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How much room needed


Russell griffiths

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Just looking for some very rough answers

trying to make sure I have enough room on the roof for some panels

3 bed house 206 square m ground source heat pump most normal things in the house nothing special 

 

what sort of amount of room will the panels take up

 

i know i haven’t given a lot of information but I’m just after a rough idea. 

 

Thanks russ. 

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Most panels are around 1.0m x 1.6m, at 285w per panel with 20mm between panels you need about 6m2   per kWp output. You cannot have panels higher than ridge line and for the usual fixings you stay about 0.5 m away from other edges, although fixings are available to go right up to the edge (wind uplift problem).

 

@Russell griffiths 1kWp will yield about 900kWh/year but do not expect any significant output when you need the heat pump for space heating. Maximum production will be 7-8kWh/kWp/day in May/June. Dec/Jan might average 0.8-1.0kWh/kWp/day with frequent zero days

Edited by A_L
to add output info
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