Certain buildings required to meet energy performance standards, reports required, and money appropriated.

HF 3179 requires large government-owned and private buildings (50,000+ square feet) to meet increasingly strict energy efficiency standards, aiming to cut greenhouse gas emissions from these buildings by 90% by 2045 compared to 2005 levels. Buildings are classified into four tiers based on ownership and size, with deadlines ranging from 2042 for government buildings (Class 1) to 2045 for large private buildings (Class 4). Owners must submit annual progress reports starting in 2028 and demonstrate steady improvement toward interim targets every five years. The law includes limited exemptions for buildings facing financial distress and specifically addresses multifamily affordable housing properties meeting certain eligibility criteria.