Fourth person pleads guilty in massive $1b solar Ponzi scheme in California

An executive of a San Francisco Bay Area solar energy company pleaded guilty to what federal prosecutors said was a massive Ponzi scheme that defrauded investors of $1 billion.

Ryan Guidry, 43, of Pleasant Hill entered pleas involving the scam and money laundering. He could face up to 15 years in federal prison.

Guidry was vice president of operations for DC Solar, based in Benicia, northeast of San Francisco. The now-defunct company made solar generators mounted on trailers to provide emergency power for cellphone companies.

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