Hertfordshire
Solar panels in Hertford, sized to your roof.
About 6,510 kWh a year from 12 panels in Hertford, £6,360 installed, with your system designed on a free 30-minute video call.
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- Installed by our MCS-certified, fully insured teams
What a roof in Hertford can generate
From 37.3 kWh per kWp in December to 124.9 in July: a roof in Hertford makes 3.3 times as much in its best month as in its darkest, and 1,024 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.1 |
| February | 53.8 |
| March | 88.9 |
| April | 114 |
| May | 122 |
| June | 123 |
| July | 125 |
| August | 112 |
| September | 97.2 |
| October | 66.3 |
| November | 46.9 |
| December | 37.3 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,024 kWh per kWp in Hertford against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Hertford 11% above it.
How Hertford compares
Among the places we publish figures for, Hertford is one of 27 Hertfordshire towns we track, and it ranks joint 5th of 27 for solar yield. It is a medium town in the House of Commons Library classification, with 30,269 residents, and its roofs see 2.81 peak sun hours a day across the year. That drives the standard 12 panel model to 6,513 kWh of generation, of which around 5,576 kWh is exported at 12p for £669 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Hertford'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.
Hertford sits within East Hertfordshire, its local planning authority, and the House of Commons Library classes it 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.
Generation is modelled from PVGIS satellite data for Hertford's own coordinates (51.79876, -0.07994), 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 Hertford network
The distribution network operator (DNO) for Hertford is UK Power Networks, which runs the East England licence area.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, UK Power Networks only has to be told within 28 days after the system is commissioned.
Anything bigger is a G99 case and is applied for 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.
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 Hertford
A heat pump in Hertford
Solar and a heat pump pull in opposite directions through the year: Hertford's roofs make 1,130 kWh from November to February on a 12-panel system, and 3,060 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
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 Hertford
A 12-panel roof in Hertford makes about 790 kWh in July. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
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 Hertford
Guidance is nationwide, so the benchmarks hold in Hertford: repair costs, service scope, and when the inverter is the real fault.
Solar in Hertford: your questions answered
What could a roof in Hertford generate?
PVGIS puts a roof in Hertford at 1,024 kWh per kWp a year, 2.81 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,510 kWh a year, most of it between April and September.
What would 12 solar panels cost in Hertford?
£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 Hertford differs is output: about 6,510 kWh a year from that system.
Do I need permission from the DNO for solar in Hertford?
Usually not in advance. UK Power Networks, the network operator for Hertford, 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 Hertford?
It is exported. With typical use and no battery, about 5,576 kWh of the 6,510 kWh a 12-panel system makes in Hertford goes to the grid, around £669 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 Hertford?
Yes, at a lower level. PVGIS gives Hertford 37.3 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 790 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Hertford compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Hertford.
| Town | kWh per kWp a year | vs Hertford |
|---|---|---|
| Hertford | 1,024 | this town |
| Ware | 1,018 | −6 kWh |
| Hoddesdon | 1,018 | −6 kWh |
| Welwyn Garden City | 1,021 | −3 kWh |
| Cheshunt | 1,014 | −10 kWh |
| Hatfield | 1,022 | −2 kWh |
| Waltham Cross | 1,012 | −12 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 Hertford: Solar panels in Hertford 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.
Are solar panels worth it in 2026? Here is the actual maths
Roughly £1,000 per kWp installed, offsetting electricity at 26.32p a unit. The real arithmetic.
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 →How time of use charging windows actually work
How a cheap overnight window is metered and billed, and what a battery does inside it.
Read the guide →Which homes suit a heat pump, and which need work first
The trial data says no property type is unsuitable. Design quality decides the outcome.
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 →How to check an MCS certificate is genuine, before the deposit leaves your account
A logo proves nothing. Certification is business specific, technology specific and checkable.
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.