On 11/09/2019 09:11, Chris Hogg wrote:
On Wed, 11 Sep 2019 08:57:01 +0100, Tim Lamb
wrote:

In message , Steve Walker
writes
Not necessarily.

https://www.telegraph.co.uk/news/ear...0996273/Most-s
olar-panels-are-facing-the-wrong-direction-say-scientists.html

My known mathematical limitations or Telegraph?

Average production 3700kWhr/yr at 14.38p/kWh = £785?

But from the householder's POV, e.g. Harry, they should be oriented S
to get the maximum sunshine/electricity. AIUI the proposal that they
should be E or W is to spread their output through the day for the
benefit of the grid: one house has them E, the neighbour has them W
etc.

That's not quite what it says. Part says that it produces more power
during the day, as well as being at more useful times.

Admittedly, the article is not clear whether the more per day is only at
certain times of year or averaged through the year. Hence why I put "not
necessarily".

SteveW