Collect energy use data from monthly utility bills for an entire year for a building. If different fuels such as natural gas are used, keep those data separate. Collect average outdoor monthly...

Collect energy use data from monthly utility bills for an entire year for a building. If different fuels such as natural gas are used, keep those data separate. Collect average outdoor monthly temperatures for that year. Plot average monthly temperatures on the X-axis and monthly energy use on the Y-axis. Write down your observations about the energy use and how each is affected by the outdoor temperatures. Convert all energy uses into the same units (kWh or kBtu), sum up for the entire year, and divide by floor area to calculate the annual EUI