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Pembrokeshire CC

Commercial Solar and Electrical in Haverfordwest

Inside the Celtic Freeport with the highest solar yield in South Wales at 985 kWh/kWp

Postcodes
SA61, SA62
Local authority
Pembrokeshire CC
Drive from HQ
62 mi · 90 min
Solar yield
985 kWh/kWp
SA61, SA62 90 min from our Swansea base 985 kWh/kWp solar yield Commercial energy intensity: High

Serving Haverfordwest

Haverfordwest is the county town of Pembrokeshire, with a population of approximately 14,600. Key employers are Withybush Hospital under Hywel Dda UHB, Pembrokeshire County Council, Ledwood Engineering, and Saputo Dairy UK (formerly Dairy Crest, operating a substantial processing site in the town). Commercial estate runs through Withybush Industrial Estate, Merlins Bridge and the Pembrokeshire Technium.

The town sits inside the Celtic Freeport tax-advantaged catchment designated in 2023, which links Milford Haven and Port Talbot into a single economic zone with capital allowance and business rates incentives. Haverfordwest benefits from the regional procurement pipeline that Freeport activation is generating.

Landmarks include Haverfordwest Castle, the Haverfordwest Priory ruin, and Scolton Manor museum. The town has held a market for over eight centuries, and the agricultural hinterland remains a central feature of the local economy.

Infrastructure and investment through 2024 to 2026 focuses on two programmes. The Pembrokeshire Tidal Lagoon feasibility study continues to mature, with potential long-term renewable generation implications for the whole county. Celtic Freeport operational buildout is bringing fresh industrial floorspace to both the Milford Haven and Port Talbot halves of the Freeport zone, with knock-on logistics and engineering demand in Haverfordwest.

The Pembrokeshire solar yield is the highest in South Wales at 985 kWh/kWp per year. The county enjoys over 1,700 hours of sunshine annually, among the highest UK counties. For a dairy-processing site like Saputo, a 500 kWp rooftop generates 492,500 kWh a year. With 75% self-consumption at 26p/kWh blended, first-year benefit is approximately £120,000 on £425,000 capex. Simple payback 3.5 years, post-tax payback 2.6 years.

Drive time from Swansea is 90 minutes via the A40. We combine Haverfordwest commercial surveys with Pembroke, Milford Haven and Narberth visits into a single Pembrokeshire coverage day to keep response times and travel costs sensible.

Commercial sites and business parks

High energy intensity

Withybush Industrial Estate

Merlins Bridge

Pembrokeshire Technium

Commercial solar estimate — Haverfordwest

100 kWp reference system at 985 kWh/kWp

Modelled at 27p/kWh blended import, 15p/kWh SEG export, 72% self-consumption for high energy intensity site.

98,500
kWh/yr
Annual generation
£23,285
per year
Annual saving
3.7
years
Simple payback
2.7
years (AIA)
Post-tax payback
Indicative only. Based on PVGIS irradiance data for Haverfordwest. Actual figures depend on roof orientation, shading and tariff. Request a detailed survey.
Domestic solar

Housing stock in Haverfordwest

Georgian market-town centre, Victorian terraces, modern estates

A typical 4 kWp domestic install here generates 3,940 kWh/yr. With 40% self-consumption at 30p/kWh and 60% SEG export at 15p/kWh, first-year saving is approximately £827.

985
kWh/kWp/yr
PVGIS irradiance

Local landmarks and context

  • Haverfordwest Castle
  • Haverfordwest Priory
  • Scolton Manor

Major employers we work with

  • Withybush Hospital
  • Pembrokeshire CC
  • Ledwood Engineering
  • Saputo Dairy UK

Recent local developments

  • Pembrokeshire Tidal Lagoon feasibility
  • Celtic Freeport activation
From the blog

Guides for Haverfordwest

Location GuidesHaverfordwest

Commercial solar Haverfordwest: SA61 county town businesses, Withybush Hospital and SP Manweb connections

Commercial solar for Haverfordwest SA61 -- county town retail and commercial payback models, Withybush Hospital public sector context, SP Manweb G99 timelines and Ynni Cymru grant eligibility.

4 min
Read
Location GuidesHaverfordwest

Domestic solar Haverfordwest: SA61 Atlantic yield, conservation planning and SP Manweb guide

Domestic solar for Haverfordwest SA61 -- Prendergast and Portfield payback models, conservation area planning guidance, 985 kWh/kWp yield advantage and SP Manweb G99 timelines for west Pembrokeshire.

4 min
Read
Sector guides

Commercial solar sectors near Haverfordwest

Sector Guides

Commercial solar for Welsh farms: agricultural buildings, Farming Connect grants and single-farm payment implications

How Welsh farmers are using commercial solar on agricultural buildings to cut electricity costs -- with payback models for 50 kWp to 200 kWp barn installations, Farming Connect grant eligibility and planning considerations.

5 min
Read
Sector Guides

Commercial solar for South Wales factories: Tata supply chain, ESOS compliance and AIA payback

How South Wales manufacturers are using commercial solar to cut electricity costs, meet ESOS Phase 4 obligations and satisfy Scope 3 reporting -- with payback worked examples from 250 kWp to 500 kWp.

5 min
Read
FAQ

FAQs for Haverfordwest

Yes. The Celtic Freeport, designated in 2023 and covering Milford Haven and Port Talbot, sits squarely inside our core coverage. We have active engagement with supply-chain tenants on rooftop solar and industrial electrical works across both port clusters, and we hold ConstructionLine accreditation for tier-1 main-contractor procurement frameworks operating inside the Freeport tax-advantaged zones.
At 30p/kWh grid electricity, a 100 kWp system generating 95,000 kWh/yr with 70% self-consumption delivers around £24,000 of year-one benefit against c. £85,000 capex, a 3.5-year simple payback. Under Annual Investment Allowance first-year 100% relief, post-tax payback is closer to 2.6 years. South Wales yields 940 to 985 kWh/kWp/year depending on postcode, comfortably enough for commercial solar to be cashflow positive from month one with a PPA.
A Power Purchase Agreement is a financing arrangement where we fund and install a rooftop solar system at no upfront cost. Your business buys the electricity the system generates at a fixed, RPI-indexed rate that is lower than your grid tariff. The PPA typically runs 10 to 25 years. At the end you can extend, buy out at a pre-agreed residual value, or have the system removed. It suits businesses that want immediate savings without capital outlay and that are credit-worthy with a stable site.
Yes, depending on organisation type. Welsh SMEs and public bodies can access the Welsh Government Energy Service, Ynni Cymru Capital Grants (approximately £10 m in 2026-27, £25,000 to £1 m per project) and Development Bank of Wales Green Business Loans. Welsh public-sector bodies use Salix Wales Funding Programme rather than the English Public Sector Decarbonisation Scheme. Farms may be eligible under Farming Connect. Always check current-year terms before committing.
Usually yes. Dairy, pig, poultry and grain-drying operations have large daytime loads that match solar output. A 50 kWp farm array generating 47,500 kWh a year, with 75% self-consumption at 28p/kWh plus 25% export at 12p/kWh, delivers first-year benefit of c. £11,400 against capex of c. £45,000. Simple payback 3.9 years, post-tax payback c. 2.9 years with Annual Investment Allowance. Farming Connect grants can shorten this further.

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