Property Tools

Solar Panel ROI Calculator

Accurate, long-term solar savings based on real-world UK assumptions.

Built for realistic, long-term solar decisions

This calculator models your solar performance over a full 25-year system lifespan, using real-world assumptions rather than simplified first-year estimates.

Real solar panel degradation inclusion
Electricity price inflation included
Electricity price inflation included
Roof orientation and bill size accounted for
Accurate payback tracking
Free & easy to use
Not sure? Most UK homes need 4-6 kW
2025 typical costs: £4,500 (3kW), £5,500 (4kW), £7,500 (6kW)
Ofgem price cap: 27.03p (drops to 25.73p from July 2025)
UK average: £80-150/month

Calculating, please wait...

Your Solar Panel Results

Payback Period:

Total 25-Year Savings:

ROI:

Monthly Savings:

CO₂ Saved:

©2026 - Propertistics: UK Property & Area Demographic Statistics

Powered by TKP Technologies

Propertistics uses data provided by Ordnance Survey. © Crown copyright and database rights 2023 Ordnance Survey. All rights reserved. © Local Government Information House Limited copyright and database rights 2023. This product contains data created and maintained by Scottish Local Government. Other data including school performance and inspection data is supplied subject to the Open Government Licence v1.0 and any later versions currently in effect, via Ofsted, Department for Education, Department for Transport, Office for National Statistics and other central and local government departments. In providing search reports and services we will comply with the Search Code. For full details please read our Terms & Conditions.

Contains public sector information licensed under the Open Government Licence v1.0.

Propertistics

Log in to Propertistics

Propertistics

Forgot your details?