They say that LG Chem is selling batteries for the Volt and Bolt for $145/kwh. Companies are buying used batteries for $100/kwh.
BMW and GM have pilot projects for used batteries combined with solar and wind and also used in cooperation with electric utilities for demand smoothing.
"Ultimately Tesla and GM and the other major EV companies are going to sell hundreds of thousands of vehicles over the next few years with battery packs that cost as little as $145/kWh. That means a staggering amount of low-cost used batteries will be available by the middle of the next decade.
When the trickle of second-life batteries turns into a flood, the business of electricity storage and demand response — both of which enable far deeper penetration of renewable power — will never be the same."