A first step to reducing energy costs in any green home is insulation and not just any insulation but green insulation. There are many types out there such as recycled paper insulation, HempFlax insulation, Concrete's Blond-a false wall for hard to insulate areas, recycled denim insulation and Icynene, Thermocell, and Heatlok-Soya which are spray type green insulations. Make your green building more green with green home improvements such as green insulation.