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Source energy does not mean energy generated at the building. Rather, it is the total amount of energy generated upstream (at power plants, etc.) to produce the energy consumed by the building. See, for example, https://www.energystar.gov/buildings/facility-owners-and-managers/existing-buildings/use-portfolio-manager/understand-metrics/difference for more information.

Source energy does not mean energy generated at the building. Rather, it is the total amount of energy generated consumed upstream (at power plants, etc.) to produce the energy consumed used on site by the building. See, for example, https://www.energystar.gov/buildings/facility-owners-and-managers/existing-buildings/use-portfolio-manager/understand-metrics/difference for more information.