Community microgrid with solar and storage
This community microgrid BESS single line diagram shows a resilient 480 V bus supplied by utility power, solar PV, battery storage, and a standby generator. A point-of-common-coupling breaker defines the grid connection. In an outage, the grid-forming PCS can establish the local bus while the battery, solar inverter, and generator support the dedicated critical feeder.
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Scenario
A resilience hub combines solar, storage, and standby generation to keep essential community services operating through a grid outage.
Key decisions
- The PCC breaker creates a defined utility-to-microgrid boundary.
- A grid-forming PCS supports the 480 V bus during islanded operation.
- The solar inverter provides renewable generation to the same bus.
- A 400 kW generator supplies extended outage support.
- The critical feeder limits island operation to shelter and grocery loads.
When to reuse this
Use this architecture for a small resilient microgrid where not every site load must be backed up. Islanding controls and generator paralleling requirements require detailed engineering.
Frequently asked questions
What makes the PCS grid-forming?
Why include a generator?
Can all loads be backed up?
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