Summary 1. Spent Nuclear Fuel from Commercial Power Reactors Stored at Commercial Sites.

Total Metric Tons of Initial Heavy Metal (MTiHM)
POWER REACTOR TYPE 1968 - DEC. 31, 2022
Boiling Water Reactor (BWR) 32,010
Pressurized Water Reactor (PWR) 58,953
Total 90,963
Number of Assemblies in Dry Storage (ISFSI)*
POWER REACTOR TYPE 1986 - DEC. 31, 2022
Boiling Water Reactor (BWR) 94,407
Pressurized Water Reactor (PWR) 74,774
Total 169,181
Number of Assemblies in Wet Storage (Pool)
POWER REACTOR TYPE 1968 - DEC. 31, 2022
Boiling Water Reactor (BWR) 84,966
Pressurized Water Reactor (PWR) 60,731
Total 145,697
Total Number of Assemblies
POWER REACTOR TYPE 1968 - DEC. 31, 2022
Boiling Water Reactor (BWR) 179,373
Pressurized Water Reactor (PWR) 135,505
Total 314,878

* ISFSI = Independent Spent Fuel Storage Installation

Source: U.S. Department of Energy, Nuclear Fuel Data Survey data collected using EIA Form GC-859 through 2022.

Notes: A number of assemblies discharged before 1972, which were reprocessed, are not included in this table (no GC-859 data are available for assemblies reprocessed before 1972). This table shows only assemblies reported on Form GC-859. Spent nuclear fuel at the Morris Operation ISFSI, the only pool-based ISFSI, is included under Wet Storage (Pool). Totals may not equal sum of components because of independent rounding.