Solar Panel Costs | Homeowner Budget Guide

The 10-second answer

How much do solar panels cost?

Typical residential systems often range from roughly £5,000–£12,000+ depending on size and battery storage.

What affects the price?

Number of panels, inverter quality, battery storage, roof access and scaffolding.

Do planning fees apply?

Usually not on unrestricted houses — see solar panel planning permission.

Are there grants?

Government schemes change — check current incentives when budgeting.

Which route might apply?

You may be looking at permitted development if:

Roof-mounted panels within permitted development limits.
Unrestricted house.

This does not automatically mean permitted development applies. Every property and proposal is different and still needs to be checked.

You may need planning permission if:

Listed building or conservation area restrictions.
Large ground-mounted array.

Many projects require planning permission, but the answer depends on the individual circumstances.

Planning: solar panel planning permission and solar panels and heat pumps overview. Overview: planning permission vs permitted development.

Main cost areas

Panels and inverter
Battery storage (optional — adds £2,000–£8,000+)
Installation labour and scaffolding
Electrical connection and consumer unit upgrades if needed
Monitoring equipment
Planning or listed building consent fees (if applicable)

System size and payback

Most domestic systems are 3–6 kWp (kilowatt peak). Larger systems cost more but may generate more savings. Payback periods depend on electricity prices, export tariffs and how much you use during the day.

Planning permission is rarely a cost factor for standard roof installations — see solar panel planning permission.

When planning adds cost

Listed building consent — see listed building consent explained
Conservation area applications — see conservation areas explained
Ground-mounted arrays needing planning permission
Heritage-sensitive designs requiring specialist reports

Typical cost examples

Cost ranges are indicative guides only — not quotes. Prices vary significantly by region, specification and installer.

4 kWp roof system without battery

Might cost £5,000–£7,000 installed. Often permitted development.

6 kWp with battery storage

Might cost £10,000–£14,000+.

Solar on a listed building

Consent costs and heritage-sensitive mounting add expense. See solar panel planning permission.

How to check your property

Before relying on general guidance, check the property and proposal together.

Confirm the property type. Houses, flats and maisonettes are often treated differently for permitted development.
Check whether the building is listed. Listed building consent and planning permission may both be needed.
Check whether the property is in a conservation area or other restricted area. Local restrictions such as Article 4 directions can remove some permitted development rights.
Review the size, position and design of the proposal. Measurements, previous additions and neighbour impact all matter.
Get quotes from MCS-certified installers. Quality certification matters for incentives and insurance.

Planning Digital helps bring these checks together so you can understand the likely planning route before going further.

Common mistakes

Choosing the cheapest quote without checking installer certification.
Not checking roof condition before installation.
Assuming planning is never needed — check listed status.

Frequently asked questions

Do solar panels increase house value?

Evidence varies — but energy savings appeal to many buyers.

Can I combine with a heat pump?

Yes — see heat pump planning permission and heat pump costs guide.

How can I check planning?

Use Planning Digital's Project Planner. See solar panel planning permission.

Check planning for your solar installation

Most systems are straightforward — but listed buildings and conservation areas need extra checks.

Try it on my house

Solar Panel Costs: What Should Homeowners Budget?