Fresno water facility brings earth-mounted solar system online

ForeFront Power’s Erthos installation is part of a 27-MW portfolio designed to reduce structural and civil costs at three city utility sites.

ForeFront Power announced commercial operation of an earth-mounted solar system at Fresno’s Northeast Surface Water Treatment Plant. The Erthos Earth Mount Solar design places modules directly on the ground, allowing the project team to reduce the structural-steel and racking work normally associated with a ground-mount array.

The installation is one part of a three-site solar-and-storage portfolio developed for Fresno’s Department of Public Utilities. The combined portfolio totals 27 MW-DC and is expected to save more than $122 million in ratepayer dollars by 2045.

The Fresno system entered commercial operation in late March 2026, had delivered 862 MWh, and was operating at an average of 101% of expected energy production at the time of the announcement. Those results are project-specific; the broader takeaway is that alternative mounting designs can change the cost and land-use assumptions considered during public-infrastructure planning.

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