Timeline · 1974

The world's nuclear fleet in 1974

In 1974, 152 nuclear reactors were operating in 21 countries, 54.4 GWe net, with 161 under construction.

Compared with 1973, the operating fleet grew by 17 reactors. 25 reactors were connected to the grid that year, 17,357 MWe, mostly in United States (11), Japan (3) and Russia (3). 4 units were permanently shut down, 413 MWe. Argentina and Bulgaria connected their first nuclear reactor in 1974. The countries with the most operating capacity were United States (30,475 MWe), United Kingdom (4,515 MWe) and Japan (3,697 MWe).

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Connected to the grid in 1974

Unit	Country	Type	Model	MWe
Atucha 1	Argentina	PHWR	Siemens-KWU	340
Doel 1	Belgium	PWR	WH 2 loops	445
Kozloduy 1	Bulgaria	PWR	VVER-440/V-230	408
Biblis A	Germany	PWR	unknown	1,167
Greifswald 2	Germany	PWR	VVER-440/V-230	408
Fukushima Daiichi 3	Japan	BWR	BWR-4	760
Hamaoka 1	Japan	BWR	BWR-4	515
Takahama 1	Japan	PWR	Mitsubishi (3-loop)	780
Bilibino 1	Russia	LWGR	EGP-6	11
Bilibino 2	Russia	LWGR	EGP-6	11
Kola 1-2	Russia	PWR	VVER V-230	411
Oskarshamn 2	Sweden	BWR	ASEA-II	638
Ringhals 1	Sweden	BWR	ASEA-I	881
Ringhals 2	Sweden	PWR	WH 3-loops	852
Arkansas Nuclear One 1	United States	PWR	B & W (DRY-Cont)	836
Browns Ferry 2	United States	BWR	BWR-4 (Mark 1)	1,200
Cooper	United States	BWR	BWR-4 (Mark 1)	769
Duane Arnold 1	United States	BWR	BWR-4 (WET)	601
Edwin I Hatch 1	United States	BWR	BWR-4 (Mark 1)	876
Kewaunee	United States	PWR	WH 2-loop (DRY)	566
Oconee 3	United States	PWR	B & W (DRY)	859
Peach Bottom 2	United States	BWR	BWR-4 (Mark 1)	1,300
Peach Bottom 3	United States	BWR	BWR-4 (Mark 1)	1,331
Prairie Island 2	United States	PWR	WH 2-loop (DRY)	519
Rancho Seco 1	United States	PWR	WH (DRY)	873

Shut down in 1974

Unit	Country	Type	Model	MWe	Grid connection
Niederaichbach 1	Germany	HWGCR	Pressure tube reactor	106	1973
Agesta	Sweden	PHWR	R3	10	1964
Indian Point 1	United States	PWR	unknown	257	1962
Peach Bottom 1	United States	HTGR	—	40	1967

Countries by operating capacity in 1974

#	Country	Reactors	MWe	Under construction
1	United States	49	30,475	58
2	United Kingdom	29	4,515	11
3	Japan	9	3,697	14
4	Russia	15	3,504	10
5	Canada	7	2,538	6
6	France	11	2,526	8
7	Germany	9	1,951	14
8	Switzerland	3	1,103	2
9	Spain	3	1,067	3
10	Italy	3	563	1
11	Netherlands	2	537	—
12	Sweden	1	473	8
13	India	3	434	3
14	Bulgaria	1	408	3
15	Argentina	1	340	1
16	Slovakia	1	93	2
17	Pakistan	1	90	—
18	Kazakhstan	1	52	—
19	Puerto Rico	1	18	—
20	Belgium	1	10	3
21	Panama	1	10	—
22	Armenia	0	0	1
23	Brazil	0	0	1
24	Finland	0	0	3
25	Hungary	0	0	2
26	South Korea	0	0	1
27	Taiwan	0	0	2
28	Ukraine	0	0	4