In this subtitle the following words have the meanings indicated. “Building” means: any new structure with an area of at least 5,000 square feet; any change to an existing structure that: will add at least 10% gross floor space to the structure and has an estimated construction cost of more than $25,000; or constitutes a major renovation; or any structure with an area of at least 5,000 square feet that is leased or owned by the State. “Energy-consumption analysis” means an evaluation, by type and amount of energy used, of: each piece of equipment that serves a building, including any piece of equipment that is used: to cool the building; to heat the building; or to heat water used in the building; each piece of equipment on the building site that is: used to generate electricity for the building; or powered, in whole or in part, by coal, electricity, natural gas, oil, sun, or wind; and each conservation measure included in the building that decreases the energy requirements of the building. “Energy performance index” means a number that: describes the energy requirements of a building measured at the building boundaries under defined internal and external ambient conditions over an entire seasonal cycle; and is stated either: per square foot of floor space in the building; or per cubic foot of occupied volume of the building. “Life of the building” has the meaning established by the Department under § 4-808 of this subtitle. “Life-cycle costs” means the sum of the following costs of a building: the cost of initial construction; the cost of all energy conservation measures; the cost of operation and maintenance, including labor and materials, for the life of the building; the cost, over the life of the building, of the fuel used by: the equipment that controls or provides the humidity, lighting, power, temperature, and ventilation of the building; and other energy-using equipment in the building; and the other costs incident to owning the building. “Primary procurement unit” has the meaning provided in § 11-101 of this article.