However, you are very lucky that your peak need correlates exactly with your peak generation. In any part of the country where winter heat is required, I think Robert's assertions are largely correct. Our peak needs correspond with the season of least generation. The temperature gap in summer is 20-40 degrees (80 degrees to 100-120 degrees). In winter, the temperature gap can be 70-95 degrees (70 degrees to 0 - -25). Yes, I've experienced -25 a number of times.
Add in the chance of cloudy weather, and solar gets very difficult in the winter. We haven't seen the sun here in over a week. Mike On January 9, 2015 4:05:18 PM MST, Ben Goren via EV <[email protected]> wrote: >On Jan 9, 2015, at 2:09 PM, Robert Bruninga via EV <[email protected]> >wrote: > >> But NOT for the typical modern non-FOSSIL FUEL BURNING all electric >homes >> with AC and Electric Heat pumps... IE, if a home continues to burn >fossil >> fuel for heat, Oil, and Propane, then we have not fully switched to >> renewables. > >You might want to run the numbers. > >I live in Arizona which is fantastic for generation...but it also means >an AC load in the summertime that most can't imagine. We'll go for >months at a time not only with the daytime high over 100°F (sometimes >pushing 120°F or more), but with the overnight lows in the 90s, >sometimes upper 90s. As in, you can step outside at seven in the >morning and it's already 100°F, or be lounging around at ten at night >with it still 110°F outside. > >I have about a quarter of my quite modest two-bedroom one-bath home's >roof covered in panels (both PV and hot water) and I generate half >again as much as I use -- enough to also power a future EV. My generic >and modest subdivision, which has lots of apartments and thus one of >the higher densities in the city, could not quite power the whole city >if every square inch of rooftop was covered with panels. Insane >summertime AC load and all. > >And, yes, again: not going to happen in Manhattan. If you live in >Minnesota, you might still need gas to survive the winter...but why >should the perfect be the enemy of the good? Far better to burn (less) >fossil fuels for three months out of the year than to keep burning the >same amount year-round.... > >b& >-------------- next part -------------- >A non-text attachment was scrubbed... >Name: signature.asc >Type: application/pgp-signature >Size: 801 bytes >Desc: Message signed with OpenPGP using GPGMail >URL: ><http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150109/8f47fa7c/attachment.pgp> >_______________________________________________ >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >http://lists.evdl.org/listinfo.cgi/ev-evdl.org >For EV drag racing discussion, please use NEDRA >(http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
