Surrey · KT17 and KT18
Solar Panels Epsom: Installers for KT17 and KT18
Solar, battery storage and EV charging in Epsom — designed and installed by a local, MCS-certified team based in Portsmouth.
Quick answer
Epsom (KT17/KT18) is on UK Power Networks' grid - not SSEN, which covers Godalming and Farnham in the same county - and we file the G98 or G99 application for you. PVGIS models about 4,087 kWh a year for an unshaded 4kW south-facing array here.
Epsom sits at the northern edge of our coverage in Surrey, between the Downs and the London suburbs, best known for the racecourse on Epsom Downs. It is expensive housing with large roofs and high evening electricity use - electric cars and heat pumps are common here - which makes battery sizing the main design question rather than panel count.
The one thing worth knowing before anyone quotes you: Epsom is on UK Power Networks, while Godalming, Haslemere and Farnham in the same county are on SSEN. Epsom is about 51 miles from our Portsmouth base, so we plan Surrey surveys and installs as dedicated visits.
Solar in Epsom: the local detail
Grid connection (DNO)
Epsom is in the UK Power Networks (UKPN) area: our postcode checks put KT17 and KT18 in the South Eastern region. Surrey is split between two operators - western Surrey is SSEN - so the operator comes from the postcode, never the county. G98 covers smaller systems; G99 (applied for in advance) covers batteries and larger arrays, and SCSS files it.
Local planning authority
Epsom and Ewell Borough Council
Heritage & conservation
The national planning register returns no conservation area and no Article 4 direction at the town centre, so for most Epsom houses panels on the roof slope keep permitted development. Walls, balconies and roof enclosures fronting a highway are excluded, flat-roof arrays need prior approval, and listed buildings need consent checked first. Confirm your own address with Epsom and Ewell Borough Council.
Local housing stock
Large detached and semi-detached housing with substantial roofs, plus terraces nearer the town centre and flats around the station. HM Land Registry's July 2026 averages for Epsom and Ewell were £568,214 overall, £982,917 for detached houses, £649,771 for semi-detached, £491,420 for terraced homes and £300,022 for flats - the most expensive district we cover.
Typical roofs
PVGIS 5.3 gives a 4kW unshaded array about 4,087 kWh a year facing south, 3,283 facing east and 3,219 facing west - about 11% below the Sussex coast for the same kit. Mature trees are the usual constraint rather than roof area, so we fit per-panel optimisers where shade is unavoidable.
Sunlight & generation
PVGIS models about 4,087 kWh a year for a 4kW unshaded, south-facing array at a 35° pitch
Areas we cover in & around Epsom
Epsom Downs · Ewell · Stoneleigh · Ashtead · Tadworth · Banstead
About 51 miles from our Portsmouth base; Surrey surveys and installs are planned visits.
Our Epsom services
Solar Only
Generate clean energy, reduce your bills, and take the first step towards energy independence.
Solar & Battery
Maximise your energy, reduce costs and increase independence with a combined solar and battery system.
Battery Only
Flexible, efficient battery storage for every home — even without solar panels.
EV Charging
Charge at home, efficiently and cost-effectively with smart EV charging solutions.
Nearby areas
FAQ
Solar panels in Epsom: your questions
How much do solar panels cost in Epsom?
Do I need planning permission for solar panels in Epsom?
Which electricity network (DNO) covers Epsom?
How much electricity will solar panels generate in Epsom?
Which parts of Epsom do you cover?
Solar Panels Epsom: KT17/KT18 Yields, Why It Is UKPN, and What the Housing Stock Means
Start with the grid, because Surrey is split and getting it wrong delays a job. Epsom is on UK Power Networks' South Eastern network - our postcode checks put KT17 and KT18 in UKPN's region - while Godalming, Haslemere and Farnham, further west in the same county, are SSEN. Anyone who tells you “Surrey is UKPN” or “Surrey is SSEN” is guessing from the county rather than the postcode. It decides where the G98 notification or the G99 application goes, and it sets your Octopus export region: on 25 September 2026 Flux paid 29.79p per kWh here for exports between 4pm and 7pm, about 10.24p through the day and 5.05p between 2am and 5am, against a flat 12p on Outgoing Octopus.
On output, Epsom is the furthest north we quote and the model shows it. PVGIS 5.3 puts a 4kW unshaded, south-facing array here at about 4,087 kWh a year, against 4,594 kWh on the Sussex coast at Arundel - roughly 11% less for identical kit. East-facing it models at about 3,283 kWh and west-facing at 3,219 kWh. Expect around 501 kWh in June and 137 kWh in December. Savings figures borrowed from coastal case studies will overstate what an Epsom roof does, which is why we model your own roof rather than quoting a regional average.
The housing stock is the most expensive on our patch, and that changes the specification rather than the technology. HM Land Registry put the Epsom and Ewell average at £568,214 in July 2026, with detached homes at £982,917, semi-detached at £649,771, terraced at £491,420 and flats at £300,022. Large detached roofs take 14 to 16 panels comfortably, and at that size a 13.5kWh battery pays for itself faster because the evening load is bigger - electric cars and heat pumps are common in this band. The practical constraint is usually trees rather than roof area, so per-panel optimisers are standard where shade is unavoidable.
On planning, the national register returns no conservation area and no Article 4 direction at the town centre, so for most Epsom houses panels on the roof slope keep permitted development under the rules as amended on 27 August 2026. Walls, balconies and roof enclosures fronting a highway are the exception, a flat-roof array needs prior approval, and a listed building needs consent checked first - Epsom and Ewell Borough Council is the authority to confirm your specific address with. Epsom is about 51 miles from our Portsmouth base, so Surrey work is a planned visit; for the county view see solar panels Surrey.
- ✓Epsom is UK Power Networks (KT17/KT18) while Godalming, Haslemere and Farnham in the same county are SSEN
- ✓PVGIS 5.3: a 4kW unshaded south-facing array ≈ 4,087 kWh a year (east 3,283 · west 3,219) - about 11% below the Sussex coast
- ✓Export on 25 Sep 2026 (region J): Flux 29.79p (4-7pm) / 10.24p day / 5.05p (2-5am); Outgoing Octopus 12p
- ✓HM Land Registry, July 2026 (Epsom and Ewell): average £568,214; detached £982,917; flats £300,022
- ✓No conservation area or Article 4 direction returned at the town centre on the national planning register
Is Epsom on SSEN or UK Power Networks?+
UK Power Networks. KT17 and KT18 sit in UKPN's South Eastern region. Surrey is split between two operators - Godalming, Haslemere and Farnham are SSEN - so the operator has to come from the postcode, never from the county. We confirm it before any application and file the G98 or G99 ourselves.
How much do solar panels generate in Epsom?+
PVGIS models about 4,087 kWh a year for a 4kW unshaded, south-facing array at a 35 degree pitch, with roughly 501 kWh in June and 137 kWh in December. That is about 11% below the figure for the same array on the Sussex coast, so be wary of savings estimates quoted for coastal installs.
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