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Carmarthenshire CC

Solar and Electrical Contractors in Kidwelly

FLD's closest outlying town at 28 minutes with the best-preserved four-towered castle in Wales and coastal bungalow solar stock

Postcodes
SA17
Local authority
Carmarthenshire CC
Drive from HQ
18 mi · 28 min
Solar yield
965 kWh/kWp
SA17 28 min from our Swansea base 965 kWh/kWp solar yield Commercial energy intensity: Medium

Serving Kidwelly

Kidwelly -- Cydweli in Welsh -- is a small historic town on the Gwendraeth Fawr estuary in Carmarthenshire, approximately 18 miles from FLD's Swansea base and the closest non-Swansea location in the portfolio. The town carries a population of approximately 3,500 and sits within a few miles of Llanelli, bridging the industrial and coastal landscapes of south Carmarthenshire.

The castle is the defining feature. Kidwelly Castle, begun in the late eleventh century, is one of the best-preserved medieval fortifications in Wales and the only substantial four-towered castle of its type in the country. Cadw manages the site, which draws consistent visitor numbers and anchors the town's heritage-tourism identity alongside the Kidwelly Industrial Museum, which preserves the former tinplate works site.

The commercial position is more industrial than market-town. The Kidwelly Industrial Estate on the Llanelli Road approach carries light manufacturing, trade-counter and logistics businesses. Immediately adjacent, Glanymor Industrial Estate adds further commercial floorspace. The town sits at the junction of the A484 -- the main Carmarthen-to-Llanelli road -- meaning it captures logistics traffic between Carmarthen and the Llanelli industrial cluster.

Carmarthenshire County Council administers the area. The local authority's Strategic Planning Policy includes a renewable energy commitment across the county that is particularly supportive of farm solar on agricultural land east of the Gwendraeth valley.

Housing is predominantly inter-war and post-war semi-detached, with a Victorian core around the market and castle areas. The mix includes a significant number of bungalows on the south-western edge of the town facing Carmarthen Bay, which carry excellent south-facing roof planes at relatively low pitch. Bungalow solar is sometimes overlooked because of lower roof area per dwelling compared to two-storey properties, but the Kidwelly coastal bungalow stock has consistent orientation that produces strong generation-per-panel ratios.

At 965 kWh/kWp PVGIS yield, a 30 kWp trade-counter or light-industrial rooftop on Kidwelly Industrial Estate generates 28,950 kWh annually. With 65% self-consumption at 27p/kWh, first-year benefit reaches approximately £6,100 on £27,000 capex. Simple payback 4.4 years; AIA post-tax payback 3.3 years.

The proximity to Swansea -- 28 minutes via the A484 -- means FLD can serve Kidwelly on a same-morning call combined with Llanelli and Carmarthen without a dedicated travel day.

Commercial sites and business parks

Medium energy intensity

Kidwelly Industrial Estate

Glanymor Industrial Estate

Commercial solar estimate — Kidwelly

100 kWp reference system at 965 kWh/kWp

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

96,500
kWh/yr
Annual generation
£22,002
per year
Annual saving
3.9
years
Simple payback
2.9
years (AIA)
Post-tax payback
Indicative only. Based on PVGIS irradiance data for Kidwelly. Actual figures depend on roof orientation, shading and tariff. Request a detailed survey.
Domestic solar

Housing stock in Kidwelly

Victorian castle-area core, inter-war semis, coastal bungalows on south-western fringe

A typical 4 kWp domestic install here generates 3,860 kWh/yr. With 40% self-consumption at 30p/kWh and 60% SEG export at 15p/kWh, first-year saving is approximately £811.

965
kWh/kWp/yr
PVGIS irradiance

Local landmarks and context

  • Kidwelly Castle (11th century)
  • Kidwelly Industrial Museum (former tinplate works)
  • Gwendraeth Fawr estuary

Major employers we work with

  • Cadw (Kidwelly Castle)
  • Kidwelly Industrial Museum
  • Industrial Estate SMEs

Recent local developments

  • Carmarthenshire farm solar Farming Connect uptake
  • Kidwelly Industrial Museum heritage investment
From the blog

Guides for Kidwelly

Commercial solar in Kidwelly (SA17): Carmarthenshire coastal industrial

SA17 solar for Kidwelly light-industrial and agricultural businesses, with Carmarthenshire planning and NGED grid connection notes.

4 min
Read
FAQ

FAQs for Kidwelly

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.
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.
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, 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.

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