Hertfordshire
Solar panels in Borehamwood, priced before anyone visits.
Twelve panels (6.36 kWp) here make about 6,460 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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Sunlight in Borehamwood, in numbers
PVGIS puts Borehamwood at 1,015 kWh per kWp a year, level with our Hertfordshire county estimate. 68% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.4 |
| February | 53.1 |
| March | 88.2 |
| April | 113 |
| May | 121 |
| June | 122 |
| July | 124 |
| August | 111 |
| September | 95.5 |
| October | 65.7 |
| November | 46.6 |
| December | 36.1 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,015 kWh per kWp in Borehamwood against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Borehamwood 10% above it.
How Borehamwood compares
Among the places we publish figures for, Borehamwood is one of 27 Hertfordshire towns we track, and it ranks 21st of 27 for solar yield. It is a medium town in the House of Commons Library classification, with 40,571 residents, and its roofs see 2.78 peak sun hours a day across the year. That drives the standard 12 panel model to 6,455 kWh of generation, of which around 5,519 kWh is exported at 12p for £662 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
These are starting numbers, not a quote. The calculator below opens on Borehamwood'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 here go through Hertsmere; nationally, the House of Commons Library classes Borehamwood as a medium town.
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 Borehamwood (51.65826, -0.27261), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
UK Power Networks and your Borehamwood connection
Borehamwood is served by UK Power Networks: the town's centre falls inside its East England licence area on NESO's boundary map.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to UK Power Networks within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
Larger systems go through G99 instead, applied for before installation. On timing: 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 Borehamwood
A heat pump in Borehamwood
In December, the darkest month here, 12 panels in Borehamwood make about 230 kWh. That is when a heat pump runs hardest, so its running cost in Borehamwood comes down to the tariff and the flow temperature rather than the roof.
Grant support in England comes from the Boiler Upgrade Scheme: £7,500 for an air source or ground source heat pump, £2,500 for air-to-air, and an extra £1,500 until March 2027 where the home is heated by oil or LPG off the gas grid (gov.uk, checked 28 September 2026).
Charging an EV in Borehamwood
Summer is where a car earns its place. In July, 12 panels in Borehamwood make about 790 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
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).
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Borehamwood
The same sourced benchmarks apply in Borehamwood as everywhere we cover: honest repair pricing and what a service should include.
Borehamwood solar questions
How much electricity do solar panels make in Borehamwood?
About 6,460 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Borehamwood: 1,015 kWh per kWp, or 2.78 peak sun hours a day on average. July is the strongest month, at about 790 kWh.
What does a typical solar system cost in Borehamwood?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Borehamwood, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,460 kWh a year. The final figure comes from your roof on the design call.
Which DNO covers Borehamwood, and what does it need from me?
UK Power Networks covers Borehamwood. A home system of up to 3.68kW per phase is notified to UK Power Networks within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. 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.
What happens to the solar I do not use in Borehamwood?
Around £662 a year at 12p per kWh, for the roughly 5,519 kWh a 12-panel system in Borehamwood exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How much solar does Borehamwood get in December?
December is the low point: about 230 kWh from a 12-panel system in Borehamwood, on PVGIS data, rising to 790 kWh in July. From November to February the same system makes about 1,110 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Borehamwood 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 Borehamwood |
|---|---|---|
| Borehamwood | 1,015 | this town |
| Radlett | 1,018 | +3 kWh |
| Bushey | 1,024 | +9 kWh |
| Barnet | 1,016 | +1 kWh |
| London Colney | 1,022 | +7 kWh |
| Potters Bar | 1,026 | +11 kWh |
| Harrow | 1,026 | +11 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 Borehamwood: Solar panels in Borehamwood from OVO Solar & Battery
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Further reading for Borehamwood
Sourced, dated and written by us. The same ground we cover on your free call.
G98 vs G99: the 28-day form and the eight-week wait, in plain English
One number on your quote decides between a formality and an eight week wait.
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 →Charging an EV from your own solar
Every surplus kWh is 3.6 to 5 miles. Whether that beats a 7p overnight rate is arithmetic.
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 →EV tariffs compared: the cheapest overnight windows
Overnight rates of 6.99p to 9p against a 26.32p capped average, compared.
Read the guide →What MCS certification actually is, and why your export payments depend on it
The badge that decides whether your solar earns export payments. It cannot be added later.
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.