Energy use intensity

Energy use intensity is a measure of how much energy we use in relation to how much stuff we use. It's like we're measuring how much energy it takes to do something. For example, let's say you want to make a cake. You need to use energy to heat the oven and mix the ingredients, so the energy use intensity would measure how much energy it takes to make one cake, compared to how much stuff it took you to make it. The less energy it takes to make one cake, the lower the energy use intensity will be.