Among the documents released by FERC was an Enron memo that discussed a strategy of sending "excess generation" into the energy system, creating congestion, and then being paid by the California Independent System Operator to ease the congestion by transmitting energy in the opposite direction.
As wary mail carriers in the Midwest returned to their routes Monday, an FBI official told NBC News that investigators are operating on the theory that one person is responsible for planting 15 pipe bombs in residential mailboxes.
http://money.cnn.com/2002/05/07/news/enron_feinstein/index.htm