Amazon Bought 20 Years of Nuclear Power the Day PJM's Backstop Auction Failed to Open
Constellation hit a two-month low on FERC's freeze of PJM's 6,831 MW backstop, then announced a 20-year, 690 MW Amazon contract that funds a $3 billion expansion of Maryland's only nuclear plant. The bilateral market is answering a capacity market that just stalled.
Vincent Jiang · 3 min read
The selloff reversed at 4 p.m.
Constellation fell about 4% on 30 September to its lowest level in more than two months, after the Federal Energy Regulatory Commission suspended PJM's one-time procurement for a 6,831 MW capacity shortfall until 28 February 2027 1. At 4 p.m. the company announced a 20-year agreement with Amazon covering 690 MW at Calvert Cliffs, Maryland's only nuclear plant, including a 190 MW uprate and more than $3 billion of investment across the 1,790 MW site 2. The stock rose as much as 5% after hours 3.
The frozen auction was a fight over who pays
The backstop window was to open that same day and run to 21 October, offering contracts of up to 15 years for new generation 4. FERC accepted the core design but suspended it five months over how costs are divided. Chairman Laura Swett warned "the region's reliability hangs in the balance"; Commissioner Lindsay See wrote that "existing customers should not be left paying costs attributable to new demand" 5. PJM's previous auction had already cleared at its $325 per megawatt-day cap, paying generators $16.4 billion 6.
Amazon's first Calvert Cliffs plan died at the ballot box
Amazon once wanted to build on the plant itself: a 2.4 million square foot data center campus, withdrawn in August after Calvert County voters ousted three commissioners in a June primary dominated by data center anger 7. The new contract needs no campus. All of Calvert Cliffs' output keeps flowing to the PJM grid 2, and PJM's own filing says bilateral contracts shrink the backstop target 4.
The pattern is nine days old
Google agreed on 21 September to back roughly 96 MW of uprates at the Vogtle and Hatch plants in Georgia, under a new tariff filed with state regulators 8. Amazon's deal is the second such underwriting, and it sits inside PJM, the market whose collective procurement just stalled.
Contracted floors, frozen auctions
The stock split marks the divide: Constellation is down 31% this year, NRG Energy 42%, Talen about 21% 1. Constellation now holds a 20-year contracted revenue floor at Calvert Cliffs, plus a path to relicense the plant for 20 more years 2. NRG and Talen hold what TD Cowen calls "acute" uncertainty 1.
Three merchant power stocks are down 21% to 42% this year, with NRG hit hardest
Data
| Value | |
|---|---|
| NRG Energy | -42% |
| Constellation | -31% |
| Talen | -21% |
The contract's price was not disclosed, and its new megawatts arrive between 2030 and 2032, after the delivery year the frozen backstop was meant to cover 2. The bilateral route is real; it is also slow and small.
Amazon's bilateral answer is a tenth the size of PJM's frozen gap
Data
| Value | |
|---|---|
| PJM backstop gap | 6,831 MW |
| Calvert Cliffs today | 1,790 MW |
| Amazon 20-yr contract | 690 MW |
| New uprate | 190 MW |
A revised filing is due by 28 February
PJM says it is incorporating FERC's directives 5. Watch the refiled backstop terms and the Calvert Cliffs relicensing docket. FERC can suspend a procurement; it cannot suspend a contract.
Deepdive
AI-generated from this story and its cited sources. Not investment advice.
