The Benefits of Energy Efficient Glass Having a “green” home is important to both home owners, and prospective home buyers. Lowering energy costs not only save you money, but also is good for the environment. Home owners are doing many smart things to save on energy like: energy star appliances, turning off heating and air conditioning at peak times, and unplugging chargers or other electronic devices when not in use. While all these things are great to save energy, there is still about 30% of your energy just flying out of your home. You could do something drastic, like living.