Florida Regulators Reject Duke Energy Large-Load Tariff
The Florida Public Service Commission voted to deny Duke Energy Florida's proposed rate terms for customers with large electricity demands.
Updated on Nov. 5, 2026 in Utilities
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The Florida Public Service Commission voted on November 3, 2026 to deny Duke Energy Florida's proposed large-load tariff. The commission found the proposal excluded some customers covered by Florida's 2026 law and that Duke supplied insufficient evidence its rates would recover each qualifying customer's full cost of service.
Why it matters
Florida's Senate Bill 484 defines a large-load customer by an anticipated monthly peak of at least 50 megawatts at one location, and the ruling requires utilities to account for generation and transmission costs attributable to such customers. The decision shapes how costs for large electricity users are allocated across Florida ratepayers in Duke Energy Florida's territory.
Duke's filing applied the statutory 50 MW large-load threshold to firm demand only, while its April petition proposed a 20-year minimum service term and advance payment of estimated costs. It remains unresolved what revised rate schedule and cost-coverage evidence Duke will submit.
The players
Florida Public Service Commission
The state regulatory body that oversees investor-owned utility rates and tariffs in Florida, and which voted to deny the proposal.
Duke Energy Florida
The investor-owned utility serving much of Florida that filed the large-load tariff petition in April 2026.
The details
Commission staff explained in an October 22 recommendation that the restriction could exclude a customer meeting the statutory threshold through interruptible service. Duke argued its proposed terms would protect other customers from the risk of facilities built for large loads going underused, while qualifying customers would have taken service under existing rate schedules.
Timeline
April 2026: Duke Energy Florida filed its petition proposing large-load tariff terms.
October 22, 2026: Commission staff issued a recommendation on the interruptible-load exclusion.
November 3, 2026: The commission voted to deny Duke's large-load tariff.
December 22, 2026: The docket's eight-month effective date is listed on the commission agenda.
Market Landscape
The ruling places Florida's 2026 large-load statute at the center of how state regulators handle utility tariffs for energy-intensive customers. Comparable approaches elsewhere include Virginia's separate large-load rate class with minimum demand charges and collateral requirements, and Georgia's fuel-cost inquiry into real-time pricing.
Large-load customers in Duke Energy Florida's service area will continue under existing rate schedules until a revised tariff is approved. Ratepayers should watch the refiled proposal for how costs attributable to large electricity users are allocated.
The takeaway
The commission's ruling makes clear that large-load tariffs must show, with evidence, that each qualifying customer's full cost of service is covered. That standard will shape how utilities justify the rates they charge the biggest electricity users.
What happens next
Duke Energy Florida must submit a proposed large-load rate schedule and evidence of cost coverage, and staff recommended allowing refiling within 10 business days after the written order, with the docket's eight-month effective date listed as December 22.
Further reading
Explore more on Utilities coverage across Florida.
Source note: This article includes information reported by Environment+Energy Leader.
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