EVs can power the grid. Why aren’t more of them doing it?

# Your EV Battery Could Make You Money—If the Infrastructure Catches Up Electric vehicles can now send unused power back to the grid during peak demand, earning owners thousands of dollars while helping prevent blackouts—but the expensive chargers needed to do this (often over $20,000) and lack of widespread programs are keeping the technology from taking off. A few pilot programs in California and Massachusetts show the potential: one Massachusetts pilot could pay EV owners $3,000 this summer alone, and GM's existing fleet could theoretically power San Francisco for two days. For this to become common, the cost of the special chargers needs to drop and more utility companies need to set up programs that let people participate.