# § 17084. Separate spaces with high-performance energy efficiency measures
**(a)** **Definitions** In this section:
**(1)** **High-performance energy efficiency measure** The term “high-performance energy efficiency measure” means a technology, product, or practice that will result in substantial operational cost savings by reducing energy consumption and utility costs.
**(2)** **Separate spaces** The term “separate spaces” means areas within a commercial building that are leased or otherwise occupied by a tenant or other occupant for a period of time pursuant to the terms of a written agreement.
**(b)** **Study**
**(1)** **In general** Not later than 1 year after April 30, 2015, the Secretary, acting through the Assistant Secretary of Energy Efficiency and Renewable Energy, shall complete a study on the feasibility of—
**(A)** significantly improving energy efficiency in commercial buildings through the design and construction, by owners and tenants, of separate spaces with high-performance energy efficiency measures; and
**(B)** encouraging owners and tenants to implement high-performance energy efficiency measures in separate spaces.
**(2)** **Scope** The study shall, at a minimum, include—
**(A)** descriptions of—
**(i)** high-performance energy efficiency measures that should be considered as part of the initial design and construction of separate spaces;
**(ii)** processes that owners, tenants, architects, and engineers may replicate when designing and constructing separate spaces with high-performance energy efficiency measures;
**(iii)** policies and best practices to achieve reductions in energy intensities for lighting, plug loads, heating, cooling, cooking, laundry, and other systems to satisfy the needs of the commercial building tenant;
**(iv)** return on investment and payback analyses of the incremental cost and projected energy savings of the proposed set of high-performance energy efficiency measures, including consideration of available incentives;
**(v)** models and simulation methods that predict the quantity of energy used by separate spaces with high-performance energy efficiency measures and that compare that predicted quantity to the quantity of energy used by separate spaces without high-performance energy efficiency measures but that otherwise comply with applicable building code requirements;
**(vi)** measurement and verification platforms demonstrating actual energy use of high-performance energy efficiency measures installed in separate spaces, and whether such measures generate the savings intended in the initial design and construction of the separate spaces;
**(vii)** best practices that encourage an integrated approach to designing and constructing separate spaces to perform at optimum energy efficiency in conjunction with the central systems of a commercial building; and
**(viii)** any impact on employment resulting from the design and construction of separate spaces with high-performance energy efficiency measures; and
**(B)** case studies reporting economic and energy savings returns in the design and construction of separate spaces with high-performance energy efficiency measures.
**(3)** **Public participation** April 30, 2015
Not later than 90 days after , the Secretary shall publish a notice in the Federal Register requesting public comments regarding effective methods, measures, and practices for the design and construction of separate spaces with high-performance energy efficiency measures.
**(4)** **Publication** The Secretary shall publish the study on the website of the Department of Energy.
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**Source Credit**: (Pub. L. 110–140, title IV, § 424, as added Pub. L. 114–11, title I, § 103(a), Apr. 30, 2015, 129 Stat. 183.)