Residential Solar Power Cost in California by sadmin

Posted on Tuesday, December 7th, 2010

Go Solar California — a collaborative effort of the California Energy Commission and the California Public Utilities Commission — maintains some pretty interesting statistics on the state’s solar energy market. Among the most interesting data are numbers on the average cost of solar installations in California.

A quick peek at residential solar cost numbers reveals that, as advertised, the price of solar home energy systems has come down considerably since 2006, when California started tracking cost information from solar rebate applications. (The yellow line represents 2010; the blue line represents all years, 2006-2010.)



Note that these solar costs are pre-incentive cost and are reported in terms of DC wattage. As you can see, solar home energy installations that cost $7-$8 per watt DC have been the most numerous in 2010. Compare that to the $8-$10/watt range seen in 2006, 2007, 2008 and 2009, and you’ll understand that the cost of solar power has come down considerably in just a few years.

Note too, however, that the post-incentive cost of residential solar energy systems has likely not decreased much at all. This is because California solar rebates have been reduced over time, as well. While the pre-incentive cost in 2010 is less than it was in 2006, in other words, the solar rebate available in 2006 was comparatively bigger. So, in the end, a homeowner in 2006 probably paid as much — if not less — for their solar home energy system than you might pay today. Regardless, solar power is still a great option for homeowners in California and beyond!

To check out more fun numbers, be sure to check out Go Solar California’s database.

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