Before You Begin...
This calculator provides an estimate of the money that can be saved and the carbon dioxide (CO2) emissions that can be prevented through some simple energy-saving activities. It relies on national average energy costs as the default. Users who prefer to replace these figures with their actual household energy data will get a more accurate picture of the savings that can be achieved.
In either case, please keep in mind that savings figures are quite approximate. Actual savings will vary widely with household energy habits.
Finding Household Energy Costs
If your children/students would like to enter actual energy data, help them gather their household's electric and natural gas bills to find these three inputs:
A Note on the CO2 Figures
CO2 emissions are included in this calculator because CO2 is a main contributor to global warming. The United States Environmental Protection Agency estimates that an average household of two people in the U.S. is responsible for about 41,500 pounds of CO2 emissions per year, and about 27,000 pounds of this is due to natural gas and electricity use. Using energy more efficiently can go a long way toward helping to reduce CO2 emissions and slow the rate of global warming.