Solar Panel Quote UK: Costs, Comparisons
A solar panel quote should do more than give you a total price. It should show what will be installed, how much electricity the system should generate, how the design suits your roof and energy use, what is included, and which assumptions support the projected savings.
A low price can become expensive if the system is poorly sized, badly installed or sold using unrealistic export income.
This guide covers typical UK costs, quote comparisons, batteries, payback, grants and the installer checks that protect your investment.
Quick Answer
A typical domestic solar PV system costs around £7,600, according to the Energy Saving Trust, although quotations vary with size, roof access, equipment and electrical work. A battery commonly adds around £5,000 to £8,000. The average domestic system is about 4.5kWp, often requiring roughly 20–30m² of suitable roof area.
A reliable quotation should name the panels and inverter, show estimated annual generation, include a roof layout, scaffolding, electrical work, monitoring, DNO registration, warranties and consumer protection, and state the final price. Compare at least three quotes and challenge forecasts that depend on unusually high export rates or perfect battery trading.
Typical solar panel quote prices in the UK
These are planning ranges, not fixed prices.
| System | Indicative installed price | Best for | Main consideration |
|---|---|---|---|
| Smaller solar-only, around 2–3kWp | £4,500–£6,500 | Smaller roofs and lower-use homes | Less capacity for future EV or heat-pump demand |
| Typical solar-only, around 4–5kWp | £6,500–£9,000 | Many family homes | Roof layout, inverter sizing and daytime use |
| Larger solar-only, around 5–6kWp+ | £8,000–£11,000+ | High-use homes and EV owners | DNO approval and available roof space |
| Solar plus domestic battery | £10,000–£16,000+ | Evening-heavy users | Usable capacity, warranty and tariff compatibility |
Costs rise with complex scaffolding, fragile tiles, multiple roof faces, electrical upgrades or difficult cable routes. Check whether bird protection and making good are included.
What affects a solar panel quote?
System size and generation
Compare total capacity in kilowatt peak, or kWp, and annual generation in kilowatt hours, or kWh—not panel count alone.
The estimate should reflect location, roof pitch, orientation and shading. East- or west-facing roofs can work well, but may generate around 15–20% less than a directly south-facing roof. Panels also work on cloudy days, with lower output.
Equipment and system design
The quote should name each panel, inverter and battery model. Check product and performance warranties, inverter output, battery usable capacity, charge and discharge power, monitoring costs and whether backup power is genuinely included.
A 10kWh battery may not provide 10kWh of usable energy. Whole-home backup also requires dedicated equipment and design.
Roof and electrical work
A survey should assess roof condition, loading, fixing method, shading, inverter and battery location, cable routes, earthing and the consumer unit.
Solar panels usually fall under permitted development, although exceptions can apply to listed buildings and protected locations. The system must also be registered with the Distribution Network Operator, usually by the installer.
What should a complete solar quote include?
A decision-ready quote should provide:
- A property-specific roof layout and total capacity in kWp.
- Expected annual generation and a standard performance estimate.
- Estimated self-consumption, grid import and export.
- Named panels, inverter, mounting system and battery.
- Scaffolding, electrical work, DNO application and making good.
- Monitoring, commissioning and handover documents.
- Product, performance and workmanship warranties.
- Deposit protection, payment stages, exclusions and total price.
RECC advises consumers to obtain at least three quotes, use appropriately certified companies, demand a property-specific performance estimate and full written breakdown, avoid pressure selling and never pay more than 25% upfront.
How to compare solar panel quotes
1. Compare design, not panel count
Ask why the proposed size fits your consumption and future EV, heat-pump or battery plans.
Two installers may propose the same number of panels but produce very different designs because of panel output, inverter limits, shading assumptions and roof orientation.
2. Test the savings assumptions
Separate savings into:
- Solar electricity used directly in your home
- Electricity stored and used later
- Payments for electricity exported to the grid
Ofgem confirms that Smart Export Guarantee suppliers set their own rates and terms, so a current tariff should not be presented as guaranteed long-term income. Your export supplier can also differ from your electricity import supplier.
Be cautious where a quotation relies heavily on battery trading, permanently high export rates or electricity price increases.
3. Compare warranties and aftercare
A panel performance warranty is not an installer workmanship guarantee. Check claim handling, labour cover and protection if the installer stops trading.
You should also establish:
- Who arranges replacement equipment
- Whether scaffolding is covered during warranty work
- Whether warranties are transferable
- Which company provides technical support
- How quickly faults will be investigated
4. Check the installer
Verify MCS certification for solar PV and membership of a recognised consumer code such as RECC or HIES.
Check trading history, insurance, recent local installations, aftercare and which company is contractually responsible for subcontractors.
| Buyer or priority | Usually the stronger option | Why |
|---|---|---|
| Budget-focused homeowner | Correctly sized solar-only system | Lower upfront cost and fewer components |
| Family using power after sunset | Solar with a sensibly sized battery | Shifts daytime generation into evening use |
| EV owner | Larger array with smart EV charging | Daytime charging may beat oversizing a battery |
| Landlord | Simple system with transferable cover | Easier handover and fewer complications |
| Homeworker | Solar-first design | Greater daytime self-consumption |
| Future heat-pump household | Future-ready array and inverter | Avoids designing only around today’s use |
| Best long-term value | Credible yield and dependable aftercare | Lifetime output matters more than headline price |
Will solar panels save money?
Returns are usually strongest when you use generated power in the home and export genuine surplus.
Payback depends on:
- Installation cost
- Roof orientation and shading
- Regional solar generation
- Household electricity use
- Daytime self-consumption
- Electricity prices
- Export tariff rates
- Battery cost and operation
Energy Saving Trust examples based on July 2026 fuel prices indicate roughly nine years in London, ten to eleven years around Manchester, and eleven to twelve years in Stirling, depending on occupancy. These are examples, not guarantees.
Ask for a conservative forecast showing what happens if export rates, electricity prices or self-consumption are lower than assumed.
Is a solar battery worth adding?
A battery stores surplus for evening use and may charge off-peak, but its added cost does not automatically improve payback.
It is generally more useful where:
- Evening electricity consumption is high
- The property exports considerable unused solar power
- Export payments are relatively modest
- A suitable time-of-use tariff is available
- Reducing grid dependence is an important goal
Solar-only may offer better value for homes with strong daytime demand.
Compare battery capacity in kWh with battery power in kW. Capacity shows how much energy is stored; power affects how quickly appliances can draw electricity from it.
Ask how much of the advertised battery capacity is usable and whether the warranty limits charging patterns, discharge depth or tariff-based trading.
Do solar panels work in winter?
Yes. Solar PV uses daylight rather than heat, so it works in winter and cloudy weather. Output is lower because days are shorter and the sun is lower.
A credible quote should show monthly or seasonal generation rather than implying even output throughout the year.
Do not size a battery around a particularly productive summer day. Its capacity should reflect household demand, typical surplus generation and the intended tariff strategy throughout the year.
Grants, VAT and solar finance
Qualifying installed energy-saving materials currently benefit from 0% VAT until 31 March 2027. The rate is scheduled to return to 5% from 1 April 2027. The installer must apply the correct treatment.
There is no universal grant available to every UK homeowner.
In England, the Warm Homes: Local Grant may fund solar panels for eligible privately owned EPC D–G homes, subject to household income, benefits or postcode criteria. Scotland, Wales and Northern Ireland have separate support routes.
For finance, compare total repayment, interest, early repayment charges, ownership and property-sale terms.
A system that appears affordable at a low monthly payment may cost considerably more over a long finance agreement. Compare the financed total with the cash price and projected lifetime savings.
Why the solar installer matters
Workmanship affects weatherproofing, safety, yield, warranty validity and fault resolution.
Under the RECC code, the MCS contractor signing the contract remains responsible even where work is subcontracted. RECC members must protect deposits and advance payments and provide a written workmanship guarantee of at least two years. Verify the actual insurance documents rather than relying on a logo.
Installation quality can influence:
- Whether roof fixings remain watertight
- How shading affects the array
- Whether cables and isolators are safely positioned
- How effectively the inverter operates
- Whether the installation meets warranty conditions
- Whether export payments can be arranged efficiently
- How quickly faults are diagnosed
The cheapest equipment cannot compensate for a poor survey or careless installation.
From solar quote to installation
- Share 12 months of electricity use and any future EV, battery or heat-pump plans.
- Complete a roof, shading and electrical assessment.
- Receive an itemised quotation with clearly stated assumptions.
- Arrange a technical site survey and approve the final design.
- Confirm specification or price changes in writing.
- Complete installation, testing and DNO registration.
- Receive certificates, warranties, manuals and monitoring access.
Your handover pack should normally include the MCS certificate, electrical certification, commissioning information, warranties, equipment details and operating instructions.
Final recommendation
Choose the quotation with the clearest design, most believable generation estimate, transparent exclusions and strongest accountable aftercare—not automatically the lowest total.
Book a free solar assessment with Simple Green Energy. A sound recommendation should explain whether solar-only, solar with a battery or a future-ready design best fits your property.
Frequently asked questions (FAQs)
Clear answers about solar quotation costs, comparing installers, technical surveys, system sizes, projected generation, MCS certification and DNO applications. Speak to Simple Green Energy.
Ready to compare a solar quotation?
Speak with Simple Green Energy about system capacity, projected generation, equipment, warranties, installation scope and the information needed for an accurate property-specific quote.
Request my solar quoteConclusion
A trustworthy UK solar panel quote connects price to performance. It states what is being installed, models your roof honestly, separates bill savings from export income and protects you if something changes.
Obtain three written quotes, compare equivalent capacities and warranties, question optimistic claims and insist on a technical survey.
Done properly, solar can reduce grid electricity use for decades. The quality of the design and installation determines how much value you receive.
