AI-rewritten: This is a summary of an article from MIT Technology Review, rewritten by AI (Qwen, running locally) to make it easier to read. The facts come from the original article – read it for the full story.

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The MIT Technology Review team releases an annual list of promising climate tech companies globally. This year marks the fourth edition of their selection process. The businesses featured range from early-stage startups to multinational corporations. They are developing technologies designed to address climate change or help adapt to a warming world.

There is an urgent need for these innovators. Experts state that we must drastically reduce emissions to avoid the deadliest impacts of climate change. At the same time, society must contend with the harmful effects already occurring. The goal is to highlight global progress and the breadth of solutions required.

The 2026 list includes companies working on diverse technologies. Examples include energy storage powered by carbon dioxide, cleaner methods for making cement, and ways to refine critical minerals. These efforts aim to address acute challenges facing the world today.