Solar & battery in Haverfordwest: the local numbers

Why Haverfordwest works for solar

Around 16% of homes in Pembrokeshire / Sir Benfro already generate their own power — one of the highest rates in Britain. That matters twice: it proves panels work here, and it makes Haverfordwest one of the UK’s best places to add a battery to existing solar, because most of those systems went in before home batteries were affordable.

Pembrokeshire ranks in the UK’s top five for household solar (Energy Saving Trust), helped by some of Wales’s sunniest coastal weather.

Welsh households also have the Nest scheme for eligible homes, plus 0% VAT on panels and batteries UK-wide.

What the sums look like

At the current capped electricity rate of 26.32p/kWh (Ofgem, Oct–Dec 2026), a well-sited 4 kW system in Haverfordwest producing 4,107 kWh a year is worth roughly £480–£810 a year in avoided imports, depending on how much you use as it’s generated — batteries push you toward the top of that range. Export payments add more on top.

Figures verified 18 October 2026. Yields assume an unshaded roof at optimal angle; real roofs vary.

Quick answers

Is solar worth it in Haverfordwest?

Usually, yes. A well-sited 4 kW system here produces about 4,107 kWh a year (PVGIS), worth roughly £480–£810 a year at the current 26.32p/kWh capped rate, before export payments. Payback for most roofs lands in the 5–8 year range against a 25-year panel life.

How many homes in Haverfordwest already have solar?

About 15.7% of households across Pembrokeshire / Sir Benfro generate their own power — and installs grew 38% between 2023 and 2025 (DESNZ official statistics).

What help is available for solar near Haverfordwest?

Welsh households can check the Nest scheme for eligible free measures, and 0% VAT applies to panels and batteries UK-wide.