S-Power Energies (Letchworth Garden City): S-Power Energies, based in Letchworth, offer a no nonsense, professional approach to designing and installing both domestic and commercial solar pv. All systems are designed and installed by fully qualified engineers with many years experience throughout Europe. A survey of your property is necessary to determine not only your requirements, but also to ensure your property is structurally sound and suitable for solar pv. We can offer flexibility in product choice, and will aim to maximise the potential of any system offered to ensure you gain the most from your investment.