Stem, which describes itself as an intelligent energy storage firm, has bid into the California Independent System Operator (CAISO) real-time market via its aggregated customer storage systems. Stem’s predictive software is combined with Olivine’s platform to enable bidding and automatic dispatch of stored power to the energy market, according to the company.
The entry to the market came through participation in Pacific Gas and Electric’s Supply-Side Pilot (SSP), under which customer-sited, demand-side resources can participate in the CAISO wholesale markets.
Stem’s intelligent systems are installed at buildings and store energy acquired when costs are low. One customer is Adobe, which uses the system at its San Francisco campus.
PacificCorp utilities, the second biggest transmission system in the west, may be incorporated into the California grid, according to Utility Dive. If that happens, there will a sharing of energy generation between PacificCorp’s six states (with 1.8 million customers) and CAISO’s 30 million customers, who mostly are in California.