United Gas Pipe Line Co. v. Mobile Gas Service Corp.
Headline: Natural gas suppliers cannot unilaterally raise long-term contract rates by filing new schedules, blocking the rate increase and requiring refunds to the distributor who paid the higher amounts.
Holding:
- Prevents suppliers from unilaterally raising contracted gas rates by filing new schedules.
- Protects distributors and industrial buyers relying on long-term gas contracts.
- Allows the Commission to investigate and order refunds for unlawful rate increases.
Summary
Background
Mobile Gas Service, a local distributor in Mobile, Alabama, bought gas from United Gas Pipe Line, a regulated supplier. An industrial customer, Ideal Cement, had a ten‑year purchase deal with Mobile at 12 cents per MCF. Mobile in turn had a ten‑year resale contract with United at 10.7 cents per MCF, and that contract was filed with the Federal Power Commission. In June 1953 United filed a new schedule to raise the resale rate to 14.5 cents; the new rate purportedly went into effect July 25, 1953. Mobile challenged the filing, paid the higher rate while the dispute continued, and paid higher amounts until April 15, 1955, when United accepted assignment of Mobile’s contract with Ideal, which affected the pending Commission investigation.
Reasoning
The Court asked whether the Natural Gas Act lets a supplier change a filed contract rate simply by filing a new schedule. It concluded it does not. The Act requires companies to file rates and contracts so the Commission can review them, but filing and notice under §4(d) do not themselves empower a supplier to rewrite a private contract. The Commission’s powers under §4(e) and §5(a) allow it to suspend, investigate, modify unlawful rates, and order refunds after hearing, but those review powers do not convert a supplier’s unilateral filing into a lawful contract change.
Real world impact
The ruling protects distributors and industrial buyers who rely on long-term gas contracts from sudden, unilateral price hikes by suppliers. It preserves contractual stability necessary for investments tied to supply arrangements, while leaving the Commission able to police rates and require refunds; in this case about $240,000 in excess payments were unlawful and must be returned.
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