Essex
Solar panels in Waltham Forest, with the numbers shown.
A 12-panel roof in Waltham Forest makes about 6,500 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Waltham Forest's solar year
Waltham Forest's best month is July, at 124.8 kWh per kWp; December manages 37.9. Over the year that comes to 1,022 kWh per kWp, 4% below our Essex county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 40.1 |
| February | 53.3 |
| March | 88 |
| April | 114 |
| May | 121 |
| June | 122 |
| July | 125 |
| August | 111 |
| September | 96.3 |
| October | 66.5 |
| November | 47.1 |
| December | 37.9 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Waltham Forest makes 1,022 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Waltham Forest is 10% above it.
How Waltham Forest compares
Waltham Forest is one of 46 Essex towns we track, and it ranks 45th of 46 for solar yield. The House of Commons Library settlement classification puts it in the core city class, with a population of 279,373, which makes it one of the largest places we publish figures for. Scale changes nothing about the physics: PVGIS gives a roof here 1,022 kWh per kWp a year, 2.80 peak sun hours a day averaged across the seasons, and on the 12p scenario about £247 of the year one benefit comes from solar you use yourself, with export income adding £668.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Waltham Forest's own yield, and prices a 12 panel system at £6,360 installed before any battery. Your free design call reworks every number for your actual roof, its shading and your usage.
Planning applications in Waltham Forest go to its own council, and the House of Commons Library classes it as a core city.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
Price this for your roof
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
The figures use PVGIS for the centre of Waltham Forest (51.59317, -0.01122), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
Who runs the grid in Waltham Forest
UK Power Networks owns and runs the local electricity network in Waltham Forest, as part of its London licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means UK Power Networks is notified within 28 days of switch-on rather than asked beforehand.
A bigger inverter or battery output needs a G99 application in advance. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Heat pumps and EV charging in Waltham Forest
A heat pump in Waltham Forest
A heat pump does most of its work from November to February. Over those four months, 12 panels in Waltham Forest make about 1,130 kWh, against 3,050 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
The Boiler Upgrade Scheme, open in England and Wales, takes £7,500 off an air source or ground source heat pump, or £2,500 off an air-to-air unit. Homes on oil or LPG with no mains gas get £1,500 more until March 2027 (gov.uk, checked 28 September 2026).
Charging an EV in Waltham Forest
From April to September, 67% of a Waltham Forest roof's yearly output arrives, peaking at about 790 kWh in July on 12 panels. A car parked at home in daylight can soak up what the house, at around 70 kWh of daytime use that month, cannot.
The calculator above includes a 7.4kW smart charger from £1,100 installed. Renters and flat owners with off-street parking can claim 75% of a chargepoint's cost, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026).
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Waltham Forest
Faults, servicing and ageing inverters follow the same economics in Waltham Forest as anywhere else, and the guides below price them plainly.
Solar in Waltham Forest: your questions answered
What does a solar panel system produce in Waltham Forest?
Each kWp of panels in Waltham Forest makes 1,022 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,500 kWh, from about 240 kWh in December up to 790 kWh in July.
How much are solar panels in Waltham Forest?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Waltham Forest before a battery. What Waltham Forest changes is the return, about 6,500 kWh a year from that system, and your design call prices your actual roof.
Would a system in Waltham Forest need approval from the network operator?
Waltham Forest is on UK Power Networks' network (London licence area). Systems up to 3.68kW per phase of inverter output follow G98: UK Power Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Waltham Forest?
With typical use and no battery, a 12-panel system in Waltham Forest exports about 5,563 kWh a year. At 12p per kWh that is roughly £668; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Is solar worth it in Waltham Forest in winter?
It works, but the year is lopsided. 67% of a Waltham Forest roof's output lands between April and September; the four months from November to February give about 1,130 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Waltham Forest compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp a year | vs Waltham Forest |
|---|---|---|
| Waltham Forest | 1,022 | this town |
| Buckhurst Hill | 1,026 | +4 kWh |
| Redbridge | 1,035 | +13 kWh |
| Hackney | 1,025 | +3 kWh |
| Chigwell | 1,032 | +10 kWh |
| Haringey | 1,024 | +2 kWh |
| Enfield | 1,025 | +3 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Waltham Forest: Solar panels in Waltham Forest from OVO Solar & Battery
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Further reading for Waltham Forest
Sourced, dated and written by us. The same ground we cover on your free call.
DNO application timescales, network by network: from a G98 notification to a G99 approval
Fit and notify within 28 days, or wait ten working days to 45 for a yes. System size decides which.
Read the guide →Sigenergy SigenStor review: the 5-in-1 tower examined
The 5-in-1 tower reviewed by a site that does not sell it, warranty arithmetic included.
Read the guide →The main home EV chargers, compared on what actually differs
Eight popular UK home chargers on cable, connectivity, warranty and tariff integration.
Read the guide →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-off.
Read the guide →Why tariff choice moves payback more than kit choice
Identical kit, five times the export income. The tariff decision worked through with August 2026 rates.
Read the guide →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.