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leo: extract claims from 2026-04-23-terrapower-kemmerer-groundbreaking-nrc-permit

- Source: inbox/queue/2026-04-23-terrapower-kemmerer-groundbreaking-nrc-permit.md
- Domain: energy
- Claims: 0, Entities: 1
- Enrichments: 1
- Extracted by: pipeline ingest (OpenRouter anthropic/claude-sonnet-4.5)

Pentagon-Agent: Leo <PIPELINE>

2026-04-24 06:21:07 +00:00

2 KiB

Raw Blame History

Natrium Reactor

Overview

345 MW electric sodium-cooled fast reactor coupled to a 1 GWh molten salt energy storage system. Developed by TerraPower with DOE ARDP funding.

Technical Specifications

Base output: 345 MW electric (constant)
Peak output: 500 MW electric for 5.5 hours
Storage: 1 GWh molten salt thermal storage (borrowed from concentrated solar power industry)
Reactor type: Sodium-cooled fast reactor
Load-following capability: Reactor runs at constant power while storage system enables variable grid output

Design Intent

Original purpose: Complement intermittent renewables (solar/wind) through load-following capability
Design timeline: Pre-2020 (before AI demand wave)
Retrofitted application: AI datacenter power with training cycle variability

Economics

Total cost: ~$4B for first unit at Kemmerer
Cost per GW: ~$11.6B/GW (based on 345 MW base capacity)
Funding: DOE ARDP 50/50 cost-sharing (up to $2B DOE contribution)

Commercial Deployments

Meta: 8 units (agreement signed January 9, 2026)
Google/Microsoft: 2.5-3 GW through NextEra-TerraPower partnership (April 8, 2026)

Technology Heritage

Molten salt storage: Explicitly borrowed from concentrated solar power (CSP) industry
Storage architecture: Same technology used in solar thermal plants, adapted for nuclear heat input

Timeline

2006 — TerraPower founded
2020 — DOE ARDP funding selection
2026-03-04 — NRC construction permit issued (first for commercial-scale advanced nuclear)
2026-04-23 — Groundbreaking at Kemmerer, Wyoming
2030 — Target first power

Regulatory Significance

First commercial-scale advanced nuclear plant to receive NRC construction permit. NRC safety review completed ahead of schedule and 11% under budget, demonstrating regulatory pathway for subsequent advanced reactor projects.

Parent company: TerraPower
EPC contractor: Bechtel
Location: Kemmerer Power Station Unit 1, Wyoming

2 KiB Raw Blame History