Commercial solar installers in Haverfordwest

Key facts

Where businesses are in Haverfordwest

• Withybush Industrial Estate: The town's main industrial estate beside Haverfordwest Airport, home to Puffin Produce's Woodlands site and, in 2014, extended into the Haven Waterway Enterprise Zone in full.
• Pembrokeshire Food Park: A Welsh Government development site within Withybush Business Park for food and drink businesses, with plots of 4.8 and 4.5 acres still offered in November 2025; a third plot has been sold and developed.

Large employers and sectors with sites here include:

• Fresh produce (Puffin Produce): Puffin Produce, based on the Withybush Industrial Estate, calls itself Wales' largest supplier of fresh Welsh produce, packing about 40,000 tonnes of Welsh potatoes a year with around 200 staff, and is the sole supplier of Pembrokeshire Early Potatoes PGI.
• Milk processing (Pembrokeshire Creamery): Pembrokeshire Creamery opened its milk bottling plant at Pembrokeshire Food Park in 2024 after nearly £20 million of investment, creating 80 jobs; by then it was bottling more than a million litres of Welsh milk a week, with Lidl and Asda as customers.

Large, simple roofs on distribution sheds and modern industrial units are usually the quickest and cheapest to fit. Older mill, factory and workshop buildings can work well too, but often need a structural survey first, and roofs from before 2000 may contain asbestos cement: see asbestos roofs.

Grid connection

Haverfordwest is served by National Grid Electricity Distribution (South Wales licence area). Almost every commercial system needs G99 approval from the network operator before it is switched on, and the question is usually how much the local network can take back. Where export is limited, a G100 export limitation scheme can let a larger array connect. See G99 and DNO applications.

Planning in Haverfordwest

Planning in Haverfordwest is decided by Pembrokeshire council under the Welsh rules. Many non-domestic roofs are covered by Welsh permitted development, with conditions, but not within 3 km of an airport or aerodrome or on listed buildings.

Points that come up locally:

• The Haverfordwest Conservation Area, designated in 1975, covers about 49.4 hectares of the historic town, so check whether a building is inside it before planning roof panels in the centre.

Our guides on listed buildings and conservation areas explain what these mean for a solar project.

What a business roof in Haverfordwest could generate

Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 1,010 kWh per kWp a year.

Illustrative, not a quote: the same sums as our commercial solar calculator. A company paying corporation tax can usually shorten the payback with capital allowances.

Funding and support

• Development Bank of Wales Green Business Loan Scheme: Loans of £1,000 to £1.5m at a discounted fixed interest rate (never below 3%) for energy efficiency and low carbon projects, with solar PV listed as a typical eligible project. Businesses must be based in Wales and have traded for at least two years with at least one set of filed accounts. A grant of up to 50% of the cost of a detailed energy audit, to a maximum of £10,000, is also offered. Check the scheme's own page for eligibility and closing dates.

National reliefs apply too: see grants and reliefs in Wales.

Solar across Pembrokeshire

At the end of 2025, Pembrokeshire had 9,059 solar PV installations with 248.9 MW of capacity, up 23% since 2020, according to government figures. The Pembrokeshire page has the full local figures and how they compare.

Nearby towns

• Pembroke Dock, about 7 miles away
• Carmarthen, about 28 miles away
• Llanelli, about 35 miles away
• Ammanford, about 42 miles away

Sources

• ons.gov.uk: census2021
• ons.gov.uk: datadownload.xlsx
• puffinproduce.com
• propertydatabase.business.gov.wales: Development Plots Pembrokeshire Food Park Withybush Road Haverfordwest
• agriland.co.uk: pembrokeshire creamery opening creates 80 new jobs
• wired-gov.net: Haven+Waterway+Enterprise+Zone+is+expanded+10032014133000
• gov.uk: maps of celtic freeport tax sites
• heritagecheck.co.uk: haverfordwest
• developmentbank.wales: green
• developmentbank.wales: green business loan scheme
• developmentbank.wales: Green Business Loan Fund campaign guide Eng final
• Yield: PVGIS 5.3 (European Commission Joint Research Centre), SARAH3 data, 14% system losses, for the town centre, modelled 4 November 2026.
• Council area figures: DESNZ, renewable electricity by local authority 2014 to 2025.