Allow us to drop some knowledge on you to save you money, and we don’t mean just a few bucks. Which one of your electronics or appliances guzzles up the most energy? Can you really save a couple Benjamins by lowering your thermostat a few degrees at night? You’ll never know the answers unless you take the Consumer Reports energy quiz. We dare you to learn something new about energy, save some money, and ultimately, save the planet.