Ignalina nuclear power plant 1
Retired Lithuania
Gross capacity
1,300MW
Ignalina nuclear power plant 1 is a light water graphite reactor unit at Ignalina nuclear power plant in Lithuania rated at 1,300 MW gross. It is retired. Commercial operation began 1 May 1985.
Specification
| Reactor type | Light water graphite reactor (LWGR) |
|---|---|
| Model | RBMK-1500 |
| Size class | Large |
| Coolant | Light water |
| Moderator | Graphite |
| Gross capacity | 1,300MW |
| Net capacity (reference) | 1,185MW |
| Net capacity (design) | 1,500MW |
| Thermal output | 4,800MWt |
| Typical enrichment | 2–2.6% U-235 |
Ownership & location
| Site | Ignalina nuclear power plant |
|---|---|
| Unit | 1 |
| Country | Lithuania |
| Owner | The Republic of Lithuania100% |
| Operator | Ignalina Nuclear Power Plant |
| Coordinates | 55.6023, 26.5598 |
Fuel chain for this unit
Fuel form
Slightly enriched uranium dioxide in pressure tubes
Enrichment
2–2.6% U-235
Who makes this assembly
- TVEL Fuel Company RBMK fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units —
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 1 May 1977Construction start
- 4 Oct 1983First criticality
- 31 Dec 1983Grid connection
- 1 May 1985Commercial operation
- 31 Dec 2004Permanent shutdown
Other units at Ignalina nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Ignalina nuclear power plant 2 | Retired | 1,300 |
Other RBMK-1500 units
2 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Ignalina nuclear power plant 2 | Lithuania | Retired | 1,300 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-08
- GEM.wiki entry (further reading) — CC BY-SA 4.0 — linked, not quoted