Solar statistic of the day
Posted by Rich Sweeney on February 12, 2008
Average number of solar hours per day in sunny southern California: 5.5
That is from John Supp, of California’s Solar Initiative. What this means is that even in southern California, a PV panel produces at its optimum output only 22% of the time. In northern California this figure drops to 18% (4.5 hours).
While there have been a lot of exciting developments on the PV front in recent months, the practical realities remain discouraging. Unless we figure out how to store this energy (or how to make the sun shine longer), its going to be a long time before PV makes a significant dent in our coal/ natural gas consumption.
More to come on the economics of PV later today (I hope).