Donating a Compact Biogas System (CBS) truly is the gift that keeps on giving. Whether it be for a household system for a family or an institutional system for an inner city school or an orphan home, the CBS has a lifespan of 25 years continuously producing a hot, clean flame. The only input is water and food waste. The cost savings to a family or institution is enormous. The money saved can be invested in health, education and improving peoples lives.