> Not all the cells made by the gigafactory are destined for vehicles. Some will end up in the company’s Superchargers, allowing Tesla to cope with sudden burst

> Not all the cells made by the gigafactory are destined for vehicles. Some will end up in the company’s Superchargers, allowing Tesla to cope with sudden bursts of demand should multiple vehicles need to recharge at once. Others will be used at Tesla’s assembly plants to store energy when it is cheap, typically at night, and release it when the price rises. This surprised me, but Wikipedia says Li-Ion efficiency is 80-90%, so I can see that being worthwhile.