What is the difference between site energy and source energy?
Source energy is a measure that accounts for the energy consumed on site in addition to the energy consumed during generation and transmission in supplying the energy to your site. Source energy is much more important than site energy if the concern is environmental performance. Site energy is useful because it can be unambiguously measured.
What is site energy?
You’re probably already familiar with site energy, which is the amount of heat and electricity consumed by a building as reflected in your utility bills. Looking at site energy can help you understand how the energy use for an individual building has changed over time.
Why is site energy important?
Looking at site energy can help you understand how the energy use for an individual building has changed over time. Site energy may be delivered to a building in one of two forms: primary or secondary energy. Primary energy is the raw fuel that is burned to create heat and electricity, such as natural gas or fuel oil used in onsite generation.
What is a site energy score?
By taking all energy use into account, the score provides a complete assessment of energy efficiency in a building. You’re probably already familiar with site energy, which is the amount of heat and electricity consumed by a building as reflected in your utility bills.
What is a site energy measurement?
For buildings that purchase raw fuel (such as natural gas) and convert it to power on-site, a site energy measurement would account for the losses that occur during this conversion, because site energy is based on the fuel that is purchased.
Why is source energy more important than site energy?
Source energy is much more important than site energy if the concern is environmental performance. Site energy is useful because it can be unambiguously measured. Converting to source energy has a major effect on electricity (factor of 3), and has a small effect for fossil fuels like natural gas. So what difference does this make?
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