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Rosendin Rosendin

Riverside County, CA

Athos I & II

Project Summary

Rosendin was contracted by subsidiaries of SB Energy US Holdings One, Inc. (SB Energy), a renewable energy corporation and a subsidiary of SoftBank Group Corp, to design and build the $750 million project, which covers nearly 5-square miles in Riverside County.

The combined 641MWdc/450MWac Athos I and Athos II solar installations have the capacity to generate over 2,200 GWh per year of renewable energy, enough to power 179,000 homes and offset 1.7 million tons of carbon dioxide emissions annually.

Athos is one of the largest renewable energy projects in California, incorporating 1.48 million First Solar Series 6™ photovoltaic (PV) modules on a 3,440-acre* land parcel, located approximately 75 miles east of Palm Desert in a small town called Desert Center.

Rosendin employed over 400 employees and union contractors with the International Brotherhood of Electrical Workers (IBEW) to construct the project, while following all COVID-19 safety protocols during the global pandemic.

Value Add

Athos I & II

Design-build solar installations totaling 450MWac

Riverside County, CA
SB Energy US Holdings One, Inc.
27 Months
$750 Million

Project Facts






Million First Solar Series 6™ PV modules

November 18, 2021 | Articles

Palm Springs, Calif., Solar Farm Overcomes Permit, Pandemic Hurdles

When completed, the solar field will generate enough electricity to power more than 179,000 homes

ENR California

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