Emergency generators and solar photovoltaic systems?
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From: NotMe on 31 Jul 2010 17:35 "AES" <siegman(a)stanford.edu> wrote in message news:siegman-5AF1F3.09005231072010(a)bmedcfsc-srv02.tufts.ad.tufts.edu... > OT question for any posters or readers of the exchange on emergency > power generators appended below: > > I have a 10 kW standard residential solar photovoltaic system on my roof > (no batteries or other added complexities). I understand that if PG&E > goes down it stops functioning, and more or less why this is. > > Suppose I acquired a small generator and had professionals install the > necessary (manual) switching to disconnect my house and the solar setup > from PG&E and connect them to the generator. > > Once this switch was thrown and the generator fired up, would the solar > system function normally while the generator was running? If so, what > size generator might be required? > without the storage of a battery system to buffer the load the PV system is subject to drop out. The mains act as a sink/source. As to PV and gen set alone I imagine that that could be done but the matching of the systems will be difficult. We have a place in the mountains in WNC that is totally off grid. With the exception of heavy loads (example washing) in extened cloudy days and periodic exercising we've not used the gen set in years. |