Epsom & Ewell has an unusually clean piece of evidence about whether solar suits its homes: three completed rounds of the Solar Together group-buying scheme, with the results published by the borough council. Read alongside the census and the EPC data, it tells you most of what you need to know before you get a quote.
What three rounds delivered
Across the first three Solar Together rounds in Epsom & Ewell, 157 households had solar panels installed, 132 had battery storage and 18 had EV chargepoints, projected to save more than 145 tonnes of CO2 a year. That is a meaningful sample from one borough, and it tells you two things: the roofs here work, and batteries are a common add-on rather than a rarity.
The council has also put its own money where the data points. Since 2023 it has installed 266 kWp of solar on the Rainbow Leisure Centre, Bourne Hall and Epsom Playhouse roofs, alongside a target of carbon-neutral council operations by 2035.
Why the housing stock helps
Epsom & Ewell’s homes are unusually solar-friendly on paper. At Census 2021, of 31,321 households, 26.4% lived in detached houses and 34.9% in semi-detached — 61.3% detached or semi-detached — with 13.2% terraced and 20.9% in purpose-built flats. Owner-occupation stood at 74.0%.
Detached and semi-detached roofs usually carry the national-average array comfortably. The Energy Saving Trust puts a typical domestic system at about 4.5 kWp, around twelve panels, costing about £7,600 installed (their figure, updated 27 August 2026), and many Epsom roofs will take that or a little more. A survey confirms the count; it should also tell you plainly if a smaller system serves you better.
Where the honest caveat sits
The median EPC score across the Epsom and Ewell constituency is 67 — band D — with 46.2% of dwellings at band C or above. Pre-1929 homes have a median of just 59. For a draughty Edwardian or Victorian house, fabric improvements can be the better first spend, and solar earns its keep more once the basics are sorted. That is the kind of thing a survey should say out loud, and the kind of thing we will.
Group-buy or quote?
A Solar Together offer is a real offer, priced for the pool of registrants in a reverse auction. The sensible use of it is as one of two quotes: get an installer quote for exactly the same specification — panel count and wattage, inverter, battery capacity, warranty terms, scaffolding, grid notification — and compare the totals. Residential installations carry 0% VAT until 31 March 2027 whichever route you choose, reverting to 5% after.
Our solar panels Epsom page publishes a generation estimate for the town itself, run in the European Commission’s PVGIS 5.3 tool with the parameters shown, and the savings calculator lets you test your own usage against it. Both are there so you can judge any quote, ours included, before you commit to anything. Ewell has its own page too: solar panels Ewell covers the village’s three conservation areas, their Article 4 directions of February 2000, Bourne Hall’s 52.2 kWp roof array and a PVGIS estimate run for Ewell itself.
Sources: Epsom and Ewell Borough Council, climate change pages; Surrey County Council, Solar Together Surrey; ONS Census 2021 (TS044; How life has changed in Epsom and Ewell); ONS ad-hoc 2545 (EPC by constituency, published 18 December 2024); Met Office 1981–2010 averages (Wisley); Energy Saving Trust (updated 27 August 2026); HMRC VAT Notice 708/6.