UK Renovation Budget Planner
Estimate rooftop solar PV and battery storage installation costs in pounds sterling (GBP). Model system sizes from 3.5kW to 8kW with certified MCS contractor allowances.
UK Cost Benchmarks
Average installed costs across typical specifications. Figures include materials and standard UK tradesperson labour.
| Specification / Option | Typical UK Fitted Range | Characteristics & Considerations |
|---|---|---|
| 3.5 kW Solar PV Array (Approx. 8-10 Panels) | £5,500 – £7,500 fitted | Ideal for smaller 2-3 bed homes, generates ~3,000 kWh/year |
| 5.0 kW Solar PV Array (Approx. 12-14 Panels) | £7,000 – £9,500 fitted | Standard 3-4 bed family home system, generates ~4,400 kWh/year |
| 5.0 kW Solar PV Array + 5kWh Battery Storage | £10,500 – £14,000 fitted | Maximizes self-consumption, stores daytime solar power for evening use |
HomeProjects.money editorial team reviewed this page on 6 August 2026. HomeProjects.money is an independent planning tool, not a contractor, surveyor or building-control body. Listed sources inform the context and checking process; calculator ranges remain editorial planning assumptions that must be tested against written local quotes.
Planning assumptions
Panels, inverter, mounting, standard electrical work and installation before incentives. Solar pricing should be tied to an annual-energy objective, usable roof area, shading, electrical capacity and an itemised equipment design. A headline price per kilowatt does not describe production, export, storage or roof work.
Orientation, tilt, shade, climate and module layout affect annual generation. Ask for the assumptions and software report behind the forecast.
Covering life, structural capacity, access, service-panel capacity, earthing or grounding and cable routes may need work before installation.
String, optimiser and microinverter designs have different monitoring and replacement implications. Batteries add controls, location, fire and backup-load decisions.
Scope decisions
Cost comparisons are useful only when every contractor prices the same performance, preparation and finishing requirements.
The simplest system where daytime use and export arrangements provide acceptable value without backup power.
Useful when time-of-use rates, backup needs or low daytime consumption justify added cost and replacement planning.
Replace or repair a near-end-of-life roof before panels to avoid paying for removal and reinstallation later.
Country requirements
The calculator never mixes UK and US prices. The guidance below also follows the selected country; local authorities and code officials remain the definitive source.
Rooftop solar panels are Permitted Development in England and Wales provided they project no more than 200mm from the roof slope. Installers must be MCS accredited to enable Smart Export Guarantee (SEG) export payments.
Looking for US project planning in USD? Browse our US States & Cities Cost Directory or review our US Home Improvement Planning Guides.
Quote checklist
Common questions
No. The calculator shows a pre-incentive planning range because programmes and eligibility can change.
Not necessarily. Roof layout, shade, consumption profile, export value and electrical limits affect the useful size.
No. Compare expected life, warranty throughput, replacement access and future cost separately.
Sources and checks
These sources support regulatory and market context. They do not publish the calculator's exact range and are not presented as contractor quotations.