Record #00445Technology archive
The Soviet Obninsk Nuclear Power Plant connected to the Moscow grid on 27 June 1954, becoming the first nuclear power station to supply a conventional grid according to the IAEA. Its electrical output was about 5 MW, distinct from EBR-I's 1951 experimental demonstration.
Achievement date
1954
1954-06-27
Obninsk used the AM-1 water-cooled, graphite-moderated reactor with a net electrical capacity of about 5 MW, demonstrating early civilian nuclear power.
The US EBR-I reactor produced electricity in 1951, but did not supply a conventional public grid. This record is specifically about grid supply.
The station shut permanently on 29 April 2002 and was subsequently preserved as a nuclear technology heritage site.
The record conclusion has sufficient verification support.
Basis: direct confirmation by an authority
The IAEA explicitly dates connection to the Moscow grid to 27 June 1954, distinct from experimental electricity generation in 1951. Present-day Russia is used for geographic parenting only, without rewriting the station's 1954 Soviet historical jurisdiction.
Current Entry identifies the current entry in this archive; it does not establish that the record is still held today.
The record value on this page is organized from the public sources above. Measurement methods may differ; JiLuDB follows the unified method described for each entry.
Help keep the archive accurate
If a fact has changed, a value is incorrect, or you know a more authoritative source, leave a note. Feedback enters an administrator review workflow and never edits a record directly.
ARCHIVE VISUAL / 01
NOT TO SCALE
