Reactor design lines

A design line is a specific reactor product, not a physics family. Two AP1000s are interchangeable in a way that two pressurised water reactors are not, same fuel assembly, same vendor, same licensing basis. That is what makes design lines the useful unit for comparing build records and for tracing fuel supply upstream.

Design	Vendor	Type	Gen	Operating	Building	All units
HPR-1000	China National Nuclear Corporation	PWR	III	8	19	66
CAP1000	State Power Investment Corporation	PWR	III+	-	9	38
VVER-1200/V-491	Rosatom	PWR	III+	4	6	17
APR-1400	Korea Hydro & Nuclear Power	PWR	III	8	4	21
Indian PHWR	Nuclear Power Corporation of India	PHWR	II	17	3	22
VVER-1200	Rosatom	PWR	III+	-	3	21
AP-1000	Westinghouse Electric Company	PWR	III+	6	2	117
EPR	Framatome	PWR	III+	4	2	24
ABWR	GE Vernova Hitachi Nuclear Energy	BWR	III	1	2	11
VVER V-213	Rosatom	PWR	II	19	1	25
CAP1400	State Power Investment Corporation	PWR	III+	1	1	10
BWRX-300	GE Vernova Hitachi Nuclear Energy	BWR	III+	-	1	47
VVER-TOI	Rosatom	PWR	III+	-	1	17
Westinghouse 4-loop	Westinghouse Electric Company	PWR	II	28	-	30
VVER V-320	Rosatom	PWR	II	25	-	29
Westinghouse 3-loop	Westinghouse Electric Company	PWR	II	22	-	25
CP1	Framatome	PWR	II	20	-	20
P4 1300 MWe series	Framatome	PWR	II	20	-	20
CPR-1000	China General Nuclear Power Group	PWR	II+	18	-	22
BWR-4	GE Vernova Hitachi Nuclear Energy	BWR	II	17	-	31
OPR-1000	Korea Hydro & Nuclear Power	PWR	II+	12	-	12
CP2	Framatome	PWR	II	10	-	10
CANDU 6	AtkinsRéalis (Candu Energy)	PHWR	II	9	-	14
Westinghouse 2-loop	Westinghouse Electric Company	PWR	II	9	-	13
BWR-5	GE Vernova Hitachi Nuclear Energy	BWR	II	8	-	25
AGR	consortium	GCR	II	8	-	15
Mitsubishi 3-loop	Mitsubishi Heavy Industries	PWR	II	8	-	9
RBMK-1000	consortium	LWGR	II	7	-	19
Combustion Engineering 2-loop	Combustion Engineering	PWR	II	7	-	8
BWR-6	GE Vernova Hitachi Nuclear Energy	BWR	II	6	-	11
ASEA-Atom BWR	Westinghouse Electric Company	BWR	II	6	-	6
CNP-600	China National Nuclear Corporation	PWR	II	6	-	6
CNP-1000	China National Nuclear Corporation	PWR	II	6	-	6
BWR-3	GE Vernova Hitachi Nuclear Energy	BWR	II	5	-	9
B&W 177-FA	Babcock & Wilcox	PWR	II	5	-	8
Westinghouse F	Westinghouse Electric Company	PWR	II	5	-	5
CNP-300	China National Nuclear Corporation	PWR	II	5	-	5
CP0	Framatome	PWR	II	4	-	6
Mitsubishi 4-loop	Mitsubishi Heavy Industries	PWR	II	4	-	5
N4 1450 MWe series	Framatome	PWR	II	4	-	4
M310	Framatome	PWR	II	4	-	4
ACPR-1000	China General Nuclear Power Group	PWR	III	4	-	4
CANDU 750A	AtkinsRéalis (Candu Energy)	PHWR	II	4	-	4
CANDU 750B	AtkinsRéalis (Candu Energy)	PHWR	II	4	-	4
CANDU 500B	AtkinsRéalis (Candu Energy)	PHWR	II	4	-	4
CANDU 850	AtkinsRéalis (Candu Energy)	PHWR	II	4	-	4
System 80	Combustion Engineering	PWR	II	3	-	3
PHWR-700	Nuclear Power Corporation of India	PHWR	II+	2	-	16
VVER V-230	Rosatom	PWR	I	2	-	14
MAGNOX	consortium	GCR	I	1	-	30
NuScale	NuScale Power	PWR	III+	-	-	61
Xe-100	X-energy	HTGR	IV	-	-	16
SMR-300	Holtec International	PWR	III+	-	-	16
Mitsubishi 2-loop	Mitsubishi Heavy Industries	PWR	II	-	-	7

A further 132 model designations appear in the fleet data without a design page. Most are variant codes for a handful of families. Westinghouse loop counts, French CP and P4 series, GE BWR product numbers, rather than distinct products. They are shown on each reactor page as recorded, and their vendor is resolved where the designation makes it unambiguous.

Sources

Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06

How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data