A bill to amend the National Energy Conservation Policy Act to include the installation of mechanical insulation property as an energy or water efficiency measure, and for other purposes.

This bill, designated as S. 4312 in the 119th Congress and introduced on April 16, 2026, aims to amend the National Energy Conservation Policy Act to incorporate the installation of mechanical insulation property as a recognized energy or water efficiency measure, along with addressing other objectives specified within the proposed legislation.