US Electricity Generation Fuel Mix Profile Options: The direct
use of natural gas at the point-of-use (home or business) can displace the use of
electricity, which is generated using a mix of generation fuels. Users of this tool
have the option of selecting "eGRID US Average All Sources 2007" to compare the
greenhouse gas (GHG) impact of displacing electricity generated using the actual
mix of all fuel-types. Or users may select "eGRID US Fossil 2007" to compare the
greenhouse gas (GHG) impact of displacing only electricity generated using a mix
of fossil fuels.
An argument can be made that the use of energy sources such as natural gas at the
point-of-use only displaces electricity generated by fossil fuels. This theory concludes
that any reduction in the use of electricity caused by displacement would only impact
fossil-fuel generated power as non-fossil fuels (wind, solar, nuclear and hydro)
would be the last sources removed from the generation mix when electricity use is
displaced by the direct use of natural gas.