The company eventually stopped building the mobile generators altogether, and prosecutors say at least half the company’s claimed 17,000 generators did not really exist.
Among those suckered by the business were Mr Buffett’s Berkshire Hathaway.
DC Solar founder Jeff Carpoff was sentenced last November to 30 years in prison and ordered to pay $US790.6 million in restitution for conspiracy to commit wire fraud and money laundering.
His wife, Paulette Carpoff, 47, has pleaded guilty to federal charges and will be sentenced in May.
Prosecutors said the Carpoffs used the money to buy and invest in 32 properties, more than 150 luxury cars, a subscription to a private jet service, a semipro baseball team, a NASCAR racecar sponsorship and a suite at the new Las Vegas Raiders stadium.
One other man was sentenced to three years in prison last year and three others pleaded guilty to criminal charges and await sentencing.
AP
