Solar panels: costs, savings and funding

Last reviewed: 20 July 2026

Solar costs around £1,450 per kWp installed, so a typical home system comes to roughly £6,400, with 0% VAT until 31 March 2027. You save on the electricity you use and earn on what you export. The Warm Homes Loan can fund up to £15,000.

What it costs

System prices, the 0% VAT window and battery add-ons.

Solar costs

Funding and export

The loan, the Smart Export Guarantee and choosing a tariff.

Solar funding

Savings and payback

How much you save depends on your bill, roof direction, shading and whether you add a battery. A battery lets you use more of what you generate rather than exporting it cheaply. Our calculator sizes a system from your bill and estimates the payback year.

Work out your solar payback

Sources

2026 market install guides
DESNZ Warm Homes Loan Scheme Scheme Rules, June 2026
Smart Export Guarantee tariff market

Last reviewed: 20 July 2026

Know the day the loans go live

The Warm Homes Loan Scheme is expected to open to the public in September 2026. Join the list and we will email you when lenders open, with occasional funding updates in between.