In the following list, the higher the level, the more cost effective the choices are for reducing energy use in your house/business. So, ideally, one should exhaust the possibilities at the highest level before implementing lower level actions.
PAYBACK IN YEARS and ACTION
0: Get a free energy audit (Cape Light Compact: 800-797-6699), lower house thermostat setting, combine/minimize automobile trips, replace lawn area with garden or natural landscape.
½ - 2: Solar Pool Heat Installation.
1-5: Add Attic Insulation; Replace Light Bulbs & Appliances with more energy efficient ones.
3-7: Solar Domestic Hot Water Installation using tax credits.
3-8: Add Window Quilts or Thermal Shades; Install a Wood/Pellet Stove.
5-7: Groundwater Source Cooling/Dehumidifying.
6-8: Wind Power and/or Photovoltaic Solar Installation using MTC (Massachusetts Technology Collaborative) incentive money and tax credits.
6-10: Replace Heating Equipment/Automobile with updated, more efficient technology.
10-15: Reside Building with added insulation & new windows.
15-20: Install Solar Space Heating
 
 
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