I have to disagree. Ask him on a day where his panels are producing more than he can use what extra value he is getting from them. Then ask him on a day where he is not getting enough from the panels how much it would have been worth to have batteries.
If you are taking yourself off grid, not only do the batteries (or other energy storage method) produce value, but may even be essential. Sent from my iPhone On Dec 23, 2014, at 6:48 AM, Robert Bruninga via EV <[email protected]> wrote: >> A 20-year T-bill right now is only paying about 2.5%... >> Even if it takes 20 years to pay off the battery system... > > Batteries are not a source of energy. They produce nothing. Solar panels > do. Far better to spend X dollars available for more solar panels which > pay off themselves in about 3 years and use the nearly free storage in the > grid. > > Self-storage (if you have access to the grid) consumes $2 out of every $3 > invested in Solar with zero benefit other than about 4 hours of backup > electricity a year (around here with a 99.96% reliable grid). That's > spending several thousands of dollars for about 60 cents worth of > electricity. > > If you don't have the grid, then sure, on-site storage is required. > > Oh, my zero-usage electric bill is an $8 fixed rate "meter" fee per > month, or $100 a year. That is renting a 10,000 kWh storage system (the > grid). Or about 100 kWh per dollar. Compare that with the 0.01 kWh per > dollar for batteries. > > A 10,000 times better deal if there ever was one. > > Bob, WB4APR > _______________________________________________ > 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)
