Sustainergy specialise in electrical Solar PV and Wind power, and offer the following services within this field:

  1. Installation / service (grid-connect or stand-alone)
  2. Retail (mail-order)
  3. System recommendations and advice
  4. Educational (teaching & workshops)

The service from Sustainergy was excellent. My solar array was installed efficiently, on time and with no complaints. Bob proved to be friendly, enthusiastic, extremely knowledgeable and thorough, and was able to design a tailor made system for my circumstance. He has reliably answered any queries I have had since, although there haven’t been many of these as the system has worked exactly as he said it would with no problems arising. I would heartily recommend Sustainergy to anyone considering renewable energy.

Sustainergy’s fundamental service is designing and installing Solar and Wind powered electrical systems, usually comprising of PV solar panels, wind turbines, control equipment and some specialist appliances (storage batteries for stand alone/off-grid systems).

Stand-alone/off-grid system installations involve providing an electricity supply to a building that previously either had none or relied on unsatisfactory power means (e.g. A house on the top of a mountain, noisy diesel generators or constantly interrupted supply).

With the Governments Feed In Tariff (FIT’s) programme SUSTAINERGY concentrates much attention on PV solar roofs, and did indeed install the FIRST DOMESTIC GRID-CONNECT PV SYSTEM (2KW) in West Wales. SUSTAINERGY works along side DECC/DTI’s regulating authorities to ensure that all PV installations are to the latest standards, both in terms of safety and performance. SUSTAINERGY are MCS accredited installers for both grid-connected and stand-alone (battery) PV Solar systems.

Associated with the MCS, SUSTAINERGY are also accredited Wind Turbine installers (having installed the first UK wind system through the Clear Skies scheme – for the explorer “Bear Grylls” on his North Wales island).

The business offers its technical expertise to schools and colleges who are interested in teaching this growing technology, and we also train up the end-user to be able to perform much of the annual service work.


Tons CO2 /year


Megawatts installed








Wind turbines capture the winds kinetic energy and transform it into usable electricity. The rotation of the turbine drives an alternator which generates



Otherwise known as PV’s or SOLAR PANELS; these are rectangular flat devices that face the sun and generate electric power from its light. The energy of photons is used to energise electrons in the PV’s laminations)



Battery systems tend to cost 10-20% more than grid-connected ones - mainly because of battery cost (and 10 yearly replacement) and sophisticated charging controllers.

About Us

Introduction to sustainable energy systems

Sustainable or renewable energy is energy that has been made without using up supplies of fossil fuels. It can be continuously made for ever and will never run out.

Examples are solar, wind, water (hydro, wave or tidal) and wood (biomass).

Usually this energy is made with absolutely minimal pollution or impact on the earth and thus is extremely environmentally friendly. Given the fact that the earth WILL eventually run out of polluting fossil fuels and that nuclear power is so environmentally dangerous, it seems highly likely that it is only a matter of time before the whole world will be exclusively running on renewable energy…



When we first installed our wind turbine some 6 years ago Bob got us comfortable with what needed to be done. He was well organised, clean tidy and professional. He has continued to offer exceptional customer service in his helpful attentive style. A pleasure to recommend Bob with his great skill and knowledge of all things sustainable.

J. Loo of Eco Barns, MathryJ. Loo of Eco Barns, Mathry

Bob at Sustainergy recently installed a 4 kW solar PV system on our roof. He took the time to design the installation around our existing velux windows to give us a really tidy look to the roof and the installation went very smoothly. We are very happy not only with the work but also the quality and specification of the different components used. I would highly recommend this company not only for the excellent service that we have received, but also for what I think is very good value for money.

J. George of CrymychJ. George of Crymych

Sustainergy have installed panels on two houses I have owned each time they have been excellent, on time, clean, efficient and the installations have stood the test of time. I would have them again.

K. Barnard of HaverfordwestK. Barnard of Haverfordwest

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