Tempo, a thermochemical energy storage company, has been named on Cleantech Group’s 2025 Global Cleantech 100. This annual list, now in its 16th year, showcases the most promising cleantech companies making significant contributions to sustainable innovation. The complimentary report introduces the innovators advancing groundbreaking technologies and business models to solve energy and environmental problems.

Tempo supports industrial decarbonization and long-duration on grid-scale storage via thermochemical energy storage – a new class of energy storage. These systems have higher energy density than lithium-ion, making electricity cost-competitive with natural gas in the industrial heat space, a sector that accounts for approximately 30% of global GHG emissions.

“2025 will be remembered as a transformative year for cleantech. The bar has gone up for what kind of level of potential novelty, uniqueness, and cost improvements might be attractive,” said Richard Youngman, CEO of Cleantech Group. “The Global Cleantech 100 highlights innovators who are building the foundation for a sustainable and economically viable future.”

“Es un honor recibir un reconocimiento tan prestigioso por parte de Cleantech Group debido a nuestro compromiso con el desarrollo de soluciones de almacenamiento de energía rentables —dijo Pasquale Romano, director ejecutivo de Tempo—. No se trata solo del clima. Debemos llevar al mercado soluciones que sean confiables, libres de emisiones y asequibles.”

Featured companies will be recognized at the Cleantech Forum North America, taking place January 27-29 in San Diego, CA. This event offers participants the opportunity to connect with many of the innovators on the list, along with many other rising stars.  The Forum will showcase the latest trends, groundbreaking technologies, and foster collaboration within the clean tech community.

Acerca de Tempo

Located in San Diego, Tempo is pioneering a new class of low-cost thermochemical energy storage systems (TCES) designed to accelerate industrial decarbonization and address long duration energy storage needs for the grid. The company’s TCES units store energy both chemically and as heat at very high temperatures that can be discharged continuously or as needed directly into industrial processes or as an energy source for electricity generation. The system can be fast charged when electricity prices are low or during surplus renewables generation and discharged as needed. Tempo is backed by Prelude Ventures, Khosla Ventures, Breakthrough Energy Ventures, Imperative Ventures, and New System Ventures.

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