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Article #106Re: OT: Emergency generators and solar photovoltaic systems?
From: AES
Date: Sun, 01 Aug 2010 00:39
Date: Sun, 01 Aug 2010 00:39
37 lines
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3529 bytes
>> Once tthe generator fired up, would the solar >> system function normally while the generator was running? >> What size generator might be required? > A fucking big one. Why is that? My naive understanding is that so far as the solar installation is concerned, the 110 volt AC signal from the local utility is needed primarily to drive or, more precisely, to synchronize the 60 Hz DC->AC conversion taking place in the solar system inverters; so maybe a small generator would be enough for this? On the other hand, I can understand that a small generator not be able to handle (i.e., either reject, or soak up) the excess power coming from the solar system, if that power was substantially larger than the power I was actually drawing off to meet residential needs, say during mid-day hours? > And don't plan on being able to sell them your excess. Under current policies, I can't sell them excess now __averaged over a year-long averaging period__. But, I can sure __deliver__ excess power to them during sunny but low-usage summer days, and that excess generation gets counted against my excess usage of utility power on gray winter days. I get a monthly statement from the local utility, noting the net balance (that is, total energy used minus solar energy generated) each month; but don't have have to pay anything until a once-a-year year-end "true-up", when I pay the net owed them if positive, but can't collect anything if negative (which it hasn't been yet). Net owed at the end of the year has to date been down in the range of 10% to 15% of previous total yearly bills. [Still hoping to maybe get some intelligent answers to original query.]
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X-Google-Thread: 110038,f35d7f214e6ebb35 X-Google-NewGroupId: yes X-Google-Thread: f9250,5dc541db3c8c4527 X-Google-NewGroupId: yes X-Google-Thread: 104fd2,5dc541db3c8c4527 X-Google-NewGroupId: yes X-Google-Thread: fa874,e5f42faf3ca79ee X-Google-NewGroupId: yes X-Google-Attributes: gidd668eef4dc,gid5695fe328a,gide43d82042,gidaa617e85ca,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!news.glorb.com!usenet.stanford.edu!siegman From: AES <siegman@stanford.edu> Newsgroups: alt.cellular.attws,alt.cellular.cingular,alt.internet.wireless,ba.internet Subject: Re: OT: Emergency generators and solar photovoltaic systems? Date: Sat, 31 Jul 2010 17:39:51 -0700 Organization: Stanford University Lines: 37 Message-ID: <siegman-6016EE.17395131072010@bmedcfsc-srv02.tufts.ad.tufts.edu> References: <osk0561hjli19tfrgtu12b80anh8i5dj4r@4ax.com> <Xns9DC38F616A32Anoonehomecom@74.209.131.13> <i2ratc$tt7$1@news.eternal-september.org> <slrni52s9n.3sf.dcferguson@akit-ferguson.com> <3723561um0afo49klm46v2hd0cftv2s02h@4ax.com> <WYg4o.45954$YX3.29653@newsfe18.iad> <higgy-3793A3.12250429072010@news.announcetech.com> <i2sntq$udo$1@news.eternal-september.org> <higgy-ABE0C1.23345229072010@news.announcetech.com> <i2ubtr$t96$2@news.eternal-september.org> <usm556dg9jo79qvdsk1d9ckdv37nolnrcp@4ax.com> <Xns9DC5C2F6F85CDnoonehomecom@74.209.131.13> <higgy-733304.22355230072010@news.announcetech.com> <siegman-5AF1F3.09005231072010@bmedcfsc-srv02.tufts.ad.tufts.edu> <4c5496da@news.x-privat.org> <IP-dnYDmFtUNCsnRnZ2dnUVZ_hKdnZ2d@speakeasy.net> X-Trace: usenet.stanford.edu 1280623233 22431 127.0.0.1 (1 Aug 2010 00:40:33 GMT) X-Complaints-To: action@cs.stanford.edu Mail-Copies-To: nobody User-Agent: MT-NewsWatcher/3.5.2 (Intel Mac OS X)