If LUMA forecasts that the following day’s power needs will exceed the available generation supply, a “CBES event” may be scheduled to make use of some of the renewable energy produced and stored by solar PV customers. CBES event occurs when all available generation resources are in use and the system is unable to meet forecasted energy requirements, as determined by LUMA in its responsibility as system operator. Each event only lasts a few hours.
Third-party aggregators, independent from LUMA, enroll customers and manage their participation. If an event must be initiated, aggregators are notified by LUMA. The aggregators then notify customers. Customers do not have to do anything, the aggregator manages the export of power from each enrolled battery system. Those systems send power from the customer’s batteries into their home or to the energy grid to increase overall supply. Only a portion of each customer’s stored energy will be exported during an event, to ensure the customer maintains a backup reserve. Customers may opt out of any event at any time with no penalty.