Free Home Energy Tool

Solar Panel Cost Calculator

Estimate the indicative upfront cost of a UK rooftop solar installation, then use the result in our savings and payback calculator. All prices are editable assumptions, not market quotations.

Build Your Estimate

System Size (kWp)Installed Solar Cost (£ per kWp)Optional Battery and Installation (£)Other Work / Scaffolding Additions (£)

Indicative Cost Breakdown

Solar system—

Battery + extras—

Total estimate—

The initial £1,500/kWp and £750 additional-work figures are purely illustrative defaults, not independently verified current UK installer prices. Replace them with your own quotations. Do not add VAT automatically: its treatment depends on the installation and current rules.

Continue to Savings & Payback →

What Changes Your Quote?

Roof condition, scaffolding, installation complexity, inverter selection, labour, battery size, panel specifications and electrical upgrades can all change actual costs. Request itemised quotes for your property.

Read the Solar Panels Guide

Your Solar Planning Journey

Size → Cost → Savings

STEP 01How Much Solar Do I Need?

Estimate electricity use, system capacity and panel count.

STEP 02What Will It Cost?

Calculate an editable installation estimate.

STEP 03What Could I Save?

Estimate annual benefit and payback.