Yes, for that cost I'd agree. But that option was off the table for the OP (who has now reconsidered). If you are excluding the grid, storage may have more value than more generation capacity.
Sent from my iPhone On Dec 23, 2014, at 10:29 AM, Robert Bruninga via EV <[email protected]> wrote: >> If you are taking yourself off grid, not only do the batteries >> produce value, but may even be essential. > > Sure, but at 10,000 times more expensive than using the grid? > > Of course you need maybe 4 car batteries to keep your refrigerator and > lights on during an overnight power outage, but it is crazy to throw any > more money away trying to store up to maybe 60 kWh per day in batteries > (costing say $12,000) when you can store it in the grid for a few dollars > rent a month. > > Bob. > > 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) > > _______________________________________________ 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)
