Greentown Labs Member Milestones — October 2023

Our impressive group of 200+ startups is always hard at work scaling its climatetech solutions! Check out their latest accomplishments below.

Interested in engaging with or joining our community of climatetech startups? Learn about how you can take action with our members or apply for startup membership!


  • Eden closed a $12M seed funding round that was upsized and oversubscribed for its Electrical Reservoir Stimulation technology, which it will deploy across geothermal, geologic hydrogen, and sustainable mining applications.
  • Overstory raised a $14M Series A round led by B Capital and joined by The Nature Conservancy.
  • Osmoses raised an $11M seed funding round to bring its molecule-scale membranes to the hydrogen market.
  • Latitude Media (formerly known as Post Script Media) raised $4M for its climate newsroom expansion.
  • Salient Predictions, a Greentown alum, received a $2.9M grant from the Bill & Melinda Gates Foundation to support smallholder farmers in East Africa through a collaboration with in-region technology and weather partners.
  • GigaDAC won $272K+ for its novel approach for achieving scale in direct-air carbon capture from the National Science Foundation.
  • Syzygy Plasmonics and Greentown partner Mitsubishi Heavy Industries signed an investment agreement.