I recently installed a Neurio whole house energy monitor. Let's use it to see if we should replace some incandescent lights with leds. Neurio has a web interface and a mobile app that you can use to look at real-time and historic energy usage. Here are the lights in our living room. One light, seen in the lower right, was burnt out when we moved into the house earlier this year. To measure the consumption of the lights I got a baseline on the mobile app with the lights turned off, and then turned them on, 1,132 watts - 826 watts = 306 watts 306 watts / 5 lights = 61.2 watts per light This matches pretty closely with the 65 watt consumption label on one of the lights I checked. Neurio also provides the cost per hour of your current energy consumption, based on the electric rate that you enter when configuring your account. From the two energy graphs you can calculate that it costs $0.05/hr to run the lights in our livi...