Mike Brady of ORNL's Materials Science and Technology Division led a team that identified a family of low-cost iron-based alloys with the potential to meet Envirofit's design targets. ORNL also assisted Envirofit in specifying alloy compositional tolerances needed to achieve durability targets without significantly increasing alloy cost. Other ORNL team members include MSTD’s Thomas Rosseel and Larry Walker (retired), Energy and Transportation Science Division’s Tim Theiss and David Stinton (retired), and Tech Transfer’s Joe Marasco, Alex DeTrana, and Frank Damiano.
To date, more than 150,000 Envirofit G-3300 stoves have been sold in the developing world. These stoves reduce smoke and harmful gases by up to 80 percent, reduce fuel use by up to 60 percent, and reduce cooking time by up to 50 percent compared with traditional cooking fires and stoves. The core technology developed for the G-3300 has now been integrated across six models of wood and charcoal stoves.