Natrium — Kemmerer Tổ máy 1 — đang xây dựng

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TerraPower

Bắt đầu 23/04/2026

Naughton Coal Plant, Kemmerer, Lincoln County, Wyoming, 83116, United States

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Đã chỉnh sửa12/10/2026 lúc 22:49bởi @ThePinGang
Tóm tắt
viết lại
Trước
Published cost and electrical output
Project cost / investmentAbout USD 4 billionCost scopePublished demonstration-project total cost; historical 2024 estimate, separate from federal fundingCost source date2024Electrical generating capacity345 MW — 345 MWe net continuous reactor output; storage-assisted peak excludedVerified project stageUnder construction
Project-specific research
IAEA’s 2024 Climate Change and Nuclear Power report identifies US$4 billion expected total cost for the Natrium demonstration project, separately from the US$2 billion DOE contribution. It describes one 345 MWe net reactor at Kemmerer. This is a dated published project estimate; it is not represented as a refreshed 2026 fixed-price budget.
IAEA’s 2024 Climate Change and Nuclear Power report identifies US$4 billion expected total cost for the Natrium demonstration project, separately from the US$2 billion DOE contribution. It describes one 345 MWe net reactor at Kemmerer. This is a dated published project estimate; it is not represented as a refreshed 2026 fixed-price budget. Natrium — Kemmerer Unit 1: 345 MW generating project rating. 345 MWe net continuous reactor output; storage-assisted peak excluded
TerraPower April 23, 2026 confirms official plant construction following the construction permit. Non-nuclear site support construction started June 2024. Reactor output is 345 MWe; storage-assisted 500 MW peak output is not additional continuous generating capacity.
Scope and evidence
Retained only with documented physical construction, commissioning or 2025–2026 opening and published project-specific costs and electrical output. Costs use the published scope and currency; no benchmark estimates or currency conversions. MW is power capacity, not annual electricity production. Expected annual energy, where given, is a forecast. The map point is a reported plant/project location and may be approximate. Matching inventory views and excluded expansion proposals are not additive capacity.
Đã chỉnh sửa12/10/2026 lúc 3:45bởi @ThePinGang
Tiêu đề
TerraPower Starts Nuclear Construction of Its Natrium Plant in KemmererNatrium — Kemmerer Unit 1 — under construction
Đoạn mở đầu
viết lại
Trước
TerraPower began full construction of Kemmerer Unit 1, a 345 MW sodium-cooled fast reactor with molten-salt storage in Wyoming, on 23 April 2026, seven weeks after the NRC voted to grant its construction permit; the roughly $4 billion plant is due to be complete in 2030.
Kết thúc
31 thg 12, 203023 thg 4, 2026
Tóm tắt
viết lại
Trước
Operator and regulator research, October 11, 2026
TerraPower announced the start of construction on Kemmerer Unit 1 on April 23, 2026 after receiving the NRC construction permit. Natrium’s reactor rating is 345 MW; the storage-assisted peak output is a different metric and must not be represented as the continuous reactor capacity.
Operator project page identifies Kemmerer as under construction. EPC contracting changes and schedule implications need a later sourced revisit.
Earlier pin evidence / inventory snapshot
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
Additional August 2026 inventory evidence
GEM August 2026 snapshot: under construction. 345 MW sum of published phase ratings (ratings may mix solar DC/AC). Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Additional August 2026 inventory evidence
EIA August 2026 snapshot: approvals pending. 500 MW nameplate across 1 new/recent generating units. Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Inventory unit details — gem-L100000500364
Additional source view; compare phase coverage and rating conventions before combining figures.
1 (G100000501003): reported rating 345 MW; liquid-metal-cooled fast reactor; status construction; reported year 2031; solar rating not specified/not applicable.
Inventory unit details — eia-68635
Additional source view; compare phase coverage and rating conventions before combining figures.
KU1 (KU1): reported rating 500 MW; Nuclear; status (L) Regulatory approvals pending. Not under construction; reported year 2030; solar rating not specified/not applicable.
- Published project evidencewww-pub.iaea.orgĐỘ TIN CẬY 95%
Đã chỉnh sửa12/10/2026 lúc 0:04bởi @ThePinGang
Tóm tắt
viết lại
Trước
Operator and regulator research, October 11, 2026
TerraPower announced the start of construction on Kemmerer Unit 1 on April 23, 2026 after receiving the NRC construction permit. Natrium’s reactor rating is 345 MW; the storage-assisted peak output is a different metric and must not be represented as the continuous reactor capacity.
Operator project page identifies Kemmerer as under construction. EPC contracting changes and schedule implications need a later sourced revisit.
Earlier pin evidence / inventory snapshot
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
Additional August 2026 inventory evidence
GEM August 2026 snapshot: under construction. 345 MW sum of published phase ratings (ratings may mix solar DC/AC). Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Additional August 2026 inventory evidence
EIA August 2026 snapshot: approvals pending. 500 MW nameplate across 1 new/recent generating units. Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Inventory unit details — gem-L100000500364
Additional source view; compare phase coverage and rating conventions before combining figures.
1 (G100000501003): reported rating 345 MW; liquid-metal-cooled fast reactor; status construction; reported year 2031; solar rating not specified/not applicable.

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Đã chỉnh sửa12/10/2026 lúc 0:03bởi @ThePinGang
Tóm tắt
viết lại
Trước
Operator and regulator research, October 11, 2026
TerraPower announced the start of construction on Kemmerer Unit 1 on April 23, 2026 after receiving the NRC construction permit. Natrium’s reactor rating is 345 MW; the storage-assisted peak output is a different metric and must not be represented as the continuous reactor capacity.
Operator project page identifies Kemmerer as under construction. EPC contracting changes and schedule implications need a later sourced revisit.
Earlier pin evidence / inventory snapshot
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
Additional August 2026 inventory evidence
GEM August 2026 snapshot: under construction. 345 MW sum of published phase ratings (ratings may mix solar DC/AC). Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Additional August 2026 inventory evidence
EIA August 2026 snapshot: approvals pending. 500 MW nameplate across 1 new/recent generating units. Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Đã chỉnh sửa11/10/2026 lúc 22:58bởi @ThePinGang
Tóm tắt
viết lại
Trước
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
Additional August 2026 inventory evidence
GEM August 2026 snapshot: under construction. 345 MW sum of published phase ratings (ratings may mix solar DC/AC). Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
Additional August 2026 inventory evidence
EIA August 2026 snapshot: approvals pending. 500 MW nameplate across 1 new/recent generating units. Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
- Operator/regulator evidence: TerraPower announced the start of construction on Kemmerer Unit 1 on April 23, 2026 after receiving the NRC constructionterrapower.comĐỘ TIN CẬY 95%
- Operator/regulator evidence: Operator project page identifies Kemmerer as under construction. EPC contracting changes and schedule implications need terrapower.comĐỘ TIN CẬY 95%
Đã chỉnh sửa11/10/2026 lúc 22:52bởi @ThePinGang
Tóm tắt
viết lại
Trước
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
Additional August 2026 inventory evidence
GEM August 2026 snapshot: under construction. 345 MW sum of published phase ratings (ratings may mix solar DC/AC). Technologies: Nuclear.
Compare phase coverage and AC/DC, nameplate and net ratings before combining source figures. This inventory view is not extra capacity to add to the existing project total.
- August 2026 generation inventory recordeia.govĐỘ TIN CẬY 95%
Đã chỉnh sửa11/10/2026 lúc 22:52bởi @ThePinGang
Tóm tắt
viết lại
Trước
TerraPower announced on 23 April 2026 the official start of construction of Kemmerer Unit 1, expected to be the first utility-scale advanced nuclear power plant in the United States, following the NRC construction permit
NRC commissioners voted on 4 March 2026 to grant the permit, the first for a commercial-scale advanced reactor; TerraPower says the review took 18 months, from an application it submitted in March 2024
The 345 MW sodium-cooled fast reactor is paired with a molten-salt storage system that can lift output to 500 MW for more than five hours, and the plant is developed through the Department of Energy's Advanced Reactor Demonstration Program
The milestone moves the estimated $4 billion project from early-site and non-nuclear work, which began with a June 2024 groundbreaking, into full plant construction, with about 1,600 workers being mobilised and about 250 full-time staff once operating
TerraPower expects the project to be completed in 2030; the site is near a retiring coal facility in Kemmerer, Wyoming
- August 2026 generation inventory recordraw.githubusercontent.comĐỘ TIN CẬY 95%

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Tài liệu tham khảo 2ĐỘ TIN CẬY 95%Độ tin cậy tổng thể: 95%Mức độ nguồn và tài liệu tham khảo của ghim củng cố các ngày của nó.Trung bình có trọng số về mức độ 2 tài liệu, gồm cả nguồn, ủng hộ thời điểm bắt đầu và kết thúc của ghim; một tài liệu được tính giảm một nửa cho mỗi 180 ngày cũ hơn tài liệu mới nhấtHiện tất cả ghim có độ tin cậy từ 75% trở lên

Mục đầu tiên luôn là nguồn của ghim. Độ tin cậy tổng thể là trung bình có trọng số về mức độ mỗi tài liệu ủng hộ thời điểm bắt đầu và kết thúc được dùng ở trên; một tài liệu được tính giảm một nửa cho mỗi 180 ngày cũ hơn tài liệu mới nhất.

[1]95%
Plant inventory or original project record
terrapower.com· Đăng 12 thg 10, 2026· Bắt đầu 23 thg 4, 2026 ✓· 50% điểm số
Cột mốc vật lý có tài liệu hoặc mốc tiến độ/báo cáo có ngày tháng. Ngày cuối kỳ chỉ đại diện cho tháng/quý được báo cáo; không tự đặt ra ngày vận hành chính xác. Các ước tính từ nguồn được gắn nhãn và không được coi là ngày khai trương tương lai đã xác nhận.
[2]95%
Published project evidence
www-pub.iaea.org· Thêm 12 thg 10, 2026· Thêm bởi@ThePinGang· 50% điểm số
IAEA’s 2024 Climate Change and Nuclear Power report identifies US$4 billion expected total cost for the Natrium demonstration project, separately from the US$2 billion DOE contribution. It describes one 345 MWe net reactor at Kemmerer. This is a dated published project estimate; it is not represented as a refreshed 2026 fixed-price budget. Natrium — Kemmerer Unit 1: 345 MW generating project rating. 345 MWe net continuous reactor output; storage-assisted peak excluded

Đề xuất chỉnh sửa

Thiếu hay sai điều gì? Hãy nói bằng lời của bạn: một liên kết củng cố ghim này, một ngày bắt đầu hoặc kết thúc khác kèm lý do, hoặc một thông tin còn thiếu hay sai. AI đối chiếu với các nguồn của ghim này, tìm nguồn tốt hơn và thêm mọi trang ủng hộ bạn. Các nguồn của chính ghim vẫn được tính nhiều nhất. Hình ảnh thể hiện nội dung khác hoặc thể hiện kém cũng được xem xét, rồi bị hạ xuống hoặc thay thế.

Published cost and electrical output

Project-specific research

Scope and evidence

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Inventory unit details — gem-L100000500364

Inventory unit details — eia-68635

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Inventory unit details — gem-L100000500364

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Đề xuất chỉnh sửa

Published cost and electrical output

Project-specific research

Scope and evidence

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Inventory unit details — gem-L100000500364

Inventory unit details — eia-68635

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Inventory unit details — gem-L100000500364

Operator and regulator research, October 11, 2026

Earlier pin evidence / inventory snapshot

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Additional August 2026 inventory evidence

Đề xuất chỉnh sửa

Thẻ

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