This years winners include SELCO,BIOTECH, SKG Sangha from India. SELCO showed the way for diffusion of solar lamps with a sustainable commercial model with over 70,000 installations, mostly by street vendors. BIOTECH showed the way to use food waste thrown into the streets for producing cooking gas, with an installation base of 12,000 domestic plants. SKG Sangha demonstrated utility of bio gas plant slurry as fertiliser by combining the slurry with straw and leaves and then adding worms which re-digest the mixture to produce vermicompost.
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