I think pumped storage is more efficient. At least it is according to wiki page:
http://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity which reports practices typically between 70% and 80%. I read one article last year sometime expounding on the possibility of using abandoned coal mines for pumped storage. Sounded good to me: no flooding of habitat, not dependent on a mountainous area. Peri -----Original Message----- From: ev-boun...@lists.evdl.org [mailto:ev-boun...@lists.evdl.org] On Behalf Of Chris Meier Sent: 14 March, 2014 4:56 PM To: Electric Vehicle Discussion List; Michael Ross Subject: Re: [EVDL] EVLN: Spark EV @a fraction of the price of a Tesla-S,review There can be overall efficiency improvements, if a peaking power plant is replaced with a 'baseload', and excess used to make hydrogen. Keeps the utilities in the game a little longer. Buy solar. Wish I had a spark with fast charge. -in MN On March 14, 2014 10:57:03 AM CDT, Michael Ross <michael.e.r...@gmail.com> wrote: >Peri, > >I was really just referring to the fact that hydrogen is not a source >of >energy. You have to do some work to get it, Far more than you have >to >when you oxidize a hydrocarbon. > >As you say, electrolysis is a poor way to store energy as H2. And, we >currently burn hydrocarbons to make most of the electrons used to for >cracking water. A bad trade off. In the building next to my lab is a >hydrogen electrolyzer that runs off of a thin film solar PV roof >generation >system. An incredibly expensive and silly set up IMO. > >Anyway, people insist on referring to hydrogen as an energy source, but >they are only looking at the end use. In reality the hydrogen is being >used to transport the energy from some other energy source (an electric >power plant) to the end use - and with lots of inefficiency however you >do >it. Petroleums are a really good transport mechanism except for all >those >stray nitrogen, and carbon compounds. > >We are probably lucky in an existential sense that it is hard to get H2 >out >of water. But, there you have it, it is hard to get H2 out of water. > Electrons generated from fusion energy would do it cleanly. > > >-- >Put this question to yourself: should I use everyone else to attain >happiness, or should I help others gain happiness? >*Dalai Lama * > >Tell me what it is you plan to do >With your one wild and precious life? >Mary Oliver, "The summer day." > >To invent, you need a good imagination and a pile of junk. >Thomas A. >Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> > >A public-opinion poll is no substitute for thought. >*Warren Buffet* > >Michael E. Ross >(919) 550-2430 Land >(919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google >Phone >(919) 631-1451 Cell >(919) 513-0418 Desk > >michael.e.r...@gmail.com ><michael.e.r...@gmail.com> >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140314/32f835b d/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) -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140314/534d94ab /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) _______________________________________________ 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)
