A fire started around 7:15 pm on Wednesday at Abengoa's Solana Concentrated Solar Power (CSP) plant in Gila Bend, about 100 km southwest of Phoenix, Arizona.
According to some reports this is the second fire in the plant in the last three months, reportedly due to failures in the molten salt energy storage system.
Spanish medias claims the company did not report about the fire occurred on November despite leading to a visit on site by Abengoa's Chairman Felipe Benjumea and CEO Manuel Sánchez. The company has reportedly described the fire as of little significance.
Local media abc15 has reported no injuries while Buckeye firefighters and hazmat crews assisted with the blaze.
Solana is Abengoa's flagship plant in the US with 280 MW (gross) output and molten salt energy storage system for six hours at full rate without sun's radiation. It is expected to generate almost 1 TWh every year.
According to data by US' Energy Information Administration, the plant has generated roughly 597,000 MWh in the past 12 months, still a bit above half the expected generation.
The plant, commissioned in mid 2013, received a $1450 million loan guarantee from US' Departement of Energy.