First criticality reached at Olkiluoto-3

December 21, 2021, 12:02PMNuclear News
Olkiluoto-3 (Photo: TVO)

The long-delayed Unit 3 at Finland’s Olkiluoto nuclear power plant has achieved initial criticality, plant owner and operator Teollisuuden Voima Oyj (TVO) announced this morning. The reactor, a 1600-MWe Generation III+ EPR supplied by Framatome, started up at 3:22 a.m. local time.

Responding to System Demand II: Extreme Scenarios

December 14, 2014, 3:12PMANS Nuclear CafeWill Davis

Gravelines Units 1 through 6, France.  Image courtesy AREVA USA.

Gravelines Units 1 through 6, France. Image courtesy AREVA USA.

The continued introduction of renewables onto the electric grid in the United States is ensuring that discussion of whether or not these assets can be integrated with existing or expected designs of other sources continues. In this discussion, nuclear energy is often wrongly described as "on or off"-but in fact, nuclear plants can and do load follow (respond to changing system demands) although it's a matter of both design and owner utilization-with a focus on economics-that determines if or when any actually do.