Solar Panel Installation Cost UK
A clear guide to what solar panel installation actually costs in the UK. Typical residential systems range from £5,000 to £12,000 depending on system size, roof type and whether you add battery storage. No hidden fees — we survey before we quote.
How much do solar panels cost in the UK?
Solar panel prices have fallen significantly over the past decade. The total cost depends on system size, panel quality, inverter type and whether you include battery storage. Here are realistic UK price ranges for 2025/2026:
All prices include panels, inverter, installation, testing and certification. Battery storage is additional — see below.
Price scenarios
Small home system
A 3 kWp system with 8 panels on a straightforward pitched roof. Single-storey scaffolding, short cable run to the consumer unit. Ideal for a two-bed home with moderate energy usage. Generates around 2,500–3,000 kWh per year.
Typical home system with battery
A 5 kWp system with 12–14 panels plus a 5 kWh battery. Two-storey scaffolding, standard inverter, monitoring setup. Covers most of a family home's daytime usage and stores excess for evening use. The most popular option we install.
Commercial installation
A 20–50 kWp system on a warehouse or office roof. Includes structural survey, G99 grid application, commercial inverter, monitoring and load management. Payback typically 4–7 years depending on self-consumption and tariff.
What affects solar panel installation cost?
Number of panels
More panels mean a larger system and higher output — but also higher cost. We size the system to match your actual energy usage, not to fill the roof.
Roof type and access
Standard pitched tile roofs are the easiest and cheapest to work with. Flat roofs need tilt frames. Slate, standing seam or complex roof shapes add time and materials.
Scaffolding
Single-storey properties need less scaffolding than two or three-storey buildings. Difficult access (narrow side passages, conservatories below) can increase scaffolding costs.
Inverter choice
String inverters are the most cost-effective for unshaded roofs. Microinverters or optimisers cost more but perform better where shading is an issue.
Battery storage
Adding a battery increases the upfront cost by £2,500–£5,000+ depending on capacity. It improves self-consumption and reduces reliance on grid electricity.
Electrical upgrades
If your consumer unit is outdated or full, it may need upgrading. Earthing improvements are sometimes required in older properties.
Monitoring setup
All our installations include basic monitoring. Advanced monitoring with app control and tariff optimisation may be available depending on the inverter and battery brand.
What is included in the price?
- Free site survey and roof assessment
- Custom system design based on your energy usage and roof
- High-efficiency solar panels with 25-year performance warranty
- Inverter (string, hybrid or microinverters as appropriate)
- All mounting hardware, cabling and containment
- Professional installation by qualified engineers
- Full electrical testing and MCS-compliant certification
- DNO notification and grid connection paperwork
- System commissioning and monitoring setup
- User handover — we explain how everything works
Battery storage costs
Adding battery storage increases the upfront cost of a solar installation but significantly improves how much of your own energy you use. Without a battery, a typical home uses 50–70% of the solar energy generated. With a battery, that rises to 70–90%.
A 5 kWh battery typically adds £2,500–£3,500 to the installation cost. A 10 kWh battery adds £4,000–£5,500. The right size depends on your evening energy usage and whether you charge an electric vehicle overnight.
We install EcoFlow, Sigenergy and SolaX battery storage systems and size the storage around your actual usage — not a one-size-fits-all recommendation.
How to get an accurate quote
Online solar calculators give rough estimates but cannot account for your specific roof, shading, electrical supply or energy usage. That is why we carry out a detailed site survey before quoting.
During the survey we assess your roof orientation, pitch and condition. We check for shading from trees, chimneys or neighbouring buildings. We inspect your consumer unit, measure available roof space and review your energy bills to size the system correctly.
You then receive a fixed, itemised quote with a clear breakdown of panels, inverter, battery (if applicable), installation and any electrical work. No surprises, no pressure.
Solar panel cost FAQ
Get a fixed quote for solar installation
Book a free site survey. We assess your roof, check your electrics and give you an honest, itemised price — no obligation, no pushy sales.