Pilgrim 1

Permanent Shutdown

Details

Reactor Type	Boiling Water Reactor (or BWR)
Model	BWR-3 (Mark 1)
Owner	Entergy Nuclear Operations, Inc.
Operator	Entergy Nuclear Operations, Inc.

Timeline

Construction Start	Monday, 26 August 1968
First Criticality	Friday, 16 June 1972
First Grid Connection	Wednesday, 19 July 1972
Commercial Operation	Friday, 1 December 1972
Permanent Shutdown	Friday, 31 May 2019

Specifications

Capacity Net	677 MWe
Capacity Gross	711 MWe
Thermal Capacity	2028 MWt
Design Net Capacity	655 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 (%)
1972	687	1875	889.20	68.70	100.00	100.00	59.60	59.60
1973	655	7574	4074.20	86.50	88.10	89.10	71.00	70.10
1974	670	3435	1973.10	39.20	39.20	64.90	33.60	52.40
1975	668	6239	2587.30	71.20	44.10	58.20	44.20	49.80
1976	665	5330	2415.50	60.70	41.10	54.00	41.40	47.70
1977	670	5379	2652.20	61.40	45.20	52.20	45.20	47.20
1978	669	7276	4376.70	83.10	74.80	56.00	74.70	51.70
1979	670	7828	4844.60	89.40	82.50	59.70	82.50	56.10
1980	670	4952	3044.10	56.40	56.50	59.30	51.70	55.60
1981	670	5767	3444.10	65.80	66.00	60.00	58.70	55.90
1982	670	5597	3287.10	63.90	64.10	60.40	56.00	55.90
1983	670	7640	4711.90	87.20	87.30	62.90	80.30	58.10
1984	663	34	3.52	0.40	1.40	57.80	0.10	53.30
1985	670	8013	4950.97	91.50	91.50	60.30	84.60	55.70
1986	670	1646	1027.53	18.80	18.80	57.40	17.50	53.00
1987	670	0	0.00	0.00	0.00	53.60	0.00	49.40
1988	670	0	0.00	0.00	0.00	50.20	0.00	46.40
1989	670	4919	1707.76	56.20	56.30	50.60	29.10	45.40
1990	670	6784	4243.22	77.40	77.50	52.10	72.30	46.80
1991	670	5572	3424.54	63.60	63.70	52.70	58.40	47.40
1992	670	7400	4741.97	84.20	84.30	54.30	80.60	49.10
1993	670	6880	4340.78	78.50	78.60	55.40	74.00	50.30
1994	670	6069	3824.08	69.30	69.40	56.00	65.20	51.00
1995	670	6962	4485.85	79.50	79.50	57.10	76.40	52.10
1996	670	8345	5324.34	95.00	95.00	58.60	90.50	53.70
1997	670	6840	4310.43	78.10	78.10	59.40	73.40	54.40
1998	670	8760	5698.41	100.00	100.00	61.00	97.10	56.10
1999	670	7141	4473.33	81.50	81.60	61.70	76.20	56.80
2000	670	8454	5512.25	96.20	96.30	63.00	93.70	58.10
2001	653	7884	5144.04	90.00	90.00	63.90	89.00	59.20
2002	653	8760	5769.07	100.00	100.00	65.10	100.80	60.50
2003	684	7548	4977.18	86.20	85.80	65.70	84.60	61.30
2004	684	8721	5939.28	99.30	99.30	66.80	98.80	62.50
2005	685	8166	5474.03	93.20	93.20	67.60	91.20	63.40
2006	685	8684	5829.21	99.10	99.10	68.60	97.10	64.40
2007	685	7774	5119.79	88.70	88.80	69.20	85.30	65.00
2008	685	8656	5868.96	98.50	98.60	70.00	97.50	66.00
2009	684	8012	5396.02	91.50	91.50	70.60	90.10	66.60
2010	685	8760	5917.81	100.00	100.00	71.40	98.60	67.50
2011	685	7710	5085.18	88.00	88.00	71.80	84.70	67.90
2012	677	8714	5876.65	99.20	99.20	72.50	98.80	68.70
2013	677	6796	4326.48	77.60	81.20	72.70	72.90	68.80
2014	677	8640	5769.15	98.60	98.60	73.30	97.30	69.50
2015	677	7507	4993.30	85.70	85.70	73.60	84.20	69.80
2016	677	8222	5412.83	93.60	93.60	74.10	91.00	70.30
2017	677	7658	5046.84	87.40	85.60	74.30	85.10	70.60
2018	677	7265	4440.99	82.90	84.40	74.60	74.90	70.70
2019	677	2159	1398.01	59.60	100.00	74.80	57.00	70.60