Amazon, Google, Meta and Microsoft sign Duke Energy's data-center tariff; ratepayers keep the exit risk
The first US data-center tariff co-signed by Amazon, Google, Meta and Microsoft makes new 50MW-plus loads post cash upfront in North Carolina, while clean energy groups call the exit clause a 25%-of-remaining-bills escape hatch. The NC Utilities Commission rules by mid-November, right after Duke's November 5 earnings.
Vincent Jiang · 2 min read
Duke Energy has settled its long-running large-load tariff fight in North Carolina, and the four hyperscalers buying most of America's AI power signed it. Amazon−1.98% — Amazon, down 1.98 percent today, Google, Meta−0.26% — Meta, down 0.26 percent today and Microsoft−1.43% — Microsoft, down 1.43 percent today joined the NC Public Staff, the Department of Defense and industrial group CIGFUR on an agreement filed October 6 that makes any new large load of 50 megawatts or more pay a nonrefundable upfront fee for dedicated grid facilities, post deposits and security guarantees for shared upgrades, and take a mandatory High Load Factor rate schedule 16. If approved, it applies to electric service agreements signed after June 1, 2026; contracts signed on or before that date, possibly including Amazon's Rockingham data center, are exempt 13.
The money moves to the customer at signing
For Duke shareholders, the structure converts speculative data-center demand into collateralized revenue. Stranded-asset risk on the buildout shifts to the customer at signing, which underwrites the 5 to 7 percent annual adjusted EPS growth through 2030 that Duke reaffirmed alongside its November 5 third-quarter date 5. Duke's North Carolina president Kendal Bowman put it plainly: "data centers will pay upfront for all costs to connect to the grid" 1.
The escape hatch and the fuel-charge history
Environmental groups see it differently. The Southern Environmental Law Center calls the exit clause too lenient: a departing large customer pays only a small fraction of triggered upgrade costs, and SACE decarbonization director Eddy Moore describes it as a last-minute escape hatch allowing just 25 percent of remaining electricity costs for years 2. Shared transmission upgrades hit all customers first and are repaid over the contract, and no separate customer class exists to audit what these loads actually cost to serve 23.
The credibility backdrop matters. A North Carolina appellate panel ruled Duke's 2024 fuel riders unlawfully included 2022 under-recoveries, about $19.1 million disputed, yet customers will never see a refund because 2025's Senate Bill 266 removed the legal test-period limit 4. That history is the argument for reading the fine print rather than trusting the shield.
What decides it
The North Carolina Utilities Commission is expected to rule by mid-November 1, days after Duke's November 5 print. The order is the binary: approval as filed locks in the self-collateralizing revenue model; a stiffened version trims it.
Deepdive
AI-generated from this story and its cited sources. Not investment advice.
