3 ms·
> One other data-point: daily output averaged to 29.8 kWh, from this 7.56kWh array. This is useful information that is surprisingly hard to find: if I install
by nkurz 4y ago
> One other data-point: daily output averaged to 29.8 kWh, from this 7.56kWh array.
This is useful information that is surprisingly hard to find: if I install panels with a nameplate rating of x kW, how many kWh will I generate per day? In Bruenig's case the multiplier is just less than 4x.
The linked page provides a widely available map for "Peak Sun Hours" (defined as average hours per day greater than 1000 W/m^2 of sunlight), but it's not immediately clear how this relates to the multiple. In theory, you could figure out the efficiency of the panels and their area, but this still doesn't account for the actual curve of sunlight intensity.
Bruenig is (I think) in Connecticut, which according to the map has 4.2 Peak Sun Hours, which is only a little greater the the measured rated kW to kWh multiplier. Is it safe to assume that the "Peak Sun Hours" is always slightly more than the multiplier? Or is there a more better map somewhere that shows this conversion directly?