Walmart Challenges Proposed Duke Energy High-Load Tariff
Large power users should prepare for potential changes to billing calculations as regulators weigh a new rate settlement.
Updated on Oct. 24, 2026 in Utilities
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Walmart has asked the North Carolina Utilities Commission to open a new comment period regarding a proposed Duke Energy rate agreement. The request follows Walmart's assertion that it was excluded from negotiations on a new tariff for heavy-load customers.
Why it matters
The proposed rules would establish a new high-load-factor tariff for businesses with energy demand of 150 megawatts or more, potentially reshaping operating costs for major industrial and tech facilities in North Carolina.
The proposed Duke Energy settlement establishes a specific tariff structure for customers with demand of 150 megawatts or more. The agreement, which relies on a rolling 12-month load factor calculation, remains under regulatory review.
The players
Duke Energy
A major electric utility provider that serves millions of customers across several states including North Carolina.
Walmart
A global retail operator with significant infrastructure and electricity demands.
North Carolina Utilities Commission
The state regulatory agency responsible for overseeing utility rates and industry compliance.
The details
The settlement agreement introduces a high-load-factor tariff mechanism that calculates customer demand based on a rolling 12-month average. By formalizing this rule, Duke Energy aims to align utility pricing for large-scale consumers. Walmart contends the current process lacked sufficient transparency, arguing that excluded stakeholders did not receive an adequate opportunity to challenge these new operational requirements.
Timeline
October 6, 2026: Duke Energy submitted the settlement agreement to regulators.
October 12, 2026: Walmart filed a request for additional comments.
October 30, 2026: Walmart's proposed deadline for the submission of supplemental comments.
Market Landscape
This dispute highlights the friction within the North Carolina Utilities Commission regulatory settlement process as major consumers seek greater parity. It follows a pattern of industrial customers challenging utility rule changes that were negotiated among a limited set of participants.
Large-scale operators in North Carolina should evaluate how a 12-month rolling load factor calculation affects their monthly utility billing volatility. Consult with your energy procurement team to assess if your current demand profile would trigger the proposed high-load-factor tariff.
The takeaway
The dispute signals a tightening of the approval process for major utility tariff changes in North Carolina. Operators should track the commission's response to this filing as a leading indicator of whether past settlement practices will remain the standard for future infrastructure cost-sharing.
What happens next
The North Carolina Utilities Commission will determine whether to grant the extension, with Walmart proposing a deadline for supplemental comments of October 30, 2026.
Further reading
For more on how rate cases affect commercial power costs, read our Utilities coverage.
Source note: This article includes information reported by The North State Journal.
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