Backed Breakthrough Energy startup using liquid tin to store solar and wind energy as industrial heat
Breakthrough Energy backed a thermal storage startup using liquid tin — heated to over 1,400°C by excess solar and wind electricity — to store energy and deliver it as industrial-process heat. Liquid tin thermal storage offers significantly higher energy density than molten salt systems, requires no exotic materials, and operates at temperatures sufficient to replace fossil fuel combustion in the most energy-intensive manufacturing processes. The investment reflected Breakthrough Energy's strategy of diversifying across multiple thermal storage technologies to find the most cost-effective solutions for different industrial applications.
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Related Accomplishments
March 2025
Breakthrough Energy Ventures Invests in Savor — Butter Made Directly from Carbon
Breakthrough Energy Ventures backed Savor, a startup that produces butter using carbon dioxide and hydrogen — derived from atmospheric carbon and water — without any conventional agriculture, animals, or farmland. Savor's thermochemical process generates saturated fat with an identical molecular profile to dairy butter while using an estimated 99.9 percent less water and zero agricultural land. The product launched at Michelin-starred restaurants in 2025, with supermarket availability targeted for 2027, as part of Gates's broader bet on food-system decarbonisation.
2024
Breakthrough Energy Catalyst Invests $40 Million in Deep Sky Carbon Removal
Breakthrough Energy Catalyst — Gates's industrial decarbonisation investment vehicle — committed $40 million to Deep Sky, a Quebec-based company developing commercial direct air capture facilities across Canada. The investment marked Catalyst's first in the DAC sector. Deep Sky's Alpha facility in Alberta is designed as a testing ground for multiple next-generation carbon removal technologies, with the goal of proving the cost trajectory needed to make DAC viable at planetary scale.
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