Kent
Solar panels in Greenwich, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,590 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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What a roof in Greenwich can generate
From 37.5 kWh per kWp in December to 128.3 in July: a roof in Greenwich makes 3.4 times as much in its best month as in its darkest, and 1,036 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.1 |
| February | 51.9 |
| March | 88.4 |
| April | 116 |
| May | 124 |
| June | 124 |
| July | 128 |
| August | 114 |
| September | 98 |
| October | 68.2 |
| November | 47.3 |
| December | 37.5 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Our GB average is 925 kWh per kWp a year, the mean of the 85 county PVGIS estimates we publish; at 1,036, Greenwich is 12% above it.
How Greenwich compares
Greenwich is one of 44 Kent towns we track, and it ranks 41st of 44 for solar yield. The House of Commons Library settlement classification puts it in the core city class, with a population of 298,287, which makes it one of the largest places we publish figures for. Scale changes nothing about the physics: PVGIS gives a roof here 1,036 kWh per kWp a year, 2.84 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 £678.
These are starting numbers, not a quote. The calculator below opens on Greenwich's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Planning applications in Greenwich 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.
Generation is modelled from PVGIS satellite data for Greenwich's own coordinates (51.47258, 0.05315), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate; the methodology is on our help page.
Connecting solar to the Greenwich network
UK Power Networks owns and runs the local electricity network in Greenwich, as part of its London licence area.
What decides the paperwork is the inverter and battery output, not the number of panels. Up to 3.68kW per phase, a system follows G98: UK Power Networks is notified within 28 days of commissioning and nothing has to be approved first.
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.
Adding a heat pump or an EV charger in Greenwich
A heat pump in Greenwich
Solar and a heat pump pull in opposite directions through the year: Greenwich's roofs make 1,120 kWh from November to February on a 12-panel system, and 3,120 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
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 Greenwich
From April to September, 68% of a Greenwich roof's yearly output arrives, peaking at about 820 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.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds a 7.4kW smart charger from £1,100 installed.
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 Greenwich
Guidance is nationwide, so the benchmarks hold in Greenwich: repair costs, service scope, and when the inverter is the real fault.
Common questions about solar in Greenwich
What could a roof in Greenwich generate?
PVGIS puts a roof in Greenwich at 1,036 kWh per kWp a year, 2.84 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,590 kWh a year, most of it between April and September.
What would 12 solar panels cost in Greenwich?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Greenwich differs is output: about 6,590 kWh a year from that system.
Do I need permission from the DNO for solar in Greenwich?
Usually not in advance. UK Power Networks, the network operator for Greenwich, only needs a G98 notification within 28 days of commissioning for systems up to 3.68kW per phase. Bigger inverter or battery outputs need G99 approval first. 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. "See our DNO explainer.
How much would export pay on a system in Greenwich?
It is exported. With typical use and no battery, about 5,652 kWh of the 6,590 kWh a 12-panel system makes in Greenwich goes to the grid, around £678 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Do solar panels work in winter in Greenwich?
Yes, at a lower level. PVGIS gives Greenwich 37.5 kWh per kWp in December and 39.1 in January, so a 12-panel system makes about 240 kWh and 250 kWh in those months, against 820 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Greenwich compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Greenwich.
| Town | kWh per kWp a year | vs Greenwich |
|---|---|---|
| Greenwich | 1,036 | this town |
| Lewisham | 1,026 | −10 kWh |
| Bexley | 1,042 | +6 kWh |
| Newham | 1,027 | −9 kWh |
| Tower Hamlets | 1,023 | −13 kWh |
| Southwark | 1,029 | −7 kWh |
| Barking and Dagenham | 1,040 | +4 kWh |
Same PVGIS v5.2 query for every town. Small differences are within year-to-year weather; more than about 30 kWh per kWp apart is geography.
Also for Greenwich: Solar panels in Greenwich from OVO Solar & Battery
See a number before you speak to anyone
Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels increase home value? What the actual data shows
The largest UK study found a 6.1% to 7.1% sale price premium. Here is the full picture.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
Read the guide →What an EV charger installation actually involves
Main fuse, DNO notification, load balancing and the paperwork. What really happens.
Read the guide →How an air source heat pump actually works
It moves heat rather than making it. The cycle, the efficiency numbers and the trade-offs.
Read the guide →Which tariffs are actually built for battery charging
A battery buys cheap and uses dear. The tariff decides how much that is worth.
Read the guide →Your MCS certificate: what it shows, when it arrives, and how a Smart Export Guarantee supplier uses it
The document your export payments hang on. Who issues it, what it shows, and how to get a copy.
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.