Haverfordwest is the county town and administrative centre of Pembrokeshire, and the commercial hub for a predominantly rural county. The SA61 catchment carries Pembrokeshire County Council, Withybush General Hospital, a retail core on Bridge Street and High Street, and the Withybush Road industrial estate and business park that serves the wider county economy.
Commercial solar in SA61 benefits from the Pembrokeshire solar yield advantage — PVGIS data returns 980 to 990 kWh/kWp for SA61, significantly above the South Wales inland average and among the highest commercial solar yields in FLD’s coverage area.
Withybush Hospital: the public sector anchor
Withybush General Hospital is operated by Hywel Dda University Health Board. The hospital campus carries substantial flat roof area on ward blocks and support buildings from the 1970s through 1990s construction phases. Salix Wales interest-free loan financing is available to Hywel Dda UHB — eliminating conventional capital payback analysis for hospital estate solar investments.
FLD provides ESOS-formatted feasibility reports for Hywel Dda estate managers at no cost. The hospital’s continuous 24-hour operation produces exceptionally high self-consumption rates — typically 82% to 88% for a well-sited hospital rooftop array — making the financial case per pound of Salix borrowing among the strongest in the public sector.
Pembrokeshire County Council estate
Pembrokeshire County Council operates county offices, leisure centres, libraries and schools across the SA61 catchment and wider county. All council estate buildings are eligible for Salix Wales financing. The Council’s portfolio of 1970s to 1990s buildings with flat roofs represents a significant rooftop solar opportunity.
FLD has provided pre-application feasibility assessments for multiple Pembrokeshire County Council buildings and can coordinate with Council procurement processes.
Payback model: 100 kWp SA61 commercial building
| Metric | Value |
|---|---|
| Annual generation | 98,500 kWh |
| Self-consumed (70%) | 68,950 kWh |
| Electricity cost saving (30p/kWh) | £20,685 |
| SEG export income (30%) | £3,558 |
| Year-one benefit | £24,243 |
| Installed cost | £86,000 |
| Simple payback | 3.5 years |
| AIA post-tax payback | 2.6 years |
The Pembrokeshire yield premium over a Cardiff installation improves year-one benefit by approximately £1,200 on a 100 kWp system — a compounding advantage over the 25-year system life.
SP Manweb and Haverfordwest grid
SA61 is SP Manweb territory. G99 Type A approval timelines run at 14 to 20 weeks. Haverfordwest town centre substations serve a mixed residential and commercial load and carry reasonable export headroom for commercial solar up to 100 kWp at most town-centre connection points.
For larger installations — hospital-scale 200 kWp to 400 kWp arrays — FLD runs SP Manweb pre-application enquiries to confirm export headroom before committing to programme dates.
Ynni Cymru for SA61 businesses
Haverfordwest businesses registered in Wales qualify for Ynni Cymru capital grants of £25,000 to £1,000,000. Pembrokeshire’s rural and coastal economy includes tourism, agriculture, food production and professional services businesses all eligible under the programme. FLD assists with pre-application feasibility documentation, including Welsh-medium applications for qualifying businesses.
Domestic solar in SA61
Haverfordwest’s residential stock — Victorian and Edwardian terraces around the town centre, post-war semis at Prendergast and Portfield, newer detached stock on the Haverfordwest western periphery — benefits from the Pembrokeshire yield premium. A 4 kWp south-facing SA61 domestic installation at 985 kWh/kWp generates 3,940 kWh annually, with year-one benefit of approximately £810 at 45% self-consumption.
Getting a Haverfordwest survey
FLD covers SA61 on regular Pembrokeshire survey days combining Haverfordwest, Milford Haven and Pembroke Dock. Call Paul on 01792 680611 for a no-cost assessment.