... GTZ and SNV; and local NGOs such as Centre for Environment, Energy and Sustainable Development (CEESD) and Kumasi Institute of Technology, Energy and Environment (KITE); • Develop training programmes ... of tandem digesters as used by biogas service providers as opposed to the recommended layout. Figure 13. (A) Tandem digester layout used by BTWAL, BCEL, and BCL, and (B) Appropriate and ... (CWSA), Energy Commission, and Metropolitan, Municipal and District Assemblies; biogas service providers; research institutions such as the Institute of Industrial Research and The Energy Centre...