Archive briefing · Event date: 16 April 2023. This retrospective summary was prepared on 4 November 2026.
TVO announced that the test-production phase at Olkiluoto 3 had ended and regular electricity production had begun. The company described the approximately 1,600-megawatt unit as a substantial addition to Finland’s domestic electricity supply.
A milestone for Satakunta
The plant is at Olkiluoto in Eurajoki. In its announcement, TVO said the project had a major regional economic impact, particularly in Satakunta, and involved workers from more than 80 countries.
What this archive item does not measure
The 2023 start date is a historical milestone. It does not describe the unit’s output, maintenance situation or electricity prices today. For operational information, check the operator’s latest production notices.
Source: TVO announcement, 16 April 2023. The illustration shows the older Olkiluoto 1 unit, not Olkiluoto 3.
