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Constellation and Amazon announced on 30 September 2026 a 20-year agreement covering 690 MW of power from the Calvert Cliffs plant in Maryland, including an uprate of approximately 190 MW expected online between 2030 and 2032, with a related retail supply agreement for Amazon operations in PJM. Copy claim link
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Supporting evidence: primary · 1 source
Date 2026-09-30 · announcement Figure measures contracted energy Stated dates (targets and terms, not events) target operation: 2030–2032, uprate Stage contracted Quantity exact · 690 megawatts of power, including a 190 MW uprate (as worded) Scope and limits Announced; the uprate is planned capacity. The release says Calvert Cliffs output continues to flow to the PJM grid; it does not name a data-centre site.
The evidence 03 primary source Supports the claim
Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs ↗ Constellation Energy · 2026-09-30
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Source excerpt “a 20-year agreement, which includes 690 megawatts of power, including the 190 megawatt uprate” Location in source paragraph beginning “The expansion of Calvert Cliffs' generating…”
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Constellation Energy Version Retrieved for the candidate pack on 2026-10-28 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c). Newsroom page as served on 2026-10-28; dateline LUSBY, MD – SEPT. 30, 2026. Retrieved again at admission on 2026-10-30 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c, the same bytes). Its wording can change; earlier wording is not authenticated. Canonical address Open the canonical source ↗ Accessed 2026-10-28 Language English (en) Attribution Constellation Energy, “Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs”, 2026-09-30. Reuse No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution. Check notes Candidate pack passage, compute, power and orbit (research/compute-power-orbit). The quotation (14 words) matched the text retrieved for the candidate pack on 2026-10-28 and again at admission on 2026-10-30, in a fresh retrieval whose SHA-256 equals the pack’s. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-29/30, item 31) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review. primary source Supports the claim
Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs ↗ Constellation Energy · 2026-09-30
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Source excerpt “approximately 190 megawatts in total of new, emissions-free generating capacity coming online between 2030 and 2032” Location in source paragraph beginning “LUSBY, MD – SEPT. 30, 2026…”
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Constellation Energy Version Retrieved for the candidate pack on 2026-10-28 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c). Newsroom page as served on 2026-10-28; dateline LUSBY, MD – SEPT. 30, 2026. Retrieved again at admission on 2026-10-30 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c, the same bytes). Its wording can change; earlier wording is not authenticated. Canonical address Open the canonical source ↗ Accessed 2026-10-28 Language English (en) Attribution Constellation Energy, “Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs”, 2026-09-30. Reuse No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution. Check notes Candidate pack passage, compute, power and orbit (research/compute-power-orbit). The quotation (16 words) matched the text retrieved for the candidate pack on 2026-10-28 and again at admission on 2026-10-30, in a fresh retrieval whose SHA-256 equals the pack’s. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-29/30, item 31) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review. primary source Supports the claim
Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs ↗ Constellation Energy · 2026-09-30
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Source excerpt “a related retail supply agreement to support Amazon operations in the 13-state PJM market” Location in source paragraph beginning “The expansion of Calvert Cliffs' generating…”
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Constellation Energy Version Retrieved for the candidate pack on 2026-10-28 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c). Newsroom page as served on 2026-10-28; dateline LUSBY, MD – SEPT. 30, 2026. Retrieved again at admission on 2026-10-30 (SHA-256 453c0719cb30ee292b400645e9b07c6d383a3b3e0f956c5120eccd6bcd74a18c, the same bytes). Its wording can change; earlier wording is not authenticated. Canonical address Open the canonical source ↗ Accessed 2026-10-28 Language English (en) Attribution Constellation Energy, “Constellation and Amazon Announce 20-Year Power Purchase Agreement Adding 190 Megawatts of Nuclear Capacity at Calvert Cliffs”, 2026-09-30. Reuse No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution. Check notes Candidate pack passage, compute, power and orbit (research/compute-power-orbit). The quotation (14 words) matched the text retrieved for the candidate pack on 2026-10-28 and again at admission on 2026-10-30, in a fresh retrieval whose SHA-256 equals the pack’s. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-29/30, item 31) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review. Status and meaning Editorial status. Not reviewed by an editor . An exploratory record that no editor has accepted. This status does not say whether a person has read any linked passage. Each evidence record above shows how it was checked.
Relation. A stated agreement on electricity supply, a power purchase, a plant restart or the development of generation, at the stage the parties state. It is not delivery of power, and an agreement to explore is not a contract.
Date. Date of the announcement, as the source gives it.
Record ID cpo-pw-amazon-constellation-calvert