The roof over the rear of the homes is at a 22 degree angle in order to maximise the south facing potential of the home. Also, as the the sun angle during winter is 20 degrees at midday, a 22 degree roof pitch maximizing the operating potential of the PV and solar thermal panels during the winter months when the sun is weaker.

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Fact 33

40% of people hope that by 2050 wasting energy will be considered the most socially unacceptable ofbehaviours.
Source: Energy Saving Trust 2008