Solar Panels in Hertfordshire
A typical 10-panel (4 kWp) solar system in Hertfordshire costs £6,000–£7,800 with 0% VAT and makes about 3,800 kWh a year, 3% above the UK average. That saves around £700 a year and pays back in 9–11 yrs.
366 MCS-certified solar installers currently listed serving Hertfordshire, 69 based in the county, averaging 4.7/5 on Google across 15,908 reviews. Browse solar panel installers in Hertfordshire →
How much do solar panels cost in Hertfordshire?
Installed prices with 0% VAT, with output, savings and payback worked out for Hertfordshire's solar yield of 950 kWh per kWp (3% above the UK average).
| System | Installed cost | Output in Hertfordshire | Saving a year | Payback |
|---|---|---|---|---|
| 3 kWp (7 panels) | £5,000–£6,400 | ~2,850 kWh | ~£520 | 10–12 yrs |
| 4 kWp (10 panels) | £6,000–£7,800 | ~3,800 kWh | ~£700 | 9–11 yrs |
| 5 kWp (12 panels) | £7,200–£9,200 | ~4,750 kWh | ~£870 | 8–10 yrs |
Savings assume 40% of the output is used at home at the Ofgem price cap and the rest exported at the average Smart Export Guarantee rate. See UK solar panel costs for battery prices and the big suppliers' published prices, or work out your own figures with the solar calculator.
How much electricity do solar panels make in Hertfordshire?
A south-facing system in Hertfordshire makes about 950 kWh per kWp a year, against a UK average of 920, with around 1,540 hours of sunshine a year (#21 of 102 UK areas). Across the county, output ranges from 935 kWh/kWp in Tring to 966 kWh/kWp in Bishops Stortford.
| Town | Solar yield | 4 kWp output a year |
|---|---|---|
| Bishops Stortford | 966 kWh/kWp | ~3,864 kWh |
| Royston | 961 kWh/kWp | ~3,844 kWh |
| Potters Bar | 957 kWh/kWp | ~3,828 kWh |
| Baldock | 955 kWh/kWp | ~3,820 kWh |
| Hertford | 954 kWh/kWp | ~3,816 kWh |
| Bushey | 954 kWh/kWp | ~3,816 kWh |
| Hatfield | 953 kWh/kWp | ~3,812 kWh |
| St Albans | 953 kWh/kWp | ~3,812 kWh |
| Stevenage | 950 kWh/kWp | ~3,800 kWh |
| Hemel Hempstead | 949 kWh/kWp | ~3,796 kWh |
Solar panel grants and schemes in Hertfordshire
Every home gets 0% VAT on solar panels and batteries until 31 March 2027, and can earn from exported power through the Smart Export Guarantee. On top of that, these schemes can help eligible households in Hertfordshire:
Warm Homes: Local Grant
Run by your local council for homes rated EPC D to G on lower incomes. It can fund solar panels, insulation and heat pumps.
How it worksWarm Homes Loan Scheme
Government-backed lower-interest loans of up to £15,000 for solar panels and up to £15,000 for a battery, through participating lenders.
How it worksDo you need planning permission in Hertfordshire?
Usually not. Most roof panels on houses are permitted development, so no planning application is needed. Listed buildings need listed building consent, and conservation areas or Article 4 directions can add limits, so check with the council if either applies. Planning rules in full.
St Albans: Conservation areas
St Albans district has 19 conservation areas, including St Albans, Harpenden, Redbourn, Sandridge and Wheathampstead. Parts of some are covered by Article 4 directions.
St Albans conservation areas
Who connects solar panels to the grid in Hertfordshire?
UK Power Networks is the electricity network operator for Hertfordshire. Your installer deals with them: a system up to 3.68 kW per phase (about 8 panels) only needs a notification after fitting (G98), while a larger system or a big battery needs approval before it goes in (G99), which can add a few weeks. Check your operator by postcode.
Top-rated solar installers in Hertfordshire
366 MCS-certified installers serve Hertfordshire (69 based in the county), averaging 4.7/5 on Google across 15,908 reviews. These are the highest rated with at least 10 reviews.
Now EV Ltd
bedfordshire, buckinghamshire, hertfordshire +2 more
Chiltern Solar Limited t/a Chiltern Solar
bedfordshire, berkshire, buckinghamshire +3 more
Everyone's Energy UK Limited
buckinghamshire, cambridgeshire, essex +4 more
Solar panels in Hertfordshire: common questions
How much do solar panels cost in Hertfordshire?
£6,000–£7,800 for a typical 4 kWp (10-panel) system with 0% VAT, £5,000–£6,400 for 3 kWp and £7,200–£9,200 for 5 kWp. A battery adds about £2,500–£4,000 for 5 kWh.
How much electricity do solar panels generate in Hertfordshire?
About 950 kWh per kWp a year, 3% above the UK average of 920. A 4 kWp system makes about 3,800 kWh a year. Across the county, output ranges from 935 kWh/kWp in Tring to 966 kWh/kWp in Bishops Stortford.
Are there solar panel grants in Hertfordshire?
Warm Homes: Local Grant, Warm Homes Loan Scheme, ECO4 can help with the cost for eligible homes. Everyone gets 0% VAT on installation until 31 March 2027, and export payments through the Smart Export Guarantee.
Do I need planning permission for solar panels in Hertfordshire?
Usually not: most roof panels on houses are permitted development. Listed buildings need consent, and conservation areas or Article 4 directions can add limits, for example in St Albans, so check with the council if either applies.
Who is the electricity network operator in Hertfordshire?
UK Power Networks is the network operator for Hertfordshire. Your installer notifies them: systems up to 3.68 kW per phase just notify after fitting (G98), larger ones need approval first (G99).
Find Solar Installers in Hertfordshire
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Solar Installer Reviews in Hertfordshire
Read verified Google and Trustpilot reviews of solar installers serving Hertfordshire.
Solar Panel Savings Calculator
Estimate your savings, cost, and payback period for a system in Hertfordshire using regional solar data.
Commercial Solar in Hertfordshire
Costs, capital allowances, and payback for business and warehouse solar systems in Hertfordshire.
Farm Solar in Hertfordshire
Agricultural solar for dairy, poultry, and arable farms in Hertfordshire, with capital allowances and FETF grants.
Solar Panels by Town in Hertfordshire
Explore detailed solar panel information for towns and cities in Hertfordshire.
Hatfield
Solar panels in Hatfield
Hemel Hempstead
Solar panels in Hemel Hempstead
Hertford
Solar panels in Hertford
St Albans
Solar panels in St Albans
Stevenage
Solar panels in Stevenage
Watford
Solar panels in Watford
Welwyn Garden City
Solar panels in Welwyn Garden City
Hitchin
Solar panels in Hitchin
Letchworth
Solar panels in Letchworth
Cheshunt
Solar panels in Cheshunt
Hoddesdon
Solar panels in Hoddesdon
Ware
Solar panels in Ware
Bishops Stortford
Solar panels in Bishops Stortford
Borehamwood
Solar panels in Borehamwood
Potters Bar
Solar panels in Potters Bar
Rickmansworth
Solar panels in Rickmansworth
Harpenden
Solar panels in Harpenden
Berkhamsted
Solar panels in Berkhamsted
Tring
Solar panels in Tring
Bushey
Solar panels in Bushey
Royston
Solar panels in Royston
Baldock
Solar panels in Baldock
Bovingdon
Solar panels in Bovingdon
Solar Panels in Neighbouring Counties
Explore solar panel information for counties near Hertfordshire.
Solar panels in Bedfordshire
940 kWh/kWp · #25 in UK
Solar panels in City of London
960 kWh/kWp · #16 in UK
Solar panels in Greater London
960 kWh/kWp · #17 in UK
Solar panels in Buckinghamshire
955 kWh/kWp · #19 in UK
Solar panels in Essex
970 kWh/kWp · #12 in UK
Solar panels in Cambridgeshire
945 kWh/kWp · #22 in UK
Popular Counties for Solar Panels
Some of the most-searched UK counties for solar panel costs, savings, and installers.
Sources
- Ofgem: Smart Export Guarantee
- MCS: Microgeneration Certification Scheme
- HMRC: 0% VAT on Energy Saving Materials
- PVGIS: Solar Irradiance Data
Last updated: November 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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