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But, Sandbar Solar owner Scott Laskey knew, when he decided to buy undeveloped land and build a new office and warehouse, that electricity from the utility, PG&E, would be costly. It’s unusual to invest in an off-grid system right in the middle of a city at Sandbar Solar, there’s a PG&E utility pole right across the street, barely fifty feet from the company’s new building. Most importantly, the HOMER Pro modeling assured project owners that the combination of PV and batteries could produce enough power for the building most of the time.
#Homer pro generator#
The city of Santa Cruz had concerns about resiliency and safety, and didn’t want the generator to be the primary power source for the facility.
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Using HOMER Pro modeling, Ageto Energy was able to determine the optimal generator size and produce HOMER Pro reports to demonstrate to city officials during the design phase that the generator would only need to run 200-300 hours per year, specifically during prolonged periods of cloudy winter weather. Peter Lilienthal said, “We’re happy to see the role that HOMER Pro is playing in enabling this industrial building to operate entirely off-grid using mostly renewable energy resources.” The microgrid consists of a 59 kW rooftop PV system, three Avalon flow batteries that can supply 30 kW of constant power over a three-hour period, a 60 kW natural gas generator, and microgrid control software developed by Ageto Energy. The islanded off-grid electricity system, which was modeled using HOMER Pro, is designed to serve the solar installer’s complete electricity needs, providing power to an 11,500 square foot warehouse and office. Image: Sandbar Solar, in Santa Cruz, CA, goes off the grid with a new microgrid modeled by HOMER Pro software. Sandbar Solar, a Northern California solar developer and contractor has unveiled a new microgrid to power their newly constructed corporate headquarters in the middle of the city of Santa Cruz, one of the few projects of its kind in the US.