Airventions*: (Airport Collision Avoidance Inventions) - 2011 MassChallenge Finalist

Altaeros Energies: (Low-Cost Airborne Wind Turbine System) - 2010 MassChallenge Finalist, Renewables Track Finalist - 2010 MIT Clean Energy Prize, selected for 2011 ARPA-E Technology Innovation Showcase

AMPL Energy: (Solar Management Technology Innovation)

BICEP: (Boston Institute for Clean Energy Prototyping)

Coincident: (Residential & Commercial Energy Management Systems) - U.S. Department of Energy 2010 SBIR Phase I Grant Award Winner. U.S. Department of Energy 2010 SBIR Phase II Grant Award Winner.

Dynamo Micropower: (Microturbine Power Systems) - U-Launch 2011 Incubation Award, Winner - Global Startup , 2011 National Science Fondation SBIR Phase I Grant Award Winner

Fusion Research Technologies: (Mainstream & Industrial Applications for Nuclear Fusion)

Jordan Stephens: (Various R&D Projects) - Sustainable energy engineering. Company formation pending.

Keystone Tower Systems: (Wind Turbine Tower Innovation) - 2011 Department of Energy SBIR Phase I Grant Award Winner

OsComp Systems: (Natural Gas Compression Technology) - 2010 MassChallenge Winner, 2010 Harvard Business School Competition Winner, Non-Renewables Track Winner - 2010 MIT Clean Energy Prize, ConocoPhilips 2010 Energy Prize Finalist, 1st Place - WPI Business Plan Competition, 1st Place - Intel + UC Berkeley Technology Entrepreneurship Challenge

Promethean Power: (Solar Refrigeration Technology for Indian Dairy Industry) - 2011 National Science Foundation SBIR Phase I Grant Award Winner, 2010 GE Ecomagination Grant Winner, 2007 MIT $100K Runner-Up

SolSolution: (Solar Energy Services and Educational Funding for Schools) - 2010 MassChallenge Finalist

Trillium Brewing*: (Experimental Brewing Laboratory)

* Non-cleantech

Previous Residents

Arista Solutions: (Cleantech Prototyping and Materials Science R&D)

Green Trade Association: (Green Employer and Workforce Development Service Provider)