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Forum Index : Solar : actual data, solar watts made per day

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rgormley
Senior Member

Joined: 22/02/2006
Location: Australia
Posts: 245

Posted: 05:45pm 26 Mar 2009

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Has any one got some real logged data (in melbourne)
of the amount of kw`s produced per day, say over the last month? on a 1 or 2kw solar setup

perhaps a dump of data from a fronius?

Cheers,
Richard

GWatPE

Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127

Posted: 07:11pm 26 Mar 2009

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Hi Richard,

I have solar insolation levels logged from my Davis weather station. I am at latitude 35.5, on the South coast near Victor Harbor. I base my solar as more similar to Melbourne than Adelaide. I have plotted incident solar as W/m^2 and the daily solar energy as Ly. The green jagged trace is the incident solar and the yellow bar graph is the daily energy. The peaks above 1000 are from reflected light cloud effects.

There are 4 charts of a weeks data each.

I have found that the solar array output follows the solar energy closely, so I don't bother to record daily solar power output any more.

The BOM should have incident solar levels for Melbourne. You will need to integrate this data over a day and scale it to get the solar energy.

You will get the idea of the effect of clouds with output electricity produced.

Gordon.

PS edit: for example the solar power that my 2.4kW array produced on the 24/03/09 was 2.1kWhr. The lowest I have recorded was in 2006, with 0.1kWhr on one day.Edited by GWatPE 2009-03-28

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