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’s behind the numbers.

What we mean by “typical UK cost ranges”

Solar quotes vary. Our goal is not to publish one “average” that misleads, but to show cost ranges that reflect the most common UK outcomes across different homes and installations.

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 number of roof faces all influence labour time and safety requirements.

Equipment selection

Panel efficiency, warranty length, inverter type (string/hybrid/micro) and monitoring capabilities change pricing and long-term value.

System size and design goals

Larger systems cost more overall, but can reduce cost per kW. A properly designed layout (orientation/shading) can deliver better usable output.

Battery integration

Batteries introduce additional cost but can increase self-use and may work well with smart tariffs. See the battery section within the main guide: Battery storage costs.

How we recommend you compare quotes

Comparing “total price” alone is not enough. Compare:

  • System size (kW) and expected annual generation (kWh)
  • Panel + inverter models and warranty terms
  • What’s included (scaffolding, bird protection, monitoring, aftercare)
  • Battery usable capacity (kWh) and warranty/cycle guidance (if included)

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

VAT and SEG notes

VAT treatment and export payments can affect the numbers. Always confirm what’s 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 want to suggest an improvement, please contact us here: Contact SolarCostsUK.