I found this interesting..... a family could depending on price save a whack of money over the term...
http://www.atlasenergytech.com/Pages/HomeandRuralBiofuelSystems.aspx
Methane Production Module 1:
Atlas is unfolding a home unit designed for use in rural settings or subdivisions for personal use. This home unit can provide all of the energy that is required to run an average household. The system will connect to the existing septic tank, a newly installed septic system or to the sewer line leaving the home. Material removed from the septic system goes through an Atlas Energy Technologies, Inc. Anerobic Digester and much of the waste material is converted into methane gas.
The average digestion rate is approximately 60% of the Total Volatile Solids (organic content) and are converted into methane gas. For every pound of digested TVS 25cuft of biogas is produced. the biogas will contain approximately 600 Btu per cu ft of gas.
http://www.atlasenergytech.com/Pages/HomeandRuralBiofuelSystems.aspx
Methane Production Module 1:
Atlas is unfolding a home unit designed for use in rural settings or subdivisions for personal use. This home unit can provide all of the energy that is required to run an average household. The system will connect to the existing septic tank, a newly installed septic system or to the sewer line leaving the home. Material removed from the septic system goes through an Atlas Energy Technologies, Inc. Anerobic Digester and much of the waste material is converted into methane gas.
The average digestion rate is approximately 60% of the Total Volatile Solids (organic content) and are converted into methane gas. For every pound of digested TVS 25cuft of biogas is produced. the biogas will contain approximately 600 Btu per cu ft of gas.