Most of us know that replacing an old incandescent lightbulb with new LED lighting saves energy and money. To mitigate climate change, energy efficiency should be the first choice since it’s cheap and easy compared with other options. Implementing a combination of energy efficiency measures, at home and work, might yield potential electricity savings of 10.2% by 2035. Most current programs and policies for energy efficiency can provide significant energy savings at a cost lower than the retail rate we pay for electricity. So if you invest in efficiency, you’ll be able to get your money back and simultaneously help save the planet.