Solar Panel Installers in Carmarthenshire
Browse 93 MCS certified solar panel installers in Carmarthenshire. All installers listed below are verified on the MCS database. A 4kWp solar system in Carmarthenshire generates approximately 3,480 kWh per year, with 0% VAT on residential installs. 43 installers have Google ratings, averaging 4.7/5.
Showing 24 of 93 installers in Carmarthenshire
Trydan Electrical Services Ltd
carmarthenshire, neath-port-talbot, pembrokeshire +1 more
TLPorter Electrical Contractor Ltd
bridgend, carmarthenshire, neath-port-talbot +1 more
Jones T.V & Electrical Ltd
carmarthenshire, ceredigion, neath-port-talbot +1 more
Solarsurv Ltd
bridgend, carmarthenshire, neath-port-talbot +1 more
Efficient Living Solutions UK Ltd
carmarthenshire, pembrokeshire, swansea
Birdshill (Biomass) Ltd t/a Birdshill Rural Renewables
carmarthenshire, ceredigion, neath-port-talbot +1 more
Hassie Electrical Ltd
bridgend, carmarthenshire, neath-port-talbot +2 more
Thermal Earth Ltd
bridgend, carmarthenshire, neath-port-talbot +2 more
Phase Connections Limited
bridgend, carmarthenshire, merthyr-tydfil +3 more
PW Solar
carmarthenshire, pembrokeshire, swansea
RLW Electrical & Solar Limited
carmarthenshire, neath-port-talbot, pembrokeshire +1 more
Mike Voyle Electrical Ltd
bridgend, carmarthenshire, merthyr-tydfil +3 more
EJS Electrical & Renewables Ltd
bridgend, carmarthenshire, neath-port-talbot +1 more
LD Eco Ltd
bridgend, carmarthenshire, neath-port-talbot +1 more
Dylan Davies Electrical Services (new)
bridgend, carmarthenshire, merthyr-tydfil +3 more
Dinefwr Electrical & Solar Ltd
carmarthenshire
CT Eco Ltd
bridgend, carmarthenshire, neath-port-talbot +2 more
Elexor Engineering Ltd
bridgend, carmarthenshire, neath-port-talbot +1 more
Solar Save Renewables Limited
carmarthenshire, ceredigion, pembrokeshire
Trydanwyr Evans Electricians Ltd
carmarthenshire, ceredigion, swansea
Heating and Boilers (Dyfed) Ltd
carmarthenshire, ceredigion
Martin Rees Electrical Contractors Ltd
carmarthenshire, ceredigion, merthyr-tydfil +2 more
How do you choose a solar panel installer in Carmarthenshire?
Check MCS Certification
Only MCS-certified installers qualify you for the Smart Export Guarantee and 0% VAT on residential installs. Verify your installer on the MCS database. 93 installers serving Carmarthenshire are currently certified.
Compare Multiple Quotes
Get at least 2–3 written quotes with itemised breakdowns. A typical 4kWp system in Carmarthenshire costs £6,600–£8,500 including 0% VAT. Ensure quotes include panels, inverter, mounting, electrical work, and EPC assessment.
Verify Insurance & Warranties
Confirm public liability insurance and ask about workmanship warranty (minimum 5 years). Panel manufacturers typically offer 25-year performance guarantees and inverters come with 10–12 year warranties.
Read Customer Reviews
Check Google, Trustpilot, and Facebook reviews. Ask for references from recent installations in Carmarthenshire. Look for detailed reviews mentioning communication, tidiness, and after-sales support.
Check Equipment Brands
Ask which panel and inverter brands are used. Tier 1 solar panel manufacturers (e.g. JA Solar, Trina, Canadian Solar) offer the most reliable long-term performance. Avoid quotes that don't specify equipment.
Confirm Paperwork Handling
A good installer helps with the DNO notification, MCS certification, and arranges the post-works EPC assessment. Ask whether these are included in the quoted price.
Solar Panels in Carmarthenshire
Solar yield, savings calculator, and local data for Carmarthenshire.
Solar Grants in Carmarthenshire
Grants, incentives, and payback calculations for Carmarthenshire.
Commercial Solar in Carmarthenshire
Commercial solar installers, costs and tax relief for Carmarthenshire businesses.
Other Renewable Energy Installers in Carmarthenshire
Heat Pump Installers
MCS certified heat pump installers in Carmarthenshire. Boiler Upgrade Scheme grants available.
Solar Thermal Installers
MCS certified solar thermal installers in Carmarthenshire. 0% VAT on residential installs.
Biomass Installers
MCS certified biomass installers in Carmarthenshire. Boiler Upgrade Scheme grants available.
EPC Assessors
Accredited EPC assessors in Carmarthenshire. Get your Energy Performance Certificate.
EV Charger Installers
Approved EV charger installers in Carmarthenshire. OZEV grant up to £350.
Solar Panels by Town in Carmarthenshire
Frequently Asked Questions About Solar Installers in Carmarthenshire
How do I find a good solar panel installer in Carmarthenshire?
Check that the installer is MCS certified, as this is required to qualify for the Smart Export Guarantee and 0% VAT. Compare at least 2–3 quotes, ask for references from recent jobs in Carmarthenshire, and verify they carry public liability insurance. Look for companies with Google or Trustpilot reviews and check they offer a workmanship warranty of at least 5 years alongside the panel manufacturer warranty (typically 25 years).
How much do solar panel installers in Carmarthenshire charge?
A typical 4kWp residential installation in Carmarthenshire costs £6,600–£8,500 including 0% VAT. Prices vary by installer, roof type (slate, tile, flat), scaffolding requirements, and whether a battery is included. Always get itemised quotes so you can compare like for like.
Are solar panel installers in Carmarthenshire MCS certified?
Not all installers are MCS certified. You must use an MCS-certified installer to qualify for the Smart Export Guarantee and 0% VAT. MCS maintains a public database at mcscertified.com/find-an-installer/. On this page, 93 of the 93 listed installers are MCS certified. Look for the "MCS Certified" badge on each listing.
How long does solar panel installation take?
The physical installation is typically completed in 1–2 days for a standard residential system. The full process from initial quote to completed installation usually takes 4–8 weeks, including the DNO application, installer scheduling, and the post-installation EPC assessment.
Do I need to apply for anything before hiring an installer in Carmarthenshire?
Your MCS-certified installer will handle the DNO (Distribution Network Operator) notification on your behalf. For the Smart Export Guarantee, you can apply with your energy supplier after installation is complete. Make sure your installer provides you with an MCS certificate, as this is required for SEG eligibility.
Get a Free Solar Quote
Connect with MCS-certified solar panel installers in Carmarthenshire.
Sources
Last updated: August 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy