When severe weather is forecasted, the EDCs will provide 48 hours advance notification that passive events and scheduled active events are cancelled until the impacts of the storm have passed.
The Distributed Energy Resource Management System provides dispatching to BESS for scheduled active events. The DERMS vendors will communicate to the BESS “last mile” contractor via a secure API or open ADR connection. The BESS will also communicate battery data to the DERMs in order to verify battery performance for passive and active dispatch performance and compensation.
Active dispatch and passive dispatch should be unnoticeable to customers.
The EDCs will communicate the override or cancellation of passive events via the DERMS. How the batteries are used during the outage will be up to customers.
The criteria is typically based on the ISO NE three-day forecasts but there are other variables that need to be considered. Typically, the EDCs expect events to have a duration of 2-3 hours. This allows the best probability of impacting the targeted ISO hourly peak
We do not anticipate there will be many events called with less than 24-hour notice. When that happens, that event will not be counted in the calculation of average performance.
During the dispatch seasons, the customer cannot override the system during passive events, as that will affect program compliance. The customer can override the active dispatch by not participating or curtailing during an active event.
The active dispatch expectation is that 100% of the battery’s available capacity will be dispatched during the event timing. Available capacity is the full battery discharge capacity that will not void the customer’s battery warranty.
The passive dispatch requirement is that the battery will be discharged down to a 20% state of charge (SOC). If the battery is not fully charged at 3 pm, there should be 20% reserve left in the battery after the passive dispatch windows is over.
Non-performance in passive events during the 10-year participation of the program will result in non- compliance with program requirements and the customer will be required to return a prorated portion of the un-earned incentive. This claw back evaluation process will commence at the end of the summer season. The evaluation will determine whether a participating BESS responded to greater than 90% of the passive dispatch hours at the enrolled level with the expectation to uniformly dispatch 80% of useable energy over the 5-hour passive dispatch window. The first year that the system is non- compliant with this threshold, the customer will be responsible for returning 10% of the upfront incentive (“Violation Fee 1”). Upon the second year of non-compliance, the customer will be charged a second fee equal to a pro-rated amount of the upfront incentive based upon remaining years in the program (“Violation Fee 2”). After Violation Fee 2, the customer will no longer be considered a participant in Energy Storage Solutions. If the customer does not pay the violation fees as described above, performance incentive payouts will be swept by the Green Bank until the cost of the violation fee is recovered. If no performance incentive payouts are available to be swept, the customer will be billed by the Green Bank. If the customer is able to demonstrate a valid reason for non-compliance (e.g. manufacturer recall), they may appeal the Violation Fees to the Green Bank directly. The Green Bank, Eversource and United Illuminating will investigate and will notify the customer in writing whether the penalty is upheld.
If the battery is not available for the active events during the 10-year participation of the program, there is no penalty, but the performance-based incentive will be reduced.
Passive dispatch requires customers to discharge batteries reserving 20% of rated battery capacity during the passive dispatch hours. Customers are requested to discharge full available battery capacity when called for active dispatching.