Solar panels in Haverfordwest

Haverfordwest is the county town of Pembrokeshire, where the 2021 Census counted 123,360 residents across the council area. Solar Cymru is an independent solar guide and referral service. We do not fit panels or lend money. We send your enquiry to MCS-certified installers.

Pembrokeshire pairs good yield with a protected coastline. This page shows what that means for yield, planning and cost. It ends with a plain route to quotes.

Some of the best yield in Wales

PVGIS models about 1,020 kWh a year for each kWp on a south-facing roof at 35 degrees in Haverfordwest. That puts the town near the top of the Welsh range. A 4 kWp system makes about 4,100 kWh a year on that basis. The model still assumes 14% system losses, so your real figure depends on shade, wiring and equipment.

A west-facing roof makes about 15 to 20% less than south, yet it spreads output later into the day. Our solar yield guide explains the trade-off and the MCS performance estimate.

Planning, the coast park and listed buildings

Most house roofs in Wales fall under permitted development. Panels may not stand more than 200 mm proud of the roof slope. They must also stay below the highest part of the roof. Flat roofs need a 1 metre gap from the edge.

Pembrokeshire County Council handles planning for most of the county. However, land inside Pembrokeshire Coast National Park falls to the National Park Authority instead. The Welsh domestic rules name conservation areas and World Heritage Sites but not parks, so ask the authority anyway. Our guide to solar panels in national parks explains what to ask.

Cadw’s data records 24 conservation areas in the county. One is named Haverfordwest, and park land is counted apart. A listed house needs planning permission and likely listed building consent. Read listed buildings and conservation areas before you book a survey. Our planning permission guide lists every exception.

Grid connection in west Wales

National Grid Electricity Distribution, the local network operator, lists the town in its South Wales report. Most homes use the G98 route. It covers inverters up to 3.68 kW on a single phase, and your installer notifies the operator within 28 days. A larger system needs agreement first under G99, and the operator can ask you to help pay for network strengthening.

Ask your installer early if your site needs the operator’s approval. Our grid and export guide covers export tariffs. Ofgem’s 2024-25 report found an average near 4.4p per kWh on untied tariffs, so compare offers.

Farms and rural roofs

Farm roofs in Pembrokeshire follow the rules for non-domestic buildings. There is no kilowatt cap, although conditions apply, including a 3 km limit from airports and care over glint and glare. On designated land, panels must not sit on a roof slope that fronts a highway. Ground arrays above 9 square metres need a planning application.

Welsh policy protects the best farmland, and it prefers low-grade land for solar farms. The Development Bank of Wales offers a Green Business Loan Scheme, and Farming Connect gives renewable energy advice. Our article on solar panels for Welsh farms sets out each route.

Costs and funding

A 4.5 kWp home system, the typical size, costs roughly £6,500 to £8,800 once fitted. From 1 April 2027, VAT on home installations is due to rise from 0% to 5% unless the law changes. Typical savings sit around £450 to £500 or more a year for a household with solar. Green Homes Wales loans run from £1,000 to £25,000 for owner-occupiers, while Warm Homes Nest helps eligible low-income households. See the funding guide.

Asking for quotes in Haverfordwest

Shade, roof age and equipment choice all change a price. Fill in the quote form once. Solar Cymru then refers your enquiry to MCS-certified installers. Our solar panel installation page explains the written design you should receive. Ask each firm to list every cost in writing, including travel or survey fees.

Pages for nearby areas may help you compare. Read about solar installers in Llanelli, panels for Swansea homes and quotes around Neath.