100thMonkey
Member
With a large battery pack, the daily average kW's used for the average 30 mile commute can even more easily be captured off peak by charging mostly at night, adding essentially no stress to the grid. Estimates by James Billmaier in his book Jolt http://joltthebook.org/ suggest that the current off peak waste of electrical generation is huge, just for want of a way to store excess off peak baseload we "throw out" enough capacity every night to charge tens of millions of electric cars. At a local EV gathering, we had someone from the local utility speak and I had a chance to verify this. He confirmed that without having to pollute any more, that we are already burning enough coal, running enough water through dams, splitting enough atoms etc to meet the needs of EV's for many years to come if they are mostly charged at night/off peak... and an 85 kW pack is prime for smart grid integration. It appears to me that EV's may offer the much needed missing link to grid stabilization.
Electric grid readiness may also be a bottleneck. I've read somewhere that the grid will only be able to support a 10% electric fleet by 2020.