How much do solar panels cost for a 3 bed house?

A typical 4kW to 5kW system for a 3 bedroom house costs around £5,000 to £8,000 without a battery, and roughly £9,000 to £13,000 with a battery.

Is a solar battery worth it?

A battery lets you use more of what you generate in the evening and adds £3,000 to £6,000. Whether it pays back depends on your usage pattern and electricity price, so model it before committing.

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How much do solar panels cost in the UK?

A solar setup is priced by system size in kilowatts, then by whether you add a battery. A battery roughly doubles the value of the panels for evening use but adds a lot to the price.

From

£5,000

Typical

£7,000

Up to

£12,000

installed · typical UK job, 2026

Time on site: 1 to 2 days on site

Price your solar panels

Adjust for your job and area to get a range.

What's included in the price

Panels, inverter and mounting
Installation and scaffolding
Certification and grid notification
A monitoring app

What changes the cost

System size in kilowatts (more panels, more output)
Whether you add a battery and how big
Roof type, pitch and any shading
Scaffolding and access

Costs by area

Less location-sensitive than wet trades, but scaffolding and labour are higher in London.

Common questions

How much do solar panels cost for a 3 bed house?: A typical 4kW to 5kW system for a 3 bedroom house costs around £5,000 to £8,000 without a battery, and roughly £9,000 to £13,000 with a battery.
Is a solar battery worth it?: A battery lets you use more of what you generate in the evening and adds £3,000 to £6,000. Whether it pays back depends on your usage pattern and electricity price, so model it before committing.

These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.