Timeline · 1999

The world's nuclear fleet in 1999

In 1999, 451 nuclear reactors were operating in 35 countries, 359.2 GWe net, with 39 under construction.

The operating fleet was the same size as in 1998. 4 reactors were connected to the grid that year, 2,735 MWe, mostly in France (1), India (1) and Slovakia (1). 2 units were permanently shut down, 652 MWe. The countries with the most operating capacity were United States (103,810 MWe), France (57,318 MWe) and Japan (43,487 MWe).

Connected to the grid in 1999

UnitCountryTypeModelMWe
Civaux 2France FrancePWRN4 REP 14501,495
Kaiga 2India IndiaPHWR202
Mochovce 2Slovakia SlovakiaPWRVVER-440/V-213469
Wolsong 4South Korea South KoreaPHWRCANDU-6569

Shut down in 1999

UnitCountryTypeModelMWeGrid connection
AktauKazakhstan KazakhstanFBRBN-350521973
Barseback 1Sweden SwedenBWRASEA-II6001975

Countries by operating capacity in 1999

#CountryReactorsMWeUnder construction
1United States United States109103,8101
2France France5657,3184
3Japan Japan5343,4871
4Germany Germany1921,476
5Russia Russia3520,4494
6Canada Canada2215,4091
7South Korea South Korea1613,3653
8United Kingdom United Kingdom3512,345
9Ukraine Ukraine1412,1324
10Sweden Sweden1110,452
11Spain Spain97,710
12Belgium Belgium75,922
13Taiwan Taiwan65,052
14Bulgaria Bulgaria63,638
15Switzerland Switzerland53,346
16Finland Finland42,794
17Lithuania Lithuania22,370
18China China32,2567
19Slovakia Slovakia52,2153
20Hungary Hungary41,916
21Czech Republic Czech Republic41,9072
22South Africa South Africa21,854
23India India101,8394
24Mexico Mexico21,552
25Argentina Argentina29481
26Slovenia Slovenia1696
27Romania Romania16501
28Philippines Philippines1621
29Brazil Brazil16091
30Netherlands Netherlands1482
31Armenia Armenia1416
32Pakistan Pakistan1901
33 Puerto Rico118
34 Panama110
35North Korea North Korea15
36Iran Iran001

Data: Global Energy Monitor (CC BY 4.0), IAEA PRIS 2025, Wikipedia (CC BY-SA), Wikidata and Wikimedia Commons. Capacities in net MWe unless stated.

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