Hi Robert and All, I've found the monthly utility fee covers the battery, generator cost to go offgrid in most places. Some charge $50/month just to stay ongrid. As the generator is set up for heat production cogen saves even more. Unless it has a 20 mile battery range the hybrid are going to be running their motor ineff compared to a dedicated generator, battery. Now real EV's this works best as a lot more capacity to work with. I ran my home for 3 days from my lightweight EV's with power coming back on just as I was going to have to recharge them somewhere else. And you should push lowering the home load first, especially a 5kw water heater, is just not bright. Jerry Dycus From: Robert Bruninga via EV <ev@lists.evdl.org> To: ev@lists.evdl.org Sent: Friday, February 6, 2015 11:48 AM Subject: [EVDL] EV/Hybrid-to-home emergency power Am preparing a talk for this weekend about the unbelievable economics of solar power where I always stress the economics all comes from the absence of any BATTERY storage expense and the 95% efficiency of grid-tie and annual storage in the grid.
But after several slides bashing how un-economical batteries are compared to grid-tie, I also then shift over to the HUGE free battery that comes in your hybrid or EV. Now you have a whole-house sized battery and it is off-the-shelf compatible with the high voltages of grid-tie solar! A perfect marriage. And now finally some high voltage input ISLAND inverters are starting to come available for this VERY obvious home-power market. Here are some kits for emergency power from Prius-to-home in the 2 to 5 kVA class. (You’d need the 5 KVA to run the electric water heater)… http://www.converdant.biz/plug-out/ Just wondering if anyone has one of these. They claim to have eliminated the gournd-loop issue they had in early models. I am not at all interested in 48v or such off-grid inverters or UPS conversions. I want 200-500 VDC input and 240 VAC output because these then are perfectly compatible BOTH with my solar system raw voltages AND with the hybrid or EV. This is the perfect Armagedeon backup system since one will have the infinite supply of energy from the sun with the solar. One would have the infinitie supply of transportation fuel (solar) with the EV, and the whole-house storage is in the EV battery. And as a side benefit, you can DRIVE your battery and inverter over to help out anyone else that needed some power for a while. In long term outages (or Armagedon) gasoline is the first thing to run out of after all the bullets. Solar, and EV’s make one self-sufficient forever (… to the life of the EV battery)… AND has anyone hacked the HV quick-charge sockets on most EV’s that connects directly to the battery? Bob, WB4APR -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150206/4097bd00/attachment.htm> _______________________________________________ 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150206/5e58877f/attachment.htm> _______________________________________________ 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)
