Luton sits in the Midlands baseline zone at the UK average for solar irradiance. A 4kW system generates around 3,400 kWh a year. South Bedfordshire is close enough to the South-East to benefit from competitive installer pricing from both the Home Counties and Midlands markets. Luton's proximity to London means elevated electricity costs, strengthening the solar case.
Select all that apply if your panels will span multiple roof faces.
Already have a battery or thinking of adding one? Include it to see how it affects your payback.
Generation uses a UK baseline of 850 kWh per kWp installed, adjusted for your region's solar irradiance, roof orientation, pitch and shading. South-facing roofs at 30–45° hit the baseline; east/west takes a 15% hit; north loses a third.
Self-consumption defaults to 40% without a battery — the rest exports to the grid. A battery raises self-consumption progressively up to 80% at ~15 kWh capacity.
Savings = self-consumed kWh × your import rate, plus exported kWh × your SEG rate. Apply 0.5% panel degradation per year over the 25-year warranty.
Install cost reflects 2026 UK ranges with 0% VAT (in force until April 2027). Battery cost: roughly £350/kWh installed plus a £2k base.
This is an estimate. Actual generation and quotes vary — get a site survey from an MCS-certified installer before committing.
Use the official MCS register to find certified solar installers in your area. MCS certification is required for SEG payments and grant eligibility.
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