TN16 · 5.8 miles from Keston
Coutts Electrical Contractors cover Westerham from their Keston office — 5.8 miles away. The same engineers, the same accreditations and the same published guide prices as everywhere else on this map.
01 Services in Westerham
There is no reduced service list for Westerham. Solar and storage lead the work; the electrical trade underneath it is what makes the install safe.
02 The coverage picture
Every bar below is a real straight-line distance between two published sets of coordinates. Westerham is highlighted, and the three nearest towns are marked.
03 On the record
Local pages usually invent detail. These are the facts that trace to a real measurement, or to something Coutts Electrical publish themselves — each shown with where it came from.
Westerham town centre is 5.8 miles (9.3 km) from the Coutts Electrical office at Unit 2 Glebe Farm Business Park, Westerham Road, Keston.
Great-circle distance between published coordinates, computed in _tools/gen-areas.cjsWesterham falls inside the TN16 postcode area, within the South East London and Kent patch Coutts Electrical cover.
Royal Mail postcode area; coverage claim from couttselectrical.co.uk/areas-coveredA 4 kWp south-facing array at Westerham's coordinates is modelled at about 4,164 kWh a year — a long-term average for an unshaded roof at 35°, not a quote for any particular house.
PVGIS 5.3 (EU Joint Research Centre), SARAH3 database, 4 kWp south-facing at 35° with 14% system loss, long-term average for an unshaded roof; read 6 October 2026Westerham is on South Eastern Power Networks (SPN), the UK Power Networks licence area that handles G98/G99 connection applications for solar, batteries and EV chargers here (looked up for TN16 1AA).
Elexon grid supply point group for a postcode in the town, via the Octopus Energy industry lookup; read 6 October 20263,282 solar PV installations were registered across the Sevenoaks District at the end of 2025, up 84% on the 1,783 recorded at the end of 2020.
DESNZ, Renewable electricity by local authority 2014 to 2025, sheets "LA - Sites", "LA - Capacity" and "LA - Generation", as at end of 2025Those installations total 16.7 MW — an average of 5.1 kW each — and generated about 14,777 MWh in 2025.
DESNZ, Renewable electricity by local authority 2014 to 2025, sheets "LA - Sites", "LA - Capacity" and "LA - Generation", as at end of 2025That is roughly 6.7% of the 49,000 households DESNZ estimates for the Sevenoaks District, so most roofs in Westerham do not yet have panels.
DESNZ, Renewable electricity by local authority 2014 to 2025, sheets "LA - Sites", "LA - Capacity" and "LA - Generation", as at end of 2025The average house price in the Sevenoaks District was £538,714 in July 2026.
HM Land Registry UK House Price Index, July 2026 (latest month published at 6 October 2026)The South East region's mean installed cost in 2025/26 was £1,859 per kW for systems up to 4 kW and £1,721 per kW for 4–10 kW systems — a regional mean across all installers, not a Coutts price.
DESNZ Solar PV cost data 2025/26, "Regional costs (TIC)" sheet, mean total installed cost per kW; includes VAT where applicable and mixes domestic and non-domestic installsThe published guide pricing applies here as anywhere: a 4kWp array with 10kWh of battery capacity from £9,500, inclusive of VAT currently at 0%.
Guide-pricing table, couttselectrical.co.uk/solar-pvAgainst the three closest towns on this map — Sevenoaks (5.0 mi away, 4,192 kWh), Orpington (7.4 mi away, 4,172 kWh), West Wickham (8.4 mi away, 4,128 kWh) — Westerham's modelled 4 kWp yield of 4,164 kWh is within the same band as its neighbours. Roof pitch, orientation and shading matter far more than which of these towns a house is in.
PVGIS 5.3 (EU Joint Research Centre), SARAH3 database, 4 kWp south-facing at 35° with 14% system loss, long-term average for an unshaded roof; read 6 October 2026Sevenoaks, Orpington and West Wickham — the three closest towns to Westerham on this map — are all on South Eastern Power Networks (SPN) with it.
Elexon grid supply point group for a postcode in the town, via the Octopus Energy industry lookup; read 6 October 2026No customer name, job address or completed-installation claim is attached to Westerham anywhere on this page. Coutts Electrical's published reviews and gallery do not record locations, so tying either to a town would be an invention rather than a fact.
04 Electrical work in Westerham
The same four trades as everywhere on this map, with the Westerham numbers attached. Nearby: Sevenoaks, Orpington, West Wickham.
Coutts Electrical are on call 24 hours a day, 365 days a year, and where emergency attendance is requested an engineer is dispatched within 30 minutes. Westerham is 5.8 miles from the Keston office, so you get the engineers who cover the office's own patch. Call 0800 112 5050 or read about the emergency service.
Out-of-hours callouts, what to do first and how we reach Westerham: emergency electrician in Westerham.
Private landlords in the Sevenoaks District must hold an Electrical Installation Condition Report for every tenancy and put right any C1 or C2 finding within 28 days; the maximum penalty under the 2020 regulations is now £40,000. Commercial premises need periodic inspection too. Coutts carry out EICR testing for homes, landlords and businesses in Westerham, with the remedial work done by the same team.
Landlord, homeowner and business inspections in detail: EICR in Westerham.
PVGIS models about 4,164 kWh a year for a 4 kWp south-facing array here. 3,282 installations were registered across the Sevenoaks District at the end of 2025, averaging 5.1 kW each, and the South East regional mean installed cost was £1,859 per kW for systems up to 4 kW. Coutts' published guide price for a 4 kWp system with 10 kWh of battery is from £9,500, inclusive of VAT at 0%. See solar PV and battery storage.
Roofs, planning and yield: solar panels in Westerham. Storing it for the evening: battery storage in Westerham.
Home charge points in Westerham are fitted by OZEV-approved Coutts engineers and notified to South Eastern Power Networks (SPN), the network operator for this part of the map, as part of the install. Where a house already has panels, the charger is set up to use them. Details and the charge-point options are on the EV charging page.
Parking, grants and the network operator: EV charger installation in Westerham.
PVGIS models 4,164 kWh a year from a 4 kWp south-facing array in Westerham. On the assumptions below, that is worth about £607 a year on its own, or about £834 a year with a 10 kWh battery moving daytime generation into the evening. Coutts' guide price for a 4 kWp system with 10 kWh of battery is from £9,500, inclusive of VAT at 0% (the relief runs to 31 March 2027), confirmed by survey.
| Westerham, 4 kWp south-facing | Used in the home | Exported | First-year value |
|---|---|---|---|
| Panels only | 750 kWh | 3,414 kWh | £607 |
| With a 10 kWh battery | 2,332 kWh | 1,832 kWh | £834 |
Illustrative first-year figures, not a guarantee. Import at 26.32p/kWh (Ofgem energy price cap, 1 Oct – 31 Dec 2026, electricity, Direct Debit, GB average unit rate (26.32p/kWh)); export at 12p/kWh (Outgoing Octopus Smart Export Guarantee tariff, 12p/kWh variable (Octopus customers with a half-hourly export meter), read 15 Oct 2026); self-use from MCS MGD 003 Issue 2.0 self-consumption tables, 2,500–2,999 kWh use, occupied half the day; a 2,500 kWh-a-year home. The full worked example and payback range are on solar panel cost in Kent; the schemes that can lower the bill are on solar and battery grants in Kent.
05 The work
Photographs are Coutts Electrical's own, of their own completed work. Captions name the system type rather than a location, because the images are not tied to a named customer or town.
06 Customers
Reviews from the Google profile Coutts Electrical publish. They are not location-tagged, so none is presented as a job in this town.
Supplied and installed battery for my existing solar panels. Excellent communication throughout. Work completed effectively and all mess cleared up. App installed on my phone and ongoing support available if needed. Would recommend this firm.
Great service and price, Max follows up with paperwork and emails. So pleasant to find a proactive supplier
I have just had a Solar system installed by Coutts and the experience from start to finish has been first class. The support in designing a system to meet my requirements was excellent, the team that carried out the installation where first rate and the commissioning and explanation as to how I work with the new system was great. I would thoroughly recommend Max and his his team to provide a great service from start to finish, big thanks.
Three of the 30 reviews reproduced word for word on the reviews page.
07 Questions from Westerham
Every answer below is built from the sourced figures on this page.
Westerham is on South Eastern Power Networks (SPN), run by UK Power Networks. Any solar, battery or EV charger install is notified to them under the G98 or G99 process, which Coutts handle as part of every job.
PVGIS models about 4,164 kWh a year for a 4 kWp south-facing array at Westerham's coordinates, assuming an unshaded roof at 35°. East- or west-facing roofs produce less, and a survey is the only way to size a real system.
DESNZ recorded 3,282 solar PV installations in the Sevenoaks District at the end of 2025, up 84% since 2020 — about 6.7% of its estimated 49,000 households.
Most roof-mounted solar on a house in England is permitted development under Schedule 2, Part 14, Class A of the General Permitted Development Order 2015, subject to its conditions. Listed buildings and some conservation-area roofs facing a highway are treated differently, so check with Sevenoaks District council before work starts if either applies.
Yes. Coutts Electrical are on call 24 hours a day, 365 days a year, and where emergency attendance is requested an engineer is dispatched within 30 minutes. Westerham is 5.8 miles from the Keston office.
08 Start here
Tell us your postcode and roughly what you are after. We come out, survey it properly, and put a written price in front of you — with the VAT position confirmed on it.
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