My design philosophy these days matches yours 100%, Allen. Because of cheap PV, and FLA batteries still stuck in the 1910s. It was a different story (not too many years ago!) when a good deal on PV was $5 a watt.......
Dan Fink Adjunct Professor of Solar Energy Technology, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Registered Continuing Education Providers™ 970.672.4342 On Fri, Oct 14, 2016 at 3:55 PM, Allan Sindelar <al...@sindelarsolar.com> wrote: > Dana (and I'm curious if others agree), > I used to work with 4-5 days of storage, back with modules were expensive > and batteries were relatively cheap. As in recent years these two have > reversed - modules are cheap and batteries are dear - my fundamental design > approach has changed. I now design around 2-3 days of storage with a larger > array, as long as there's a backup generator in the system. I size to at > least 100% of the projected winter average daily load. > > The batteries recharge more quickly, including on partly cloudy days > between storms. They spend more of their time full, thus keeping them > happier and giving them as much or more life, even with more and deeper > cycling. FLAs are easier to EQ, given the hotter charge rate. And the > customer spends less. > > You used to live in SW Colorado, a similar sunny winter climate. Is it the > same in Idaho where you live now? > Allan > > > *Allan Sindelar* > al...@sindelarsolar.com > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 <505%20780-2738> cell* > > >
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
