Failure of Solar Energy System at Mount Diablo School District Raises Concerns
Mount Diablo Unified School District faces significant operational challenges with 60% of its $75 million solar system non-functional, leading to potential financial losses estimated at $2 million annually. The situation highlights the need for urgent maintenance and accountability following the bankruptcy of SunPower Corporation.

Mount Diablo Unified School District's solar energy system, initially installed in 2010, is currently experiencing a failure rate of 60%, with 43 out of 77 inverters offline. This has resulted in a loss of nearly 8 megawatts of promised energy output, translating to significant financial implications.
The district, which claims one of the largest solar systems among K-12 institutions, has incurred approximately $2 million in additional energy costs annually due to this failure. SunPower Corporation, previously contracted for installation and maintenance, filed for Chapter 11 bankruptcy in August 2024, complicating maintenance responsibilities.
Schneider Electric had previously warned the district of potential issues, indicating a long-standing awareness of system inadequacies. The urgency for resolution is underscored by the district's plans to consult with Capital Engineering to evaluate losses and devise a recovery strategy.




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