Understand how you use energy and where you can save with our tools and calculators.
Compare the costs of heating your home with four different energy sources.
Compare heating costs for your home – natural gas, oil, propane and electric heat.
Calculate your savings: compare the fuel costs of high-efficiency and standard efficiency heating systems.
Calculate your savings: compare the fuel costs of high-efficiency and standard efficiency water heaters.
See how upgrading to an energy-efficient heat pump can save you money.
Estimate the energy costs of operating virtually any appliance in your home.
Compare energy costs of different TVs – plasma, LCD, DLP and tube.
Discover how compact fluorescent lamps (CFLs) can save you money.
Estimate how much you can save by adjusting your thermostat.