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The NYC Benchmarking Law, Local Law 84 of 2009 as amended by Local Law 133 of 2016, requires owners of large buildings to measure their energy and water consumption annually in a process called benchmarking. The law standardizes this process by requiring building owners to enter their annual energy and water use in the U.S. Environmental Protection Agency's (EPA) online tool, ENERGY STAR Portfolio Manager, and use the tool to submit data to the city.
