Interesting how many people in SF have solar
http://sf.solarmap.org/
http://www.sfsolarsubsidy.com/wp-content/uploads/2008/06/solar-incentive-description.pdf
They seem have changed the requirement
$3,000 back if you DIY
$4,000 for a SF based installer
$6,000 by contractors who graduated from SF's workforce development
(non-additive)
However if you somehow qualify as "low income" (granted that's kind of hard with a reef tank AND living in San Francisco

) but you can get an ADDITIONAL $5,000 back. So if I could find a way to work the system to qualify for PG&E's CARE (which I'd need to pull a couple semesters of really small loads, however it seems 1 person needs to make less that $30,500 which is doable hmmm) I could potentially get $8-11k rebated!