Skip to content

Gwynedd CC

Solar and Electrical Contractors in Harlech

UNESCO World Heritage Site with 970 kWh/kWp -- the highest solar yield in FLD's coverage north of Pembrokeshire

Postcodes
LL46
Local authority
Gwynedd CC
Drive from HQ
108 mi · 145 min
Solar yield
970 kWh/kWp
LL46 145 min from our Swansea base 970 kWh/kWp solar yield Commercial energy intensity: Low

Serving Harlech

Harlech is a small coastal town in Meirionnydd, Gwynedd, with a permanent population of approximately 1,400, perched on a cliff above the sandy shore of Cardigan Bay below the Rhinog mountains. The town is dominated by Harlech Castle -- a UNESCO World Heritage Site as part of Edward I's Iron Ring of castles, begun in 1283 and completed in 1289, one of the finest examples of late-thirteenth-century military architecture in Europe.

Harlech sits entirely within the Eryri National Park. The Castle is a Grade I listed monument in Cadw care, and the combination of UNESCO World Heritage designation and National Park status makes Harlech one of the most planning-sensitive locations in FLD's coverage area. Every solar installation here requires careful pre-application assessment, and in-roof integrated systems with dark-framed panels are the standard specification for any elevation within the World Heritage Buffer Zone.

The World Heritage Buffer Zone covers the Castle itself, the town cliff-top above the beach, and the immediate townscape. Properties within the Buffer Zone require pre-application consultation with both ENPA and Cadw. Outside the Buffer Zone but within the National Park -- which covers all of LL46 -- standard ENPA pre-application consultation applies.

The economy is dominated by heritage tourism anchored by the Castle. Harlech Golf Club, established in 1894 and occupying the links land between the town and the sea, is one of the premier links courses in Wales and hosts significant professional and amateur tournaments. The golf club's clubhouse, accommodation and maintenance buildings represent a commercial solar opportunity where the ENPA assessment would focus on visibility from the beach and dune path approaches rather than from within the Castle Buffer Zone.

Holiday accommodation in Harlech -- guesthouses, B&Bs, self-catering properties on the slopes above the beach -- has the same seasonal demand-alignment advantage as Barmouth: peak holiday occupancy in June to August coincides exactly with peak solar generation. At 970 kWh/kWp (the highest yield in FLD's Gwynedd coverage), Harlech properties generate more per kWp than anywhere in the portfolio south of the Meirionnydd coast.

FLD reaches Harlech in approximately 145 minutes via the A470 and A496. Coverage combines with Barmouth and Dolgellau on a Meirionnydd coastal circuit. Given the drive time, FLD schedules Harlech alongside at least two other Gwynedd coastal visits.

Commercial solar estimate — Harlech

100 kWp reference system at 970 kWh/kWp

Modelled at 27p/kWh blended import, 15p/kWh SEG export, 55% self-consumption for low energy intensity site.

97,000
kWh/yr
Annual generation
£20,952
per year
Annual saving
4.1
years
Simple payback
3.0
years (AIA)
Post-tax payback
Indicative only. Based on PVGIS irradiance data for Harlech. Actual figures depend on roof orientation, shading and tariff. Request a detailed survey.
Domestic solar

Housing stock in Harlech

Stone-built Victorian and Georgian hillside town, coastal guesthouses, holiday-let properties

A typical 4 kWp domestic install here generates 3,880 kWh/yr. With 40% self-consumption at 30p/kWh and 60% SEG export at 15p/kWh, first-year saving is approximately £815.

970
kWh/kWp/yr
PVGIS irradiance

Local landmarks and context

  • Harlech Castle (UNESCO World Heritage Site, 1283)
  • Royal St David's Golf Club (1894)
  • Cardigan Bay beach and dunes

Major employers we work with

  • Cadw (Harlech Castle)
  • Royal St David's Golf Club
  • Seasonal hospitality SMEs

Recent local developments

  • Harlech Castle conservation works
  • Gwynedd holiday-let licensing
  • ENPA sustainable tourism strategy
From the blog

Guides for Harlech

Solar PV in Harlech (LL46): Gwynedd coastal yields and World Heritage planning

Harlech sits inside Eryri National Park and near a UNESCO World Heritage Site. Here is how solar works for LL46 commercial and domestic properties.

4 min
Read
FAQ

FAQs for Harlech

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.
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.
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.
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.
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.