Monthly Archives: August 2011

Which type of PV panel should we use?

There are three types of panels:- Monocrystalline  efficiency: 13-17%  space needed / Kw  6 – 8 sq m Polycrystalline    efficiency: 11-15%  space needed / Kw  7 – 9 sq m               Hybrid                  efficiency: 17%        space needed / Kw  5-6 sq m … Continue reading

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Solar Thermal do the numbers work?

We’ve had the Solar Thermal (ST) system in for 5 months and I’ve tried to get a view on the energy saved. We use a conventional (non-condensing) gas boiler to heat our water and by definition it’s not very efficient. … Continue reading

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