H.R. 4378 would authorize appropriations for the Department of Energy (DOE) to establish a test reactor to support research and development of advanced nuclear reactor technologies. Assuming appropriation of the authorized amounts, CBO estimates that implementing the bill would cost nearly $2 billion over the 2018-2027 period.
Enacting H.R. 4378 would not affect direct spending or revenues; therefore, pay-as-you-go procedures do not apply. CBO estimates that enacting H.R. 4378 would not increase net direct spending or on-budget deficits in any of the four consecutive 10-year periods beginning in 2028.
H.R. 4378 contains no intergovernmental or private-sector mandates as defined in the Unfunded Mandates Reform Act.