Ryan Guidry

A former executive of a California solar power company was sentenced Tuesday to 6 1/2 years in prison and ordered to pay nearly $620 million in restitution for his role in a $1 billion fraud scheme, federal prosecutors said. Ryan Guidry, 45, of Pleasant Hill pleaded guilty in 2020 to conspiracy and money laundering charges, the U.S. Attorney's Office said in a statement. Guidry was a one-time vice president of operations for DC Solar, based in Benicia in the San Francisco Bay Area. Between 2011 and 2018, the company marketed mobile solar generator units. The firm touted the trailer-mounted units as being able to provide emergency power for cellphone companies or lighting at sporting and other events. In reality, DC Solar sold more generators than it made, used phony financial statements and lease contracts to conceal the fraud and in a classic Ponzi scheme repaid early investors with money from later ones, prosecutors said. 9,000 of the approximately 17,000 generators that DC Solar claimed to have made didn't exist, according to the U.S. Attorney's Office. DC Solar founder Jeff Carpoff was sentenced in 2021 to 30 years in prison and ordered to pay $790.6 million in restitution for conspiracy to commit wire fraud and money laundering. In 2021 and 2022 four other people, including Carpoff's wife Paulette Carpoff, were sentenced to prison in connection with the fraud while Ronald J. Roach of Walnut Creek could face up to 10 years in prison when he is sentenced in March, prosecutors said.