Do solar electric panels need to be UL listed in California for residential installations?
Does anyone know if solar photovoltaic panels need to be UL listed in California for residential installation? Does a UL listing affect state or federal rebates? Are there any insurance issues with UL or non-UL PV panels installed in California?
To get the state rebate, you must be compliant to local building codes, which means the NEC (National Electrical Code) in most places (see article 690 of the code in your library). The NEC says that you need the UL listing. Also, it must be a grid-tied installation, that is, displacing grid power. More info at
http://www.gosolarcalifornia.org/
The federal government doesn't specify UL listing. If you lived in an area that was lax about that, you would still get your federal rebate.
If you're going off-grid (batteries) in a cabin, the UL listing doesn't matter (no rebate), and you can save significant dollars by getting panels that are "seconds" from a place like sun-elec.com
EDIT: I yield to dave123. That's right, UL is not specifically required. But if you buy the cosmetic defect panels from sun-elec, they will have their certification removed. I know a number of people that used them, though, and never any problems. I'm not advocating breaking the law, but must say, when the inspector looked at our panels, he did not not look for the certification sticker on the panels. Our panels were factory prime, but nevertheless, no one checked.
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