The first fully off-grid solar airport in the U.S.
An airport that had to run on sunlight.
Cal Black Memorial Airport sits at Halls Crossing on the southeast shore of Lake Powell, the aviation gateway to the Glen Canyon National Recreation Area. The field ran on a legacy power conversion system with partial solar and frequent diesel generator hours, and the municipality set a hard goal: run the entire airport on solar and battery.
A stand-alone microgrid for a mission-critical field.
NewGrid delivered a turnkey off-grid microgrid in 2025: a new solar array, a 204 kWh lithium battery bank, 45 kW of Sol-Ark power conversion, and dual diesel generators held on standby duty, budgeted for fewer than 100 run-hours a year.
- 45 kW solar
- 204 kWh Discover AES rack-mount lithium battery
- 45 kW Sol-Ark inverters
- Dual 60 kW diesel generators
- 120/240V split phase
Uninterrupted power, no utility line.
Live since July 2025, the system has powered every airport operation without interruption. It is the first fully solar-powered off-grid airport in the United States, and a working model for critical infrastructure beyond the reach of the grid.
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