Prosecutors said the collapse of Project Alpha cost shareholders about $100 million. Alpha became known a year later when Dynegy and other energy merchants were pummeled by heightened regulatory scrutiny and skittish investors in the aftermath of Enron Corp.'s collapse. Olis, a midlevel Dynegy executive, originally was sentenced to 24 years, but a panel of the 5th U.S. Circuit Court of Appeals deemed that unreasonable and reduced his sentence to six years. He is scheduled for release in August 2009.