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Individual EPA Laboratories' Net Energy Intensity Impacts for FY 2008
(Nets out green power purchases.)
This chart describes the impact of green power purchases, energy conservation projects, and recommissioning on individual EPA facilities’ net energy intensity in British thermal units per gross square foot (Btu/GSF) during FY 2008. No EPA laboratory is excluded from consideration for energy upgrades or green power purchases, regardless of size. Energy-intensive laboratories are another focus of EPA's energy conservation efforts. When large laboratories are also energy-intensive, significant opportunities for energy conservation exist.
1 For each laboratory, the yellow portion of the bar represents the reported energy consumption after energy savings from completed recommissioning projects and mechanical system upgrades are deducted and green power purchases are netted out.
2 Previously, to help stimulate the green power market, the U.S. Department of Energy (DOE) allowed federal agencies to subtract, or “net out,” their purchases of renewable energy from agencywide total energy consumption to meet mandated energy reduction requirements. Between FY 2008 and FY 2012, DOE will gradually phase out this practice. In FY 2008, through a combination of facility-specific green power contracts and a large “blanket” contract, EPA continued to purchase green power equivalent to 100 percent of its annual electricity use. In this chart, the green component of the Btu/GSF bar for each facility represents green power contracts specific to that facility. The green portion of the Agencywide bar represents the sum of these individual contracts, as well as the portion of the FY 2008 blanket green power contract that EPA attributed to its reporting laboratories.
3 Energy measured at the point of use is termed “site energy.” The energy metric that accounts for the generation, transmission, and distribution of the energy is called “source energy.” In FY 2008, DOE credited federal agencies for implementing life-cycle cost-effective projects in which source energy decreases–even if site energy use increases–by netting out the source energy savings from the agency site energy use before the final calculation of goal performance in Btu/GSF.
Date: October 13, 2009