Mihama 1

Permanent Shutdown

Details

Reactor Type	Pressurised Water Reactor (or PWR)
Model	W (2-loop)
Owner	Kansai Electric Power Co.
Operator	Kansai Electric Power Co.

Timeline

Construction Start	Wednesday, 1 February 1967
First Criticality	Wednesday, 29 July 1970
First Grid Connection	Saturday, 8 August 1970
Commercial Operation	Saturday, 28 November 1970
Permanent Shutdown	Monday, 27 April 2015

Specifications

Capacity Net	320 MWe
Capacity Gross	340 MWe
Thermal Capacity	1031 MWt
Design Net Capacity	320 MWe

Operational History

Electricity Supplied (GWh)

Energy Availability Factor (%)

Total Electricity Supplied (GWh)

Reactor History

Year	Reference Unit Power (MWe)	Annual Time Online (Hours)	Electricity Supplied (GWh)	Operation Factor (%)	Energy Availability Annual (%)	Energy Availability Cumulative (%)	Load Factor Annual (%)	Load Factor Cumulative (%)
1970	320	2251	530.00	91.80	100.00	100.00	96.60	96.60
1971	320	5977	1953.80	68.20	100.00	100.00	69.70	71.80
1972	320	4156	1259.95	47.30	47.40	74.70	44.80	58.80
1973	320	4865	945.30	55.50	48.00	66.10	33.70	50.70
1974	320	2151	391.80	24.60	20.90	55.00	14.00	41.70
1975	320	0	0.00	0.00	0.00	44.20	0.00	33.50
1976	320	0	0.00	0.00	0.00	36.90	0.00	28.00
1977	320	0	0.00	0.00	0.00	31.70	0.00	24.00
1978	320	1059	118.70	12.10	4.20	28.30	4.20	21.60
1979	320	1014	115.40	11.60	4.10	25.70	4.10	19.70
1980	320	4472	1012.90	50.90	36.00	26.70	36.00	21.30
1981	320	3931	1178.10	44.90	42.00	28.10	42.00	23.20
1982	320	455	92.80	5.20	3.30	26.00	3.30	21.50
1983	320	3731	1164.40	42.60	41.50	27.20	41.50	23.10
1984	320	5053	1576.63	57.50	56.00	29.30	56.10	25.40
1985	320	7077	2240.20	80.80	80.00	32.60	79.90	29.00
1986	320	8482	2707.24	96.80	96.30	36.60	96.60	33.20
1987	320	7150	2261.53	81.60	81.60	39.20	80.70	36.00
1988	320	6623	2075.43	75.40	75.40	41.20	73.80	38.10
1989	320	5418	1693.18	61.80	61.80	42.30	60.40	39.30
1990	320	6058	1938.23	69.20	66.90	43.50	69.10	40.70
1991	320	7615	2371.91	86.90	4.50	41.70	84.60	42.80
1992	320	3511	1041.10	40.00	37.20	41.50	37.00	42.60
1993	320	5300	1663.30	60.50	58.50	42.20	59.30	43.30
1994	320	1160	369.89	13.20	13.40	41.00	13.20	42.00
1995	320	0	0.00	0.00	0.00	39.40	0.00	40.40
1996	320	7186	2245.93	81.80	79.70	40.90	79.90	41.90
1997	320	7083	2271.49	80.90	80.80	42.40	81.00	43.30
1998	320	7304	2321.52	83.40	82.50	43.80	82.80	44.70
1999	320	8013	2530.43	91.50	90.00	45.40	90.30	46.30
2000	320	7439	2381.22	84.70	84.50	46.70	84.70	47.60
2001	320	6574	2104.40	75.00	74.90	47.60	75.10	48.50
2002	320	6767	2158.60	77.20	76.60	48.50	77.00	49.40
2003	320	8760	2880.61	100.00	99.90	50.10	102.80	51.00
2004	320	5389	1764.15	61.40	61.30	50.40	62.80	51.30
2005	320	4022	1194.93	45.90	41.40	50.20	42.60	51.10
2006	320	7305	2353.29	83.40	83.30	51.10	84.00	52.00
2007	320	2723	854.69	31.10	30.30	50.50	30.50	51.40
2008	320	6561	2119.52	74.70	74.70	51.10	75.40	52.00
2009	320	6390	2070.07	73.00	72.20	51.70	73.80	52.60
2010	320	7859	2521.42	89.70	88.30	52.60	90.00	53.50
2011	320	0	0.00	0.00	0.00	51.30	0.00	52.20
2012	320	0	0.00	0.00	0.00	50.10	0.00	51.00
2013	320	0	0.00	0.00	0.00	48.90	0.00	49.80
2014	320	0	0.00	0.00	0.00	47.80	0.00	48.70
2015	320	0	0.00	0.00	0.00	47.50	0.00	48.30