The International Code Council International Energy Conservation Code (IECC)  applies to commercial buildings and the building site and associated systems and equipment. The intent of the code is to regulate the design and construction of buildings for the effective use and conservation of energy over the useful life of each building. This code is intended to provide flexibility to permit use of innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, health, or environmental requirements contained in any other applicable codes or ordinances.