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The International Energy Conservation Code (IECC) is a building code created by the International Code Council in 2000. It is a model code adopted by many states and municipal governments in the United States for the establishment of minimum design and construction requirements for energy efficiency .
Provisions in the commercial sector of the model codes affect building design and construction factors such as: thermal envelope, water heating, HVAC, and lighting systems. [7] [22] In the 2021 IECC model code, for example, there are provisions that reference ASHRAE 90.1 concerning insulation R-values for opaque parts of the building envelope. [22]
“Key changes to the 2021 IECC improve efficiency by 9.4 percent and reduce greenhouse gasses by 8.7 percent over the 2018 ... New requirements for insulation, lighting and ventilation testing ...
The IgCC addressed some aspects of this issue in its 2015 version by introducing a compliance pathway based on the energy use of the building over a three-year period, where a building will be required to meet baseline requirements outlined in the International Energy Conservation Code (IECC).
ANSI/ASHRAE/IES Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings is an American National Standards Institute (ANSI) standard published by ASHRAE and jointly sponsored by the Illuminating Engineering Society (IES) that provides minimum requirements for energy efficient designs for buildings except for low-rise residential buildings (i.e. single-family homes ...
IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety; IEC 60062 Marking codes for resistors and capacitors; IEC 60063 Preferred number series for resistors and capacitors; IEC 60064 Tungsten filament lamps for domestic and similar general lighting purposes – Performance requirements
It focuses on such areas such as residential photovoltaic systems, thermal envelope standards and non-residential lighting requirements. Homes built under this code are about 53% more energy efficient than those built to comply with the 2016 Energy Code. [6] This code provides a market for "smart" technologies. [7]
At least 50% of the general lighting in primary zones must be controlled separately from other lighting, with automatic control required for larger zones. The code encourages automatic daylight harvesting in secondary zones by awarding power adjustment factor credits that can be applied to the lighting design. [ 23 ]