These are Tesla’s main rivals in energy storage
SAN FRANCISCO (MarketWatch)—Tesla Motors Inc. may be taking its time to become a virtual power plant offering batteries to home and businesses, but that doesn’t mean investors with an eye on the sector have to wait.
Storage is widely viewed as a key to more widespread use of renewable energy. Batteries could pick up where renewables sometimes leave off—the sun does not always shine, and the wind does not always blow.
What many fail to take into account, however, is that storage already plays a role in our century-old power grid. Companies big and small, old and new have waded into the arena of energy storage.
