“…A voluntary national market for energy savings certificates could develop, like the market for RECs, but it is not clear when this would happen under current policies; similarly, energy savings certificates might be used to comply with carbon restrictions, like in the Regional Greenhouse Gas Initiative (Friedman, Bird, and Barbose, 2008). After reviewing existing programs, Vine and Hamrin (2008) itemize the elements of an effective energy-savings trading 33 Any of these names can be considered "an instrument representing a unit of energy savings that has been measured and verified" (Friedman, Bird, and Barbose, 2008 program, which includes having a measurement and evaluation system to ensure real, measurable, verifiable, and additional energy savings.…”