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Case Citation
Legal Case Name

Northwest Pipeline Corp. v. Federal Energy Regulatory Commission Case Brief

Court of Appeals for the Tenth Circuit1995Docket #64021639
61 F.3d 1479 1995 U.S. App. LEXIS 20443

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Case Brief Summary & Legal Analysis

General Brief
4 min read

tl;dr: A pipeline company challenged a FERC order requiring it to refund customer overcharges. The court affirmed, holding that the agency’s action was a permissible exercise of its statutory authority to review new rate filings, not prohibited retroactive ratemaking.

Legal Significance: This case clarifies the distinction between an agency’s authority to review newly filed rates (NGA § 4) versus its power to modify existing rates (NGA § 5), affirming that refunds are permissible in the former context and do not constitute prohibited retroactive ratemaking.

Northwest Pipeline Corp. v. Federal Energy Regulatory Commission Law School Study Guide

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Case Facts & Court Holding

Key Facts & Case Background

Northwest Pipeline Corp. operated an interstate natural gas pipeline. Its tariff, Section 14.8, established a formula for a Fuel Reimbursement Percentage (FRP) charged to its “unbundled” transportation customers. The formula required dividing the “total annual fuel” by the “total annual volumes … transported through Transporter’s transmission system.” For years, Northwest calculated the FRP by dividing total fuel costs by only the volumes transported for unbundled customers, excluding volumes for its “bundled” customers. This methodology resulted in a higher charge for unbundled customers. In 1991, Northwest submitted its annual FRP adjustment using this same calculation. A customer, Northwest Natural, protested the filing. The Federal Energy Regulatory Commission (FERC) accepted the new rate but suspended it and made it “subject to refund” pending review, a procedure under § 4 of the Natural Gas Act (NGA). Upon review, FERC agreed with the protest, finding that Northwest’s calculation violated the plain language of its own tariff. FERC ordered Northwest to recalculate the FRP using the total transported volume (both bundled and unbundled) in the denominator and to refund the resulting overcharges to unbundled customers, retroactive to the filing’s effective date. Northwest appealed, arguing the order was impermissible retroactive ratemaking.

Court Holding & Legal Precedent

Issue: Did the Federal Energy Regulatory Commission engage in prohibited retroactive ratemaking by ordering a pipeline to refund overcharges that resulted from the pipeline’s misapplication of its own approved rate formula in an annual rate adjustment filing?

No. The court held that FERC’s refund order was a proper exercise Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Legal Issue

Did the Federal Energy Regulatory Commission engage in prohibited retroactive ratemaking by ordering a pipeline to refund overcharges that resulted from the pipeline’s misapplication of its own approved rate formula in an annual rate adjustment filing?

Conclusion

The decision reinforces a key principle of administrative ratemaking: an agency can Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in volup

Legal Rule

Under the Natural Gas Act (NGA), an agency's order to refund overcharges Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehen

Legal Analysis

The court's analysis centered on the distinction between the Federal Energy Regulatory Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostru

Flash-to-Full Case Opinions

Flash Summary

  • A FERC order requiring a pipeline to refund overcharges is not
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incidi

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