Category: Mechanical Engineering

What is NYC Local Law 87?

NYC Local Law 87, enacted in 2009,  requires buildings over 50,000 gross square feet undergo periodic energy audit and retro-commissioning measures. The intent of this law is to inform building owners of their energy consumption through energy audits.  Energy audits include surveys and analyses of energy use. Retro-commissioning is the process of ensuring correct equipment […]

What is NYC Local Law 84?

NYC Local Law 84, enacted in 2009, requires buildings owners with buildings over 50,000 sf to annually measure their energy and water consumption. This process is called benchmarking. LL84 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 […]