Cal Fire responded to a grass fire that burned underneath solar panels at the Topaz Solar Farm on Wednesday afternoon.
Officials say about three acres had burned by 3:30 p.m., but no injuries were reported.
At about 2:30 p.m., the agency received a call from residents about four miles away from the solar station in the Carissa Plains of visible smoke.
Four Cal Fire engines, air support and a water tanker responded to the remote plant, and the fire was extinguished at approximately 3:39 p.m.
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A Cal Fire spokeswoman said the agency also received a report from someone at the plant who said the fire began underneath a solar panel, suggesting it was sparked as a result of an electrical issue.
The agency said that the solar panels themselves did not burn, but the extent of damage was not immediately known.
The incident remained under investigation Wednesday afternoon.