Today half the world’s population relies on biomass for their cooking needs. The biomass stoves or fires they cook on produce toxic fumes that kill almost 2 million people a year. These fires also consume over twice the necessary fuel and contribute to global warming and deforestation. Prakti Design is a for-profit company that designs and disseminates fuel-efficient, clean-burning cookstoves for the base of the pyramid. We advocate a human-centered design tailored to regional cooking practices and received good feedback to date. The whole community is impacted with a wide range of stoves, micro-financing schemes, and distribution -both by existing networks and trained salespersons- promoting local economic development. Following successful pilots that have improved the lives of 25,000 people in South India and Nepal, Prakti plans its first full-commercial distribution to roll-out from this July in India.