It's still a waste. Round trip efficiency for splitting water, compressing it for storage, extracting energy through fuel cell is very low:
from wikipedia " Practical electrolysis (using a rotating electrolyser at 15 bar pressure) may consume 50 kilowatt-hours per kilogram (180 MJ/kg), and a further 15 kilowatt-hours (54 MJ) if the hydrogen is compressed for use in hydrogen cars.[21] <https://en.wikipedia.org/wiki/Electrolysis_of_water#cite_note-21> " One kg of hydrogen contains 33kWh of energy, of which the fuel cell can extract about half. So you put 65kWh in and got 16kwh out, at best. I don't know about you, but my roof only has room for so many solar panels regardless of their cost. On Thu, May 25, 2017 at 8:26 AM, 63urban via EV <[email protected]> wrote: > > > If hydrogen can be used as a battery then it would not be a waste as the > cost of solar comes down you have a use for excess capacity > Nick > > > Sent from my Bell Samsung device over Canada's largest network. > > -------- Original message -------- > From: Peri Hartman via EV <[email protected]> > Date: 2017-05-25 11:14 AM (GMT-05:00) > To: Electric Vehicle Discussion List <[email protected]> > Subject: Re: [EVDL] EVDL: Hydrogen - here we go again? (or maybe?) > > Perhaps at some point. However, solar panels are still expensive and > inefficient enough that it seems like a waste to convert their > electricity to hydrogen. If I remember correctly, you'll loose 50% of > the energy during that step versus maybe an 80% overall efficiency level > for an EV. > > Peri > > ------ Original Message ------ > From: "Robert Bruninga via EV" <[email protected]> > To: "Electric Vehicle Discussion List" <[email protected]> > Cc: > Sent: 25-May-17 7:55:48 AM > Subject: [EVDL] EVDL: Hydrogen - here we go again? (or maybe?) > > >Yet another “hydrogen future” article… > > > > > > > >http://www.triplepundit.com/2017/05/hydrogen-economy-for- > real/?utm_source=WEEKLY+TriplePundit+Mailing+List&utm_ > campaign=8544b4d04e-EMAIL_CAMPAIGN_2017_01_04&utm_medium=email&utm_term=0_ > 1d50d22c4a-8544b4d04e-220445429 > > > > > > > >But one thing did catch my eye. And that is the idea of SELF fueling? > >The > >#1 problem with Hydrogen is the complete lack of distribution network > >AND > >the complete lack of a clean source of Hydrogen. > > > > > > > >But what if we used the Ridiculously low cost of solar panels (now > >under 25 > >cents a watt) to generate electricity on our homes to then electrolyze > >water into hydrogen right at HOME? That solves both of the major > >hydrogen > >car problems (distribution and clean)? > > > > > > > >After blowing up a few homes, I would think that we could come up with > >suitable cheap and safe home electrolyzers and tank filler-uppers. > > > > > > > >This ALSO solves the growing problem of utility push-back killing > >net-metring concepts and forcing more and more people into the econimcs > >of > >home storage. If generating and storing hydrogen at home becomes an > >appliance, there might be a niche…? > > > > > > > >Bob, WB4APR > >-------------- next part -------------- > >An HTML attachment was scrubbed... > >URL: > ><http://lists.evdl.org/private.cgi/ev-evdl.org/ > attachments/20170525/9cd4fa9c/attachment.htm> > >_______________________________________________ > >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >http://lists.evdl.org/listinfo.cgi/ev-evdl.org > >Read EVAngel's EV News at http://evdl.org/evln/ > >Please discuss EV drag racing at 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 > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at 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/20170525/ce6161d2/attachment.htm> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/ > group/NEDRA) > > -- www.electric-lemon.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170525/d2f806f5/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
