Montana-Dakota Utilities Co. v. Northwestern Public Service Co.

Petitioner and respondent are public electric utilities companies engaged in interstate commerce. Petitioner’s predecessor and respondent were under the same management through interlocking directorships and joint of*248ficers. During that relationship the two interchanged electric energy, shared expenses, and made a number of intercompany contracts establishing rates and charges, which contracts were filed with and accepted by the Federal Power Commission. These contract rates and charges are at the root of this controversy. Petitioner charges that, during the period 1935-1945, its predecessor…