Historical RE data now available...

[DamonHD]

Here is my simple table-per-month:

http://www.earth.org.uk/off-grid-stats-historical.html

It should get updated at least once a month, more when the battery has power that needs dumping around noon!

(Clearly the current month will always be partial.)

Rgds

Damon

[DamonHD]

I've been computing the stats for the longest gap for laptop off-grid

and wind power for most of October and November, and the worst gap for off-grid

(which is essentially a fairly-full solar PV battery charge)

is about 3 days in November and 5 days in October (strange that October is worse).

The implication is that a truly off-grid system would need 5 or more days

of battery capacity given my PV and siting though the average is ~1 day.

Wind is showing a gap of well over a week and ~1% availability,

which suggests that it really isn't a contender in my part of London.

Rgds

Damon