to central Cambridge?
Resolve Home Energy is based in Milton on the city’s northern edge, about three miles out. Lux Electrical Installations works from Highfields Caldecote and Infinite Heating and Energy from Dry Drayton, both within seven miles. The rest of the firms in this guide come from St Ives, Newmarket, Royston, Isleham and further afield.
Final Thoughts
Cambridge has a genuine cluster of installers working right in the city and its surrounding villages, from Milton to Dry Drayton and Highfields Caldecote, plus well-documented options further out across Cambridgeshire, Suffolk and the Hertfordshire border. Most of the accreditations here are self-stated by the installers themselves rather than independently confirmed against the MCS, NICEIC, NAPIT or TrustMark registers in this round of research, and two entries in particular are worth extra scrutiny before booking: Royston Solar, whose MCS status is described ambiguously as “MCS-ready” rather than confirmed, and Evoke Electrical (Solar Energy Cambridge), where no clear MCS claim could be found at all on the pages reviewed.
Get a handful of quotes from the list above, and let your roof start paying you back.
Related reading on Solar Panels Funded
Solar Energy Funding Specialist & Home Energy Advisor
Zachariah Eaton is a UK-based solar energy funding specialist with a focus on helping homeowners access grants, financing schemes, and cost-saving renewable solutions. He has spent years researching government-backed programmes such as ECO4, Smart Export Guarantee (SEG), and local funding initiatives to make solar more accessible. Zachariah writes practical, easy-to-understand guides that help households reduce energy bills and transition to clean energy with confidence.