Skip to content

Pembrokeshire CC

Solar and Electrical Contractors in St Davids

Britain's smallest city with the highest solar yield in FLD's coverage -- 995 kWh/kWp

Postcodes
SA62
Local authority
Pembrokeshire CC
Drive from HQ
88 mi · 120 min
Solar yield
995 kWh/kWp
SA62 120 min from our Swansea base 995 kWh/kWp solar yield Commercial energy intensity: Medium

Serving St Davids

St Davids -- Tyddewi in Welsh -- is the smallest city in Britain by population, carrying approximately 1,800 residents, yet holds city status by virtue of its cathedral and the presence of the patron saint of Wales. The city sits on the St Davids Peninsula at the westernmost point of Wales, inside the Pembrokeshire Coast National Park, and benefits from the highest solar irradiation of any location in FLD's entire coverage area.

The PVGIS yield for SA62 sits at 995 kWh/kWp -- fractionally below 1,000, and among the highest in England and Wales. The Peninsula faces directly south-west across St Brides Bay toward the Atlantic, with almost no horizon obstruction beyond the coastal cliffs. Solar panels here generate more energy per kilowatt of installed capacity than anywhere on the South Wales mainland.

The local economy is dominated by religious and cultural tourism anchored by St Davids Cathedral, Britain's westernmost cathedral and a Grade I listed building attracting over 300,000 visitors per year. RSPB Ramsey Island boat trips, the Pembrokeshire Coastal Path which passes through the city, and a cluster of outdoor activity operators make up the balance. Commercial floorspace is limited to the Cross Square area, Oriel y Parc (the national park gallery and visitor centre), and small-scale hospitality and retail.

Residential stock is almost entirely granite and local-stone cottages with slate roofs -- properties where in-roof integrated solar is typically specified rather than on-roof rail-mounted systems, both to satisfy Pembrokeshire Coast National Park design guidance and to protect the historic stone fabric from unnecessary penetrations. In-roof systems cost approximately 30 to 50% more than equivalent on-roof capacity but are the standard FLD specification for this postcode.

The planning position here requires pre-application consultation with the National Park Authority for any front-elevation proposals or listed-building adjacencies. The PNPA planning officer is generally supportive of well-designed rear-roof solar for rural and tourism operations; opposition is directed at ground-mounted arrays in the open coastal landscape.

At 995 kWh/kWp, a 50 kWp hospitality rooftop in St Davids generates 49,750 kWh per year -- the maximum output we model for any South Wales installation of this size. Summer hospitality self-consumption peaks above 85% through June to August. First-year benefit: approximately £13,800 on £48,000 installed cost including in-roof integration premium.

FLD reaches St Davids via the A40 and B4583 in approximately 120 minutes from Swansea. Coverage here is planned as a dedicated north Pembrokeshire day combining with Fishguard, Haverfordwest and Pembroke Dock.

Commercial solar estimate — St Davids

100 kWp reference system at 995 kWh/kWp

Modelled at 27p/kWh blended import, 15p/kWh SEG export, 65% self-consumption for medium energy intensity site.

99,500
kWh/yr
Annual generation
£22,686
per year
Annual saving
3.7
years
Simple payback
2.8
years (AIA)
Post-tax payback
Indicative only. Based on PVGIS irradiance data for St Davids. Actual figures depend on roof orientation, shading and tariff. Request a detailed survey.
Domestic solar

Housing stock in St Davids

Granite and local-stone cottages, former rectory detacheds, rural farmhouses

A typical 4 kWp domestic install here generates 3,980 kWh/yr. With 40% self-consumption at 30p/kWh and 60% SEG export at 15p/kWh, first-year saving is approximately £836.

995
kWh/kWp/yr
PVGIS irradiance

Local landmarks and context

  • St Davids Cathedral (Grade I)
  • Pembrokeshire Coast National Park HQ
  • St Non's Chapel
  • Ramsey Island

Major employers we work with

  • St Davids Cathedral
  • RSPB Ramsey Island
  • Oriel y Parc
  • Coastal tourism SMEs

Recent local developments

  • Oriel y Parc National Park gallery expansion
  • Pembrokeshire Coast Path centenary works
From the blog

Guides for St Davids

Solar in St Davids: 995 kWh/kWp and why the smallest city has the biggest solar yield

A guide to solar installation in St Davids, SA62 -- why the Pembrokeshire peninsula achieves the highest solar yield in Wales, in-roof integrated design for the National Park, and payback examples for coastal hospitality.

5 min
Read
FAQ

FAQs for St Davids

Yes, with design compliance. The Gower Area of Outstanding Natural Beauty (Britain's first AONB, designated 1956) imposes visual-impact constraints. In-roof integrated solar is the routine compliant option, sitting flush with the roof rather than proud of it. For listed buildings and properties within Oystermouth or Penmaen conservation areas, additional consent may be required and we handle that process as part of scope.
Yes, with sensitivities. The Bannau Brycheiniog National Park (renamed from Brecon Beacons in April 2023) includes a Dark Sky Reserve and has a net-zero management plan. Rooftop solar on non-listed buildings is generally permitted development under Welsh planning rules, though the Park authority treats listed structures and archaeologically-sensitive farmsteads on a case-by-case basis. We have delivered farm and hospitality solar inside the Park boundary.
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.
Most rooftop non-domestic solar is permitted development under the Welsh General Permitted Development Order amendments, subject to limits such as 20 cm protrusion on pitched roofs and 1 m on flat roofs, and with restrictions for listed buildings and conservation areas. Ground-mount beyond those PD limits needs a full planning application. Systems over 10 MW are a Development of National Significance determined by Welsh Ministers.
Yes, for domestic systems. MCS certification of the installation is required to claim SEG payments with any UK supplier. We are MCS-certified and handle the paperwork as part of the install.

Ready for a fixed-price quotation?

Speak to Paul directly. Most quotes turn around within five working days of a site survey.

Trusted by NHS care providers, HMCTS and private developers across South Wales.