Skip to ContentThe new edition of our annual list features startups and established businesses working to decarbonize transportation, heavy industry, energy, and more.September 29, 2025Stephanie Arnett/MIT Technology Review | Getty Images, Adobe Stock The need to cut emissions and adapt to our warming world is growing more urgent. This year, we’ve seen temperatures reach record highs, as they have nearly every year for the last decade. Climate-fueled natural disasters are affecting communities around the world, costing billions of dollars. That’s why, for the past two years, MIT Technology Review has curated a list of companies with the potential to make a meaningful difference in addressing climate change (you can revisit the 2024 list here). We’re excited to share that we’ll publish our third edition of Climate Tech Companies to Watch on October 6. The list features businesses from around the world that are building technologies to reduce emissions or address the impacts of climate change. They represent advances across a wide range of industries, from agriculture and transportation to energy and critical minerals. One notable difference about this year’s list is that we’ve focused on fewer firms—we’ll highlight 10 instead of the 15 we’ve recognized in previous years.