A minimum prescriptive requirement for on-site renewable energy.model energy standard or code at the national level include: Major additions appearing for the first time in a minimum-efficiency U.S. The 2022 edition of Standard 90.1 incorporates over 80 addenda to the 2019 edition. It is an indispensable reference for engineers and other professionals involved in design of buildings, sites, and building systems. It offers, in detail, the minimum energy efficiency requirements for design and construction of new sites and buildings and their systems, new portions of buildings and their systems, and new systems and equipment in existing buildings, as well as criteria for determining compliance with these requirements. This standard provides the minimum requirements for energy-efficient design of most sites and buildings, except low-rise residential buildings. Standard 90.1 has been a benchmark for commercial building energy codes in the United States, and a key basis for codes and standards around the world, for almost half a century.
