---
title: "Duke Energy's data-center tariff makes Amazon and Microsoft pay for wires, not the power plants"
description: "North Carolina's first large-load tariff, now before state regulators, drops the clean-energy mechanism Duke Energy promised the same customers in 2024. The five-member Utilities Commission rules by mid-November, ten days after Duke's earnings, on whether data centers pay for the plants their demand forces."
publisher: "The Inference"
section: "Power"
published: 2026-10-15T18:26:39.086Z
modified: 2026-10-15T18:26:39.086Z
canonical: https://theinference.org/article/duke-energy-s-data-center-tariff-makes-amazon-and-microsoft-pay-for-wires-not-the-power-plants
language: en
keywords: "Duke Energy, Data Centers, Utilities, North Carolina, Tariffs, Electricity"
---

# Duke Energy's data-center tariff makes Amazon and Microsoft pay for wires, not the power plants

> North Carolina's first large-load tariff, now before state regulators, drops the clean-energy mechanism Duke Energy promised the same customers in 2024. The five-member Utilities Commission rules by mid-November, ten days after Duke's earnings, on whether data centers pay for the plants their demand forces.

[Duke Energy](https://theinference.org/markets/companies/duke-energy), the Charlotte utility, filed the final version of North Carolina's first large-load tariff this week [1]. The clean transition tariff it promised [Amazon](https://theinference.org/markets/companies/amazon), Google, [Microsoft](https://theinference.org/markets/companies/microsoft) and [Nucor](https://theinference.org/markets/companies/nucor), a steelmaker, in a 2024 memorandum of understanding is not in it: Duke [told state regulators that no party has presented enough detail to design one](https://gridandgeneration.com/news/duke-energys-clean-transition-tariff-proposal-fails/) [1]. Nick Jimenez, a senior attorney at the Southern Environmental Law Center, calls that 2024 memorandum essentially dead [1].

Backing the finished product are Amazon, [Google](https://theinference.org/markets/companies/alphabet), Microsoft, Andale (a [Meta](https://theinference.org/markets/companies/meta) affiliate), the Department of Defense and North Carolina's Public Staff, the state's consumer advocate, which signed the settlement on October 7 [2][3][7].

## What data centers now owe

The tariff captures customers signing from June 1, 2026, onward that use 50 megawatts at 80% or more of full power, or 150 MW at any level [2]. They pay cash within 60 days for equipment built only for them, owe at least 75% of their contracted power every month, sign contracts of 10 to 15 years, and face early-exit penalties running from $25 million to more than $587 million [2][3].

The Federal Energy Regulatory Commission, which governs transmission, [accepted parallel terms from Duke Energy Carolinas on October 9](https://www.utilitydive.com/news/ferc-duke-energy-large-load-tariff-nitsa/832847/) on a 4-1 vote: at least 75% of planned load for 15 years [4]. Commissioner Lindsay See [concurred that 75% sits "near the low end"](https://ferc.gov/news-events/news/commissioner-sees-concurrence-duke-energy-carolinas-llc-docket-nos-er26-2691-000) of just and reasonable, with no security posted against a customer going bankrupt [5].

## The new plants stay on the household bill

Duke projects that more than 80% of the new demand it must serve comes from data centers and other large users, and the tariff does not require those customers to pay for the new generation their load forces [2]. Attorney General Jeff Jackson, who pushed for the tariff for months [2], [still calls it a "massive step forward"](https://www.wunc.org/2026-10-14/nc-attorney-general-jackson-calls-duke-energys-data-center-tariff-massive-step-forward) [6]. [His filing lists the gaps](https://ncdoj.gov/attorney-general-jeff-jackson-governor-stein-respond-to-duke-energys-proposal-for-ncs-first-large-load-tariff/): no separate rate class, no option to build or bring clean power [2]. The tariff makes data centers cover the wires built for them; the new plants their demand forces stay in the rates everyone pays.

## Duke's spending is why the fine print matters

The tariff guards [a $103 billion capital program](https://theinference.org/article/duke-energy-says-dropping-carbon-limits-saves-10-billion-but-the-number-appears-in-no-regulatory-filing) sized around 7.8 gigawatts of signed deals with Amazon, Google, Meta and Microsoft [7]. Duke's quarterly grid spending has now overtaken the cash its operations bring in, so who funds that gap is the whole question [8].

*Chart: **Duke's quarterly grid spend has overtaken its operating cash flow** Line chart of Duke Energy quarterly capital expenditure versus operating cash flow, Q3 2023 to Q2 2026, with capex rising above cash flow*

*Quarterly capital expenditure and cash from operations, US$ billions, from Duke Energy's SEC filings, Q3 2023 through Q2 2026. [8]*

## Duke's side, and the clock

"Data centers will pay upfront for all costs to connect to the grid," said Kendal Bowman, Duke's North Carolina president [3]. See agreed the terms beat a status quo that left other customers wholly exposed, while Commissioner Judy Chang dissented that the protections fall short [5][4]. The five-member North Carolina Utilities Commission rules by mid-November [3][7], ten days after Duke [posts third-quarter results on November 5](https://finance.yahoo.com/markets/stocks/articles/duke-energy-announce-third-quarter-140000494.html) [9]. What to watch in its order: whether a separate rate class or a clean-power option appears, or the deal is signed as written.

## Takeaway

North Carolina's first large-load tariff shifts the cost of wires onto Amazon, Microsoft and Google, but the new power plants their demand forces stay in the rates everyone pays; the Utilities Commission rules by mid-November.

## Sources

1. [Grid & Generation, "Duke Energy's Clean Transition Tariff Proposal Fails to Materialize," October 2026](https://gridandgeneration.com/news/duke-energys-clean-transition-tariff-proposal-fails/)
2. [North Carolina Department of Justice, "Attorney General Jeff Jackson, Governor Stein Respond to Duke Energy's Proposal for NC's First Large Load Tariff," October 14, 2026](https://ncdoj.gov/attorney-general-jeff-jackson-governor-stein-respond-to-duke-energys-proposal-for-ncs-first-large-load-tariff/)
3. [The (Raleigh) News & Observer via MSN, "Duke Energy, data center giants agree on new rules for large power users in NC," October 7, 2026](https://www.msn.com/en-us/money/general/duke-energy-data-center-giants-agree-on-new-rules-for-large-power-users-in-nc/ar-AA2dLpZA)
4. [Utility Dive, "FERC approves Duke large load transmission rules despite cost-shift concerns," October 13, 2026](https://www.utilitydive.com/news/ferc-duke-energy-large-load-tariff-nitsa/832847/)
5. [Federal Energy Regulatory Commission, "Commissioner See's Concurrence in Duke Energy Carolinas, LLC, Docket Nos. ER26-2691-000," October 2026](https://ferc.gov/news-events/news/commissioner-sees-concurrence-duke-energy-carolinas-llc-docket-nos-er26-2691-000)
6. [WUNC/WFAE, "NC Attorney General Jackson calls Duke Energy's data center tariff 'massive step forward'," October 14, 2026](https://www.wunc.org/2026-10-14/nc-attorney-general-jackson-calls-duke-energys-data-center-tariff-massive-step-forward)
7. [The Inference, "Duke Energy says dropping carbon limits saves $10 billion, but the number appears in no regulatory filing," October 9, 2026](https://theinference.org/article/duke-energy-says-dropping-carbon-limits-saves-10-billion-but-the-number-appears-in-no-regulatory-filing)
8. [Duke Energy quarterly figures from its SEC filings, retrieved October 15, 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001326160)
9. [Duke Energy via PR Newswire/Yahoo Finance, "Duke Energy to announce third-quarter 2026 financial results on Nov. 5," October 6, 2026](https://finance.yahoo.com/markets/stocks/articles/duke-energy-announce-third-quarter-140000494.html)


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Duke Energy's data-center tariff makes Amazon and Microsoft pay for wires, not the power plants — The Inference. Canonical: https://theinference.org/article/duke-energy-s-data-center-tariff-makes-amazon-and-microsoft-pay-for-wires-not-the-power-plants