Under ConstructionOther / Unclassified

RELLIS Pilot

📍 Bryan, TX (Brazos County Co.)Developer: Last EnergyVendor / Tech: Last Energy

Capacity

5 MW

Expected Operation

2026

Reactor Type

Last Energy PWR-5

Regulatory Status

DOE approved the final Documented Safety Analysis 2026-10-08, moving the project to readiness review, the last step before authorization for criticality and operations. Facility built; full LEU core procured. Company says it plans criticality in October 2026.

Details

Primary Use

Research / demonstration

Grid Connection

ERCOT

Construction Start

2026

Research detail · verified 2026-10-10

Stage

Under construction

Commercial power

No (test, research, military or demonstration)

Stated target operation

Criticality planned in October 2026 (stated by Last Energy, per WNN 2026-10-08 coverage)

Key dates

2025-08-12 selected for DOE Reactor Pilot Program; 2025-10 partnership/land lease with Texas A&M System announced; 2026-01 groundbreaking (KBTX); 2026-05 PDSA approved by DOE; 2026-10-08 DSA approved

Workforce

Texas A&M says this would be the first reactor on a university campus in over 30 years; no specific training partnership or job numbers found.

Not verified / conflicts

Missed the July 4, 2026 goal. As of 2026-10-10 no criticality announcement found. Partnership announcement date: WNN says 2025-10-15; the TAMUS story page I opened showed a later date — exact date of the lease signing not confirmed.

Sources

Key Organizations

Developer

Last Energy

Power Purchase Agreements1 PPA

Texas A&M RELLIS Campus

announced

State Policy Context

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