Produced the California Energy Commission to aid in the calculation of climate sensitive building energy efficiency standards set by title 24. "The Energy Commission established 16 climate zones that represent a geographic area for which an energy budget is established. These energy budgets are the basis for the standards...." "[An] energy budget is the maximum amount of energy that a building, or portion of a building [...] can be designed to consume per year." The California Building Climate Zone Areas Map has produced geographic climactic divisions based not on vernacular distinctions such as 'desert' and 'alpine' but rather a variety of factors such as energy use and weather patterns. There are four such zones represented in the city of Los Angeles.