SAN FRANCISCO (BLOOMBERG) – The co-owner of a California-based solar company was sentenced to 30 years in prison for running a US$1 billion (S$1.35 billion) Ponzi scheme that attracted big-name investors, among them Warren Buffett’s Berkshire Hathaway.

Jeff Carpoff’s DC Solar built mobile solar generators for sporting events and music festivals. It burnished its image with investors by wildly inflating the number of generators it had produced.

Money poured in through complex deals known as tax-equity funds. Mr Buffett’s company invested US$340 million. Other backers included Progressive Corp, East West Bancorp, Valley National Bancorp and Sherwin-Williams Co.

But DC Solar manufactured and leased only a fraction of the roughly 17,000 mobile units it claimed were in use, authorities said. Instead, the firm used money from new investors to pay off old ones, according to a statement from the US Attorney’s Office in Sacramento.

“Jeff Carpoff orchestrated the largest criminal fraud scheme in the history of the Eastern District of California,” Acting US Attorney Phillip Talbert said in the statement.

Carpoff, 50, pleaded guilty last year to conspiracy to commit wire fraud and money laundering, according to court records. At the same time, his wife, Paulette Carpoff, admitted to money laundering and conspiracy. She is scheduled to be sentenced next week.

Five others with ties to the company also have pleaded guilty in connection to the case.

“Mr Carpoff sincerely regrets his…

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