Solar Panel Installation in London
Cut your electricity bills by up to 90% with premium solar & battery, expertly installed across London and Greater London — from Croydon to Bromley, Ealing to Enfield.
Big Solar Savings for London Homes
Solar panels generate electricity from both direct sunlight and the diffuse daylight that reaches them through clouds. They produce more power in bright sunlight, but they still work on cloudy days. A battery can store daytime generation for the evening.
With energy bills climbing everywhere, a Spark system locks in decades of lower, more predictable costs for London homeowners — backed by savings we validate independently through EPVS.
Solar Generation in London
London sits in Greater London, which sees around 1,541 hours of sunshine a year — comfortably enough daylight for solar to perform strongly, even through shorter winter days. Many local homes are traditional pitched-roof terraces and semis that suit panel layouts well — we just check for conservation-area rules first. Across neighbourhoods like Croydon, Bromley and Ealing, a well-designed system with battery storage turns that daylight into lower bills all year round.
Figures are regional averages for guidance, based on typical MCS/PVGIS irradiance for Greater London. Your exact generation depends on your roof orientation, pitch and shading, and is confirmed at your free survey.
Areas We Cover Around London
We install right across the city and surrounding Greater London. Don't see your area? We almost certainly still cover it.
Spark Installs Around London
Explore Spark solar & battery installations across London and the surrounding area. Pins show installation totals at approximate postcode district centres, not individual homes.
Spark’s records show 35 installations within 25 miles of central London, including the postcode districts closest to the centre: E14 (1), IG1 (1), RM8 (1), RM10 (1), IG10 (1), TW14 (1) (as of September 2026).
Solar in London: Your Questions
Do solar panels work well in London?
Solar panels generate electricity from both direct sunlight and the diffuse daylight that reaches them through clouds. They produce more power in bright sunlight, but they still work on cloudy days. A battery can store daytime generation for the evening.
How much can I save in London?
Most homeowners cut their electricity bills by up to 90%. Your EPVS-validated savings estimate is calculated after a free home survey based on your roof and usage. Savings are forecasts, not guaranteed amounts.
Do you cover my part of London?
We install right across London and the wider region. If your area isn't listed, get in touch — we almost certainly still cover it.
How long does installation take?
Most London installations are completed in a single day. Across our installs, the median time from signing to install day is 19 days, depending mainly on the size of your inverter: see how long installation takes.
How much electricity will solar panels generate in London?
In Greater London you can expect around 1,000 kWh a year for every kWp installed, so a typical 4 kWp London system generates roughly 4,000 kWh annually — enough to cover a large share of a household’s electricity, especially paired with a battery.
Do I need planning permission for solar in London?
For most London homes solar is permitted development and needs no application. In a conservation area or on a listed building extra rules can apply — we check this for you and fit a discreet, all-black array to suit.
What Spark Customers Say
“Our surveyor was excellent — clear on exactly what was included and he followed up every step. The installation team were professional and polite. I'd happily recommend Spark.”
“Mark visited twice until we had a design, price and payment structure that suited us. Spark have exactly the right attitude.”
“Amazing service. The work was carried out really well and I'm very happy with the final result. Started saving money from the first day.”
Get Your Free London Solar Quote
A local Spark expert will design your system and confirm your savings — no obligation, no pushy sales.
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