Pennwalt Corp. v. Public Service Commission

The Detroit Edison Company appeals from an October 30, 1985, order of the Ingham Circuit Court, reversing a 1976 rate-making determination by the Michigan Public Service Commission involving Pennwalt Corporation. The circuit court found that Pennwalt was entitled to a refund because the commission had used an improper methodology to compute Pennwalt’s steam and electrical service rates. The court remanded the case to the commission with the instruction that the commission compute the 1976 rates utilizing the proper methodology, calculate the amount overcharged, and effect the refund. From…