Prairie Island 1

Operable

Details

Reactor Type	Pressurised Water Reactor (or PWR)
Model	W (2-loop) DRYAMB
Owner	Xcel Energy
Operator	Northern States Power Co. (Subsidiary Of Xcel Energy)

Timeline

Construction Start	Tuesday, 25 June 1968
First Criticality	Saturday, 1 December 1973
First Grid Connection	Tuesday, 4 December 1973
Commercial Operation	Sunday, 16 December 1973

Specifications

Capacity Net	522 MWe
Capacity Gross	566 MWe
Thermal Capacity	1677 MWt
Design Net Capacity	530 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 (%)
1973	520	312	7.20	-	-	-	-	-
1974	520	3848	1452.20	43.90	44.00	44.00	31.90	31.90
1975	520	7560	3694.20	86.30	81.20	62.60	81.10	56.50
1976	520	6801	3268.70	77.40	71.60	65.60	71.60	61.50
1977	511	7453	3714.50	85.10	82.90	69.80	83.00	66.80
1978	507	8012	3810.70	91.50	85.90	73.00	85.80	70.60
1979	503	6402	2910.90	73.10	65.80	71.80	66.10	69.80
1980	503	6863	3105.70	78.10	77.80	72.70	70.30	69.90
1981	503	7803	3838.60	89.10	88.90	74.70	87.10	72.00
1982	503	7960	3918.00	90.90	90.90	76.40	88.90	73.80
1983	503	7621	3888.90	87.00	87.20	77.50	88.30	75.30
1984	503	8285	4159.39	94.30	94.30	79.00	94.10	77.00
1985	503	7333	3678.45	83.70	83.40	79.40	83.50	77.50
1986	503	7870	3819.56	89.80	89.60	80.20	86.70	78.20
1987	503	7232	3590.27	82.60	82.20	80.30	81.50	78.40
1988	503	7800	3823.39	88.80	89.30	80.90	86.50	79.00
1989	503	8737	4392.28	99.70	99.80	82.10	99.70	80.30
1990	503	7764	3829.68	88.60	81.70	82.00	86.90	80.60
1991	503	7943	3987.08	90.70	90.50	82.50	90.10	81.20
1992	503	6844	3497.78	77.90	77.40	82.20	79.20	81.10
1993	513	8480	4377.99	96.80	96.80	83.00	98.90	82.00
1994	513	7258	3718.20	82.80	82.80	83.00	82.70	82.00
1995	513	8752	4519.04	99.90	99.90	83.80	100.60	82.80
1996	513	7327	3741.65	83.40	92.20	84.10	83.00	82.80
1997	513	6965	3522.80	79.50	79.50	83.90	78.40	82.70
1998	526	7948	4209.16	90.70	90.80	84.20	93.50	83.10
1999	522	7643	4068.78	87.20	87.20	84.30	89.00	83.30
2000	522	8499	4536.51	96.80	96.70	84.80	98.90	83.90
2001	522	6890	3641.74	78.60	78.80	84.60	79.60	83.80
2002	522	8268	4373.23	94.40	94.40	84.90	95.60	84.20
2003	522	8619	4596.35	98.40	98.40	85.40	101.00	84.80
2004	522	7017	3602.14	79.90	79.90	85.20	78.60	84.60
2005	522	8465	4518.40	96.60	96.70	85.60	98.80	85.00
2006	523	7785	4103.24	88.90	88.90	85.70	89.60	85.20
2007	551	8472	4457.09	96.70	96.70	86.00	92.30	85.40
2008	551	7780	4059.45	88.60	88.60	86.10	83.90	85.30
2009	551	6923	3600.15	79.00	79.00	85.90	74.60	85.00
2010	560	8760	4654.86	100.00	100.00	86.30	96.00	85.30
2011	521	7717	4128.39	88.10	87.70	86.30	87.20	85.40
2012	522	6961	3705.98	79.20	79.30	86.10	80.80	85.30
2013	522	8732	4654.69	99.70	99.70	86.50	101.80	85.70
2014	522	7264	3812.46	82.90	82.90	86.40	83.40	85.60
2015	522	7539	3991.22	86.10	86.10	86.40	87.30	85.70
2016	522	7903	4207.70	90.00	90.00	86.50	91.80	85.80
2017	522	8689	4565.00	99.20	99.20	86.80	99.80	86.10
2018	522	7916	4190.47	90.40	90.40	86.80	91.60	86.20
2019	522	8760	4772.56	100.00	100.00	87.10	104.40	86.60
2020	522	8092	4337.58	92.10	91.00	87.20	94.60	86.80
2021	522	8760	4772.37	100.00	100.00	87.50	104.40	87.20
2022	522	8137	4368.70	92.90	92.90	87.60	95.50	87.40
2023	522	6994	3780.99	79.80	99.50	87.80	82.70	87.30