Skip to content
Skip to navigation
Contact Us
IAEA.org
NUCLEUS
World Statistics
Country Statistics
Publications
Glossary
About PRIS
WINFRITH SGHWR
Permanent Shutdown
Reactor Details
Reactor Type
Model
Owner
Operator
SGHWR
UNITED KINGDOM ATOMIC ENERGY AUTHORITY
UNITED KINGDOM ATOMIC ENERGY AUTHORITY
Reference Unit Power (Net Capacity)
Design Net Capacity
Gross Capacity
Thermal Capacity
92
MW
e
92
MW
e
100
MW
e
318
MW
t
Construction Start Date
First Criticality Date
01 May, 1963
01 Sep, 1967
First Grid Connection
Commercial Operation Date
01 Dec, 1967
01 Jan, 1968
Permanent Shutdown Date
11 Sep, 1990
LifeTime Performance
Electricity Supplied
Energy Availability Factor
Operation Factor
Energy Unavailability Factor
Load Factor
10.96 TW.h
61.2 %
60.9 %
38.8 %
60.7 %
Lifetime performance calculated up to year
1990
Operating History
Year
Electricity Supplied
[GW.h]
Reference Unit Power
[MW]
Annual Time On Line
[h]
Operation Factor
[%]
Energy Availability Factor
[%]
Load Factor
[%]
Annual
Cumulative
Annual
Cumulative
1967
Data from a trial operation not provided
1968
Data Not Provided
1969
"
1970
"
1971
507.100
100
5374
61.4
57.9
NC
57.9
NC
1972
236.700
100
2477
28.2
26.9
NC
27.0
NC
1973
528.300
100
5346
61.0
60.1
48.3
60.3
48.4
1974
489.100
100
4998
57.0
55.8
50.2
55.8
50.2
1975
533.600
100
5337
60.9
60.2
52.2
60.9
52.4
1976
421.000
92
4610
52.5
60.0
53.4
52.1
52.3
1977
536.000
92
5737
65.5
72.4
55.9
66.5
54.2
1978
551.000
92
5864
66.9
63.6
56.8
68.4
55.9
1979
538.000
92
5780
66.0
67.6
58.0
66.8
57.0
1980
565.000
92
5980
68.1
70.1
59.2
69.9
58.3
1981
491.000
92
5650
64.5
60.4
59.2
60.9
58.5
1982
542.000
92
6228
71.1
67.1
59.9
67.2
59.2
1983
651.000
93
6468
73.8
79.6
61.4
79.9
60.8
1984
546.000
92
5831
66.4
67.2
61.8
67.6
61.2
1985
388.800
92
4157
47.4
47.1
60.8
48.2
60.4
1986
538.000
92
5825
66.5
66.2
61.2
66.8
60.8
1987
518.000
92
5619
64.1
63.8
61.3
64.3
61.0
1988
492.000
92
5331
60.7
60.5
61.3
60.9
61.0
1989
423.290
92
4594
52.4
51.2
60.7
52.5
60.6
1990
368.000
92
4064
65.2
74.9
61.2
64.1
60.7
Performance indicators are calculated from the Commercial Operation Date.
NC – cumulative values not calculated when more than 50% of required data is missing in PRIS
Above data generated by the PRIS database. Last update on 2024-12-04
Previous
(WINDSCALE AGR)
(WYLFA-1)
Next
UNITED KINGDOM
BERKELEY-1
BERKELEY-2
BRADWELL-1
BRADWELL-2
CALDER HALL-1
CALDER HALL-2
CALDER HALL-3
CALDER HALL-4
CHAPELCROSS-1
CHAPELCROSS-2
CHAPELCROSS-3
CHAPELCROSS-4
DOUNREAY DFR
DOUNREAY PFR
DUNGENESS A-1
DUNGENESS A-2
DUNGENESS B-1
DUNGENESS B-2
HARTLEPOOL A-1
HARTLEPOOL A-2
HEYSHAM A-1
HEYSHAM A-2
HEYSHAM B-1
HEYSHAM B-2
HINKLEY POINT A-1
HINKLEY POINT A-2
HINKLEY POINT B-1
HINKLEY POINT B-2
HINKLEY POINT C-1
HINKLEY POINT C-2
HUNTERSTON A-1
HUNTERSTON A-2
HUNTERSTON B-1
HUNTERSTON B-2
OLDBURY A-1
OLDBURY A-2
SIZEWELL A-1
SIZEWELL A-2
SIZEWELL B
TORNESS-1
TORNESS-2
TRAWSFYNYDD-1
TRAWSFYNYDD-2
WINDSCALE AGR
WINFRITH SGHWR
WYLFA-1
WYLFA-2