Commercial solar panel installers in Carmarthen
Carmarthen is the historic county town of Carmarthenshire and the principal commercial base of West Wales. Cillefwr Industrial Estate west of the town anchors the mature light-manufacturing, food-processing and distribution footprint, Pensarn Business Park on the eastern edge carries the modern speculative light-industrial layer, and the SA31–SA33 hinterland picks up substantial dairy, meat-processing and Welsh agri-food supply-chain activity - including Dunbia's Llanybydder facility on the northern SA40 fringe. National Grid Electricity Distribution's Carmarthen 33 kV feeders retain reasonable rural headroom.
Is your Carmarthen site a fit for commercial solar?
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Best-fit sectors in Carmarthen
- Cillefwr Industrial Estate food processing and light manufacturing
- Pensarn Business Park speculative light-industrial
- West Wales dairy, meat and agri-food supply chain
- Carmarthen town-centre professional services
Solar yield
Areas we cover near Carmarthen
Johnstown · Llangunnor · Nantgaredig · St Clears · Llanddarog · Kidwelly (edge) · Whitland (edge)
Postcodes: SA31, SA32, SA33
Funding for Carmarthen businesses
Run the numbers for your Carmarthen site
Commercial solar by sector in Carmarthen
Based on the dominant industries across Carmarthen, these are the commercial solar specialisms most relevant locally - with the typical site profile for each.
Factories & Manufacturing solar in Carmarthen
Heavy daytime load and process heat - fast payback on industrial roofs. In Carmarthen that means cillefwr industrial estate food processing and light manufacturing and pensarn business park speculative light-industrial - sites we survey regularly across SA31 and the surrounding Wales patch.
- Typical system size
- 300 kWp - 1.5 MWp
- Typical payback
- 3 - 4 years
- On-site self-consumption
- 80 - 95%
Indicative figures for well-matched UK sites - your feasibility review models your actual roof, demand and tariff.
See the full factories & manufacturing guide →Cold Storage & Food Production solar in Carmarthen
24/7 refrigeration load matches solar generation profile. In Carmarthen that means cillefwr industrial estate food processing and light manufacturing and west wales dairy, meat and agri-food supply chain - sites we survey regularly across SA31 and the surrounding Wales patch.
- Typical system size
- 250 kWp - 1 MWp
- Typical payback
- 2.5 - 3.5 years
- On-site self-consumption
- 85 - 95%
Indicative figures for well-matched UK sites - your feasibility review models your actual roof, demand and tariff.
See the full cold storage & food production guide →Commercial Landlords solar in Carmarthen
MEES/EPC uplift, green-lease premiums and tenant resale of power. In Carmarthen that means pensarn business park speculative light-industrial - sites we survey regularly across SA31 and the surrounding Wales patch.
- Typical system size
- 50 - 500 kWp per building
- Typical payback
- 5 - 7 years
- On-site self-consumption
- varies by tenant mix
Indicative figures for well-matched UK sites - your feasibility review models your actual roof, demand and tariff.
See the full commercial landlords guide →Commercial solar in Carmarthen - FAQs
Does Business Wales SME decarbonisation apply to Carmarthen PV?
Yes - Business Wales runs an SBTi-aligned SME decarbonisation programme with grant-funded feasibility studies and capital grants for on-site renewables. Carmarthenshire SMEs on Cillefwr and Pensarn are eligible, and the grants stack with the UK-wide Annual Investment Allowance on the after-grant net capital cost.
Are West Wales dairy loads a strong PV match?
Yes - dairy processing, milk chilling and continuous ice-making at Carmarthenshire creameries all carry sustained daytime baseline demand. Self-consumption on a well-sized rooftop array sits comfortably above 85%, and Welsh Government dairy-supply-chain decarbonisation incentives improve payback further.
How does NGED handle SA31–SA33 G99?
Sub-500 kWp with export limitation typically completes acceptance inside 10–14 weeks on the Cillefwr and Pensarn feeders. NGED's Carmarthen 33 kV carries reasonable rural headroom, though the wider West Wales network has some export-limited primaries towards Whitland.
What yield does an SA31 site deliver?
Around 990–1,030 kWh per kWp per year on shallow east-west sheds and up to around 1,050 on a south-facing pitch. Carmarthen benefits from the same maritime-influenced high UK irradiance band as Pembrokeshire while retaining more moderate summer temperatures inland.
How wide is Carmarthen coverage?
Johnstown, Llangunnor, Nantgaredig, St Clears, Llanddarog, Kidwelly and Whitland are day-one visits. Llanelli, Ammanford, Cardigan, Haverfordwest and Swansea-west are on scheduled survey days from the SA31 base.
Carmarthen is part of our Wales commercial solar service area. See the Wales regional guide →
Ready to see whether your roof could reduce your energy bills?
Explore related pages
- Commercial solar in CarmarthenshireRegional funding, yield and coverage.
- Commercial solar in CardiffNearby in Wales.
- Commercial solar in NewportNearby in Wales.
- Commercial solar in SwanseaNearby in Wales.
- Solar potential by postcodeSee local solar yield for your business postcode.
- Commercial solar cost guideIndicative UK prices per kWp and what drives them.