Project Solar UK is a large, MCS-certified national installer offering solar PV, batteries and EV chargers with strong headline warranties and in-house support. It suits homeowners and SMEs who value a one-brand, end-to-end service and are comfortable paying for a “managed” experience. Price-sensitive buyers and those who prefer to hand-pick specific kit brands may find sharper quotes from local MCS installers. Read on for our full Project Solar UK pricing review.
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Who is Project Solar UK?
Project Solar UK Ltd (incorporated in 2011) is a UK-based solar installer that promotes national coverage and a full service from survey to aftercare. It sits within a wider group of “Project” brands, including Project CÜRV (battery storage/roof-integrated kits) and Project EV (chargers). The company markets itself as “UK’s top-rated solar partner” and highlights UK-based support.
What they install
- Solar PV systems (roof-mounted and roof-integrated options).
- Battery storage (Project CÜRV-branded power stores; systems commonly paired with SolaX/Fox ESS hardware).
- EV charge points (via Project EV/CÜRV range, with domestic and commercial AC/DC units).
Their documentation hub links user guides for FoxESS and SolaX devices, indicating regular use of these brands.
Accreditations, consumer protection and finance
- MCS certification (required for SEG export payments) and NAPIT membership are promoted by the firm; independent listings on TrustMark show Project Solar UK under MCS for PV and battery storage with NAPIT as scheme provider.
- HIES consumer protection is referenced across their site.
- FCA-authorised credit broker (FRN 704308), offering finance via a lender panel.
| Tip |
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| For SEG eligibility and stronger protections, always ensure both the installer and the products are MCS-certified. |
Headline warranties and promises
Project Solar UK markets “lifetime panel warranties”, a 10-year workmanship warranty, and a “Year One Performance Promise” (they’ll cover any shortfall vs their year-one estimate). They also advertise 24/7 monitoring. Always read the small print to understand what “lifetime” means (scope, degradation curve, transferability, claim route).
The firm also publishes a datasheet for an Evolution EVO-490 panel claiming a 99-year limited product warranty; treat extraordinary warranty lengths cautiously and validate coverage terms before ordering.
Customer experience – reviews snapshot
Trustpilot shows thousands of recent reviews, with a majority positive but a meaningful minority critical (often citing savings shortfalls vs sales estimates). As of September 2025, the page shows lots of fresh reviews and an 80% share of 5-star ratings alongside 10% 1-star reviews—useful for gauging patterns.
There have also been past complaints handled by the Financial Ombudsman concerning sales representations, underlining the value of getting performance estimates and payback claims in writing.
Pricing – What to expect in 2025
Project Solar UK does not publish fixed system prices; quotes are bespoke (property, kit, scaffolding, DNO, monitoring, install complexity, etc.). For a UK benchmark in September 2025:
- Typical 3.5 kWp PV system (no battery): around £6,100 installed (Energy Saving Trust estimate quoted by MoneySavingExpert).
- PV with battery (illustrative totals):
- 1.5 kW PV + small battery: ~£4,850
- 3.0 kW PV + battery: ~£7,500
- 4.5 kW PV + battery: ~£9,800
- 6.0 kW PV + battery: ~£13,000 (FMB cost guide, Sept 2025).
VAT: residential solar and battery installations are 0% VAT until 31 March 2027 (after which the rate is scheduled to revert to 5%). This now includes retrofitted batteries and standalone grid-connected batteries.
Export earnings (SEG): suppliers set their own export rates (must be above zero); the market range currently spans low single-digits up to c. 30p/kWh on certain tariffs. Check current rates and your usage/export profile.
| Reality check |
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| Large national installers can price above small local MCS firms. If you seek the absolute lowest upfront cost, compare like-for-like with at least 3 MCS quotes (same panel wattage, inverter type, battery capacity, scaffolding, monitoring, warranties, and any roofing/electrical extras). |
How their process and speed compare
The company’s own guidance suggests a one-day install is typical and around two weeks from consultation to completion for straightforward jobs. Treat this as marketing guidance—DNO permissions, scaffolding, and roof works can extend timelines.
Pros and cons
Pros
- National installer with MCS, NAPIT and TrustMark presence, plus HIES protection.
- Broad offer: PV + battery + EV charging with one point of contact.
- Strong-sounding warranty/assurance package and UK-based support.
- FCA-authorised credit-broker finance options.
Cons
- Pricing can be higher than independent local MCS installers for similar kit. (Corroborated by many public comparisons and forum anecdotes; always verify with written like-for-like quotes.)
- Some negative reviews cite over-optimistic savings; ensure modelling and assumptions are documented.
- Very long “lifetime/99-year” warranty marketing needs careful scrutiny of what’s covered and who honours itover time.
Is Project Solar UK a good choice?
Yes—for customers who want a single brand, nationwide service with batteries and EV options, value formal consumer protections, and are comfortable paying potentially more for a managed experience and headline warranties.
Maybe not—if your priority is the lowest possible price or you want to specify exact third-party kit brands; local MCS installers may provide sharper quotes and greater brand choice.
For more, see our guide to the best solar panel installers and solar panel prices.
Example budgeting guide (UK benchmarks)
| System goal | Typical set-up | Indicative installed price* |
|---|---|---|
| Lowest upfront PV | ~3.5 kWp, string inverter, no battery | ~£6,100 |
| Balanced PV + battery | ~4.5 kWp + ~5 kWh battery | ~£9,800 |
| Larger family & EV | ~6.0 kWp + ~10 kWh battery + EV charger | £13,000+ (charger extra) |
* Benchmarks from MSE/EST and FMB. Your Project Solar UK quote may be higher or lower depending on roof, scaffolding, DNO, kit choice, and finish level.
How to compare Project Solar UK against other installers
- Insist on MCS & a consumer code (HIES/RECC) for SEG eligibility and protections.
- Demand a written energy model (kWh/year with shading losses, panel orientation/tilt, degradation, battery round-trip losses).
- Check the kit list (panel model/datasheet, inverter brand, optimiser/microinverter plan, battery capacity and usable kWh).
- Scrutinise warranties (who underwrites them, claim route, workmanship cover, monitoring hardware, and any Year-One performance guarantee terms).
- Get at least three like-for-like quotes and compare total installed cost after 0% VAT.
- Model SEG earnings with your likely export and current tariff options; SEG rates vary by supplier.
Frequently asked questions
No—quotes are bespoke. Use UK benchmarks to sanity-check your quote and compare like-for-like across installers.
They publish literature claiming lifetime/99-year panel warranties, but you should read the full terms (exclusions, transferability, degradation thresholds, and who underwrites the promise).
Yes, for qualifying residential installations in Great Britain until 31 March 2027 (includes retrofitted/standalone batteries since Feb 2024 changes).
Yes, via the Smart Export Guarantee; suppliers set rates and terms, so shop around.
They suggest around two weeks from consultation to completion and typically one day on site for straightforward jobs, but real-world timelines depend on DNO approvals, scaffolding and roof works.
Verdict – Project Solar UK review
Project Solar UK is a credible, protection-rich option with a broad offer (PV, batteries, EV) and strong-sounding warranties. If you want a national provider and value the convenience of a single brand from survey to aftercare, it is worth getting a quote—just be sure to compare it against at least two MCS alternatives on a like-for-like basis and have all performance and warranty promises documented in writing.