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Solar PV direction / time of year / angle
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<blockquote data-quote="binky" data-source="post: 540362" data-attributes="member: 490"><p>so, if you had variable tilt of the panel array, you are also going to have to leave suffcient gaps between rows of panels to prevent shading from one panel to another. That in turn means you effectively have less roof space to use as even something like a 15deg tilt means you need a gap of around 400mm between rows. Ergo, any efficency gain is almost certainly wiped out by losing array size, and the cost and complexity of building such a system I seriously doubt would merit the expense, time and hassle. </p><p></p><p>N roof, ok it's just the cost of the panels, according to MCS guidelines, panels facing north on a 40deg pitch will generate around 400KwH per annum, per kW of panels fitted, which is not a lot! And most of that will be during the summer of course.</p></blockquote><p></p>
[QUOTE="binky, post: 540362, member: 490"] so, if you had variable tilt of the panel array, you are also going to have to leave suffcient gaps between rows of panels to prevent shading from one panel to another. That in turn means you effectively have less roof space to use as even something like a 15deg tilt means you need a gap of around 400mm between rows. Ergo, any efficency gain is almost certainly wiped out by losing array size, and the cost and complexity of building such a system I seriously doubt would merit the expense, time and hassle. N roof, ok it's just the cost of the panels, according to MCS guidelines, panels facing north on a 40deg pitch will generate around 400KwH per annum, per kW of panels fitted, which is not a lot! And most of that will be during the summer of course. [/QUOTE]
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Solar PV direction / time of year / angle
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