solar pv panels
Solar Panels Installed Cost
Understanding the cost of installing solar panels helps you make an informed decision about whether solar is right for your home or business. This page explains what affects the price of a solar PV system, typical UK costs, and what’s included when you choose Mr Solar.
How Much Do Solar Panels Cost to Install?
The cost of a solar panel system depends on system size, property type, equipment quality, and installation complexity. As a general guide for domestic installations in the UK:
- 2–3 kW system: £4,000 – £5,500 Smaller Battery Included
- 3–4 kW system: £5,500 – £7,000 Small Battery Included
- 5–6 kW system: £7,000 – £9,000 Medium Battery Included
Prices are indicative and may vary depending on roof type, access, electrical upgrades, and optional extras such as larger battery storage.
What Affects the Cost of Solar Panel Installation?
System Size & Energy Usage
Larger systems generate more electricity but cost more to install. The right system size depends on your household’s energy usage and available roof space.
Roof Type & Access
Factors such as roof height, pitch, material (tile, slate, metal), and ease of access can affect installation time and cost. 
Inverter Type
The choice of inverter (string inverter, hybrid inverter, or optimised systems) can influence cost, performance, and future expandability.
Battery Storage (Optional)
Adding a solar battery allows you to store excess energy for use later, increasing self-consumption. Battery systems typically add £2,500 – £6,000 depending on capacity and brand.
Electrical & Compliance Work 
Some properties require electrical upgrades, additional protection devices, or compliance work to meet current regulations, which may affect overall cost.
What’s Included in Our Installed Price?
When you choose Mr Solar, our installed cost typically includes:
- Site survey and system design
- Supply of solar panels, inverter, and mounting system
- Full installation and commissioning
- Electrical testing and certification
- Grid notification and documentation
- System handover and basic user guidance
There are no hidden costs – everything is clearly explained before work begins.
Savings, Payback & Value
Installing solar panels can significantly reduce your electricity bills. Many customers see savings immediately, with typical payback periods ranging from 5–9 years, depending on system size, usage patterns, and energy prices.
Solar panels can also add value to your property and reduce reliance on rising energy costs.
Why Choose Mr Solar? 
- Over 15 years’ experience in solar PV installations
- High-quality, reliable equipment
- Fully compliant installations to current UK standards
- Local service covering Norfolk and Suffolk
- Honest advice with no pressure selling
Get a Tailored Quote
Every property is different. For an accurate installed cost, we recommend a tailored assessment.
📞 Call us on 01603 394104 or 01493 289118
Or request a quote using the form below.
Prices shown are indicative and subject to site survey.
❓ Solar Panels Installed Cost FAQs
Q: Do I need planning permission to install solar panels?
In most cases no, solar panels are Class A permitted development in the UK. There are exceptions for listed buildings or conservation areas. Ideal Home
Q: How many panels will I need?
It depends on your home’s energy usage and roof space:
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Small homes: 2–6 panels
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Average 3-bed home: ~10 panels (about 3.5–4 kW) solarguide.co.uk
Q: Will solar panels increase my home value?
Solar panels can make a property more attractive and potentially increase value, especially with lower energy costs and green credentials. MoneyWeek
Q: Can I finance solar panels?
Yes — many installers offer monthly payment plans or financing options. Subscription models (no upfront cost with monthly repayment) also exist. The Times
Q: Are there government incentives?
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Zero-rate VAT on solar panel installations and batteries applies in many cases. MoneyWeek
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Targeted schemes like ECO4 can help low-income or inefficient homes. MoneyWeek
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The Smart Export Guarantee pays for surplus electricity exported to the grid. Checkatrade
Q: How long do solar panels last?
Modern panels commonly last 25 years or more with minimal maintenance
