appropriate technology / greenhouse gas emissions / unsustainable and dirty energy production / main energy supply / sustainable and equitable energy economy / benign renewable energy options / co-generation systems / renewable energy research / sustainable energy economy / mining / transportation / energy efficiency / sustainable energy economies / greater national and regional energy self reliance / equitable and decentralised energy economy / renewable and finite energy sources / renewable energy generation / owned renewable energy industry / energy taxes / energy / tradeable greenhouse gas emission rights / /