How We Calculate UK Solar Costs

This page explains the approach SolarCostsUK uses to form realistic UK solar panel cost and battery storage price ranges — so you can understand what sits behind the numbers.

What we mean by “typical UK cost ranges”

Solar quotes vary widely. Our aim is not to publish a single “average” that misleads, but to show realistic ranges that reflect the most common UK outcomes across different homes and installations.

For context, start with the main guide: Solar Panel Costs UK.

The main factors that change solar quotes

Roof and installation complexity

Scaffolding needs, access limitations, roof shape and the number of roof faces all influence labour time and safety requirements.

Equipment selection

Panel efficiency, warranty length, inverter type (string, hybrid or micro-inverters) and monitoring capability all affect pricing and long-term value.

System size and design goals

Larger systems cost more overall but can reduce cost per kW. Good design (orientation and shading) improves usable output.

Battery integration

Batteries add cost but can increase self-use and work well with smart tariffs. See: Battery storage costs .

How we recommend you compare solar quotes

Comparing total price alone is rarely helpful. We recommend comparing:

  • System size (kW) and expected annual generation (kWh)
  • Panel and inverter models with warranty terms
  • What is included (scaffolding, bird protection, monitoring, aftercare)
  • Battery usable capacity and warranty information (if included)

Use the practical checklist in: What to check in a solar quote .

VAT and SEG notes

VAT treatment and export payments can affect final figures. Always confirm what is included and which assumptions are used in any “payback” claims.

We highlight these areas in: VAT & SEG .

Contact and corrections

If you spot an error or would like to suggest an improvement, please contact us here: Contact SolarCostsUK.