Building Energy System Law and Legal Definition

According to 10 CFR 436.11 [Title 10 Energy; Chapter II Department of Energy; Subchapter D Energy Conservation; Part 436 Federal Energy Management and Planning Programs; Subpart A Methodology and Procedures for Life Cycle Cost Analyses], the term building energy system means “an energy conservation measure or any portion of the structure of a building or any mechanical, electrical, or other functional system supporting the building, the nature or selection of which for a new building influences significantly the cost of energy consumed.”