Prices for coal, one of MIR's main inputs in the production of electricity, rose from $117.60 per ton to $140 per ton from June 20th to August 15th.
Mirant reported a Q2 loss of -$783 million on Friday, August 8th. Mirant cited the loss to higher energy prices, which decreased the value of Mirant's forward contracts and increased Mirant's operating expenses.