Backup Power in PSPS Zones - Interconnection Discussion Forum
This discussion forum covers topics such as solar-only charging under new NEM-paired storage rules, non-export backup generators, and the concept of queue jumping for critical facilities. Considerations for interconnection applications, scrutiny levels for backup generators, and expediting study timelines are explored.
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Presentation Transcript
Backup Power in PSPS Zones Interconnection Discussion Forum December 16, 2019
Solar-Only Charging Under new NEM-paired storage rules, a battery is a NEM- eligible generator if it is certified to charge only from solar. When a PSPS event is announced, customers should be allowed to charge from the grid in preparation for the blackout. This can be managed by the aggregator so that customers do not have the ability to change operating modes on their own. The UL CRD for Power Control Systems will need to be updated. We need to consider whether tariff changes are needed.
Non-Export Backup Generators Is an interconnection application required for a natural gas generator that is only used for backup and never operates in parallel with the grid? What level of scrutiny is needed for a microgrid that is only used when the grid is down and never operates in parallel with the grid?
Queue Jumping It may be appropriate to process applications for backup power for critical facilities faster than typical timelines. Queue jumping may be infeasible because the interconnection queue determines cost responsibility for grid upgrades. For applications that are not interdependent on previously queued projects, can the utilities commit to expedited study timelines and add dedicated staff resources to accomplish that?
