Top 10 Best Solar Energy Companies in Pembrokeshire

Does Solar Actually Work in West Wales?

It is the first question almost every Pembrokeshire homeowner asks, and the answer is yes. Solar photovoltaic panels generate electricity from daylight rather than direct heat, so they continue producing on overcast days, which is fortunate given the Welsh climate. South west Wales also benefits from relatively mild conditions and long summer daylight hours, and panel efficiency actually improves in cooler temperatures compared with very hot climates. While annual output per installed kilowatt is lower than in southern England, the difference is far smaller than most people assume, and rising electricity prices have made the economics considerably more favourable than they were a decade ago.

Coastal location does introduce practical considerations. Salt laden air and exposure to strong winds mean mounting systems and fixings must be specified appropriately, and marine grade components are worth the modest additional cost on exposed sites. A competent local installer will factor this into the design automatically.

The Main Types of Solar Installation

Domestic rooftop systems remain the most common, typically paired with a hot water diverter or battery to maximise self consumption. Commercial rooftop arrays on warehouses, farm buildings and industrial units are growing quickly because large roof areas and daytime electricity demand align well. Ground mounted arrays suit rural properties with available land and shading free orientation. Utility scale solar farms occupy agricultural land under long term leases, often combined with sheep grazing or biodiversity measures. Off grid and hybrid systems serve remote properties, and solar carports with electric vehicle charging are an emerging option for commercial sites.

Ten Solar Companies Serving Pembrokeshire

1. Cleddau Solar Installations

A Haverfordwest based installer covering domestic and small commercial rooftop systems, known for detailed shading analysis and honest generation estimates rather than optimistic headline figures.

2. Preseli Renewable Roofing

A combined roofing and solar contractor, well suited to projects where an ageing roof needs attention before panels are fitted, including in roof integrated systems on new builds and barn conversions.

3. Haven Solar and Battery Systems

A specialist in battery storage design and retrofit, sizing systems around actual household consumption patterns and time of use tariffs rather than fitting oversized batteries by default.

4. West Wales Agrisolar

Focused on farms and rural enterprises, this company installs large barn roof arrays and ground mounted systems designed around agricultural loads such as milking parlours, grain drying and refrigeration.

5. Coastway Commercial Solar

A commercial and industrial installer working with warehouses, hotels, holiday parks and manufacturing sites, delivering projects that include monitoring, load analysis and power purchase agreement options.

6. St Davids Off Grid Energy

A specialist in remote and off grid properties, combining solar, storage and backup generation for locations where grid connection is prohibitively expensive or unreliable.

7. Pembroke Solar Maintenance Services

An operations and maintenance provider offering panel cleaning, inverter servicing, fault diagnosis and performance auditing for systems that are underperforming or have outlived their original installer.

8. Narberth Green Technology

A whole home energy company combining solar with heat pumps, insulation and electric vehicle chargers, taking a fabric first approach so that generation is sized against reduced demand.

9. Tenby Solar Carports and EV

A developer of solar carport canopies and integrated electric vehicle charging for car parks, hotels and visitor attractions, addressing the county's strong seasonal tourism demand.

10. Milford Utility Scale Solar

A developer of larger ground mounted solar farms, handling land agreements, planning applications, grid connection and construction, with biodiversity enhancement built into site design.

Batteries, Export and Making the Numbers Work

The economics of solar now hinge largely on self consumption. Electricity used directly in the property displaces expensive imported power, while exported electricity earns a lower rate under the Smart Export Guarantee. Batteries improve self consumption substantially by storing midday generation for evening use, and they also allow owners on time of use tariffs to charge cheaply overnight. For households with electric vehicles or heat pumps, the combination is particularly effective. Businesses with strong daytime demand often achieve the best returns of all, because most of what they generate is consumed on site.

Planning, Permitted Development and Listed Buildings

Most domestic rooftop installations in Wales fall under permitted development rights, but there are important exceptions in Pembrokeshire. Properties within the Pembrokeshire Coast National Park, conservation areas, or those which are listed face additional restrictions, and installations on a principal elevation facing a highway may require permission. Ground mounted arrays have size and siting limits, and larger solar farms require full planning applications supported by landscape, ecology and heritage assessments. Reputable installers confirm the planning position before quoting rather than leaving it to the customer.

Certification and Consumer Protection

Installers should be certified under the Microgeneration Certification Scheme, which is normally a condition of accessing the Smart Export Guarantee and provides a recognised quality framework. Membership of a consumer protection body offering workmanship warranties and deposit protection adds further security. Ask for evidence of electrical competence, appropriate insurance, and a clear warranty structure covering panels, inverter, battery and installation workmanship separately, since these often have very different durations.

Comparing Quotations Fairly

Quotations vary widely, so compare on equivalent terms. Check the total system size, the specific panel and inverter models, the estimated annual generation and the assumptions behind any savings calculation. Be cautious of projections based on unusually high self consumption rates or aggressive energy price inflation. Confirm scaffolding, electrical works, monitoring and building notification are included. Finally, ask about aftercare, because a system with no maintenance relationship can quietly underperform for years without anyone noticing.

Final Thoughts

Solar has moved from an environmental statement to a straightforward financial decision for many Pembrokeshire households and businesses. Panel costs have fallen, battery technology has matured, and electricity prices have made on site generation genuinely attractive. With a certified installer who designs for the county's coastal conditions and respects its planning constraints, solar is one of the most reliable investments available in the local energy market.