Biogas is known as an environmentally-friendly energy source because it alleviates major environmental problems simultaneously. By converting organic waste into energy, biogas is utilizing nature’s elegant tendency to recycle substance into productive resources. Biogas plant not only provides gas for cooking purpose but also produces organic fertilizer for the crops and fish pond. Moreover, the plant helps to reduce the use of biomass fuel for cooking. With the technical support of IDCOL SDRS installed more than 250 plants of different sizes all over Bangladesh.