Pavel, V2G ( Vehicle to Grid ) concept is far from new and did not originate out of Elon Musks mind.  I invested in a Chinese company years ago that promoted the same concept, but there are many proposals of V2G involving many different companies from many different countries.  This idea has been around for quite a long time.   I will document this further on the Off Topic Forum where you can follow up with some links I will provide, but we are getting away from the main topics and I don't want to discuss it more on the Discussion Forum.  Please go to OT.  Thanks.  okiedo