Halcyon Grid / Coastal Microgrid Ops
Why it moved. Coastal fog cleared at 11:20, lifting the Pelican Bay array from 41% to 88% of nameplate inside forty minutes. Feeder 7 absorbed the swing without curtailment; the remaining surplus went to the Ashgrove flow batteries at a blended charge price of $18.40/MWh.
Feeder 7 rebalanced — 12.4 MW shifted to Ashgrove bank B.
Inverter A-19 temperature 71°C, derating to 82% capacity.
Peak of the day recorded: 341.2 MW across all interties.
Kestrel Ridge wind farm back online after blade inspection.
Breaker 4C tripped on Millpond lateral. Auto-reclose in 8s.
Day-ahead bid accepted at $41.20/MWh for 60 MW block.
Fog burn-off detected at Pelican Bay. Output +47 MW.
Voltage sag 0.94 pu on Harborline, cleared in 340ms.
Crew Tamsin R. logged maintenance close-out on TX-22.
Storage arbitrage window opened. Charging 4 banks.
Morning ramp complete — 212 MW served, zero curtailment.
Nightly firmware sync finished on 84 field controllers.
Hot paths carry the surplus from Pelican Bay into Ashgrove Hub, where the flow batteries buffer it before release onto the Harborline feeder. Eastgate remains islanded pending relay recertification on 22 July.
The evening ramp is forecast to hit 372 MW at 19:10, roughly 9% above the same weekday last month. Amber bars are served locally; teal bars indicate blocks expected to draw on the Eastgate intertie.
| Asset | Type | Status | Output | Capacity | Uptime |
|---|---|---|---|---|---|
| Pelican Bay Array | Solar PV | Nominal | 118.6 MW | 88% | 99.99% |
| Kestrel Ridge | Wind | Nominal | 74.2 MW | 61% | 99.71% |
| Ashgrove Flow Bank | Storage | Discharging | 52.0 MW | 72% | 100.0% |
| Millpond Hydro | Run-of-river | Derated | 41.8 MW | 54% | 98.40% |
| Driftwood Biogas | Thermal | Nominal | 21.4 MW | 79% | 99.88% |
| Eastgate Intertie | Import | Islanded | 0.0 MW | 0% | 94.12% |
Hold the Ashgrove banks above 55% through the evening ramp.
Eastgate stays islanded until relay recertification clears, so every megawatt of the 19:00 peak has to come from inside the fence. Charge on the fog-clear surplus, then coast. If Millpond stays derated past 16:00, page Marek before you lean on Driftwood.