You can estimate energy and cost savings for energy-efficient products using the interactive calculators and Excel spreadsheets provided at the website of the US Department of Energy’s Office of Energy Efficiency and Renewable Energy. Here’s the website: energy.gov/eere/femp/energy-and-cost-savings-calculators-energy-efficient-products.
Energy Star–qualified appliances and products are normally of better quality and use less energy than standard products of the same type. Since they use less energy, Energy Star–qualified products save you money on your utility bills while helping to protect the environment by causing fewer harmful greenhouse gas emissions. The website cited below provides access to calculators that can estimate the annual dollar and energy savings you can expect if you install an Energy Star appliance in your home. Here’s the link to this useful website: www.sba.gov/content/energy-saving-calculators-energy-star.
Heating and cooling can account for more than half of your home’s total utility bill. When looking for ways to cut your energy costs, be sure to think about high-efficiency systems. High-efficiency systems are easily identified by checking the yellow and black energy guide label found on the back of the equipment. At this site, you’ll find a useful cost-saving calculator provided by a reputable manufacturer:
www.lennox.com/resources/energycalculator.asp.
A very up-to-date energy cost savings calculator was recently created by the Lawrence Berkeley National Laboratory of the Environmental Energy Technologies Division of the US Department of Energy. The website’s testimonials report that this service has saved homeowners thousands of dollars a year. It also provides updated information on “Energy Efficiency Tax Credits”: www.homeenergysaver.lbl.gov/consumer/.
Of course, there are no guarantees, but I’m confident that the time you spend analyzing the advantages of converting to energy-efficient appliances and converting from incandescent to LED lighting, as well as the time you spend calculating the huge savings that should result from installing a PV solar rooftop system, will be very beneficial to you.