Bill Gates’ Breakthrough Energy bets these 21 startups will shape energy’s future

The cost to electrify global economies and cool AI data centers could fall significantly.

Bill Gates’ Breakthrough Energy has revealed its sixth cohort of 21 startups supported through its Fellows program. These companies are focused on addressing the projected surge in global electricity demand, anticipated to triple as economies electrify to combat climate change. The initiative backs a diverse range of technologies, from agricultural innovations and critical mineral extraction to advancements in nuclear fusion and data center efficiency. Notable ventures include Borealis Fusion, exploring proton-boron fusion for lower energy costs, and StarWarden, developing heat management for fusion reactors. Startups like Bedrock Semiconductor, K1 Semiconductor, and Vari Flux are working on more efficient semiconductors and data center power. Other focus areas include molecular sensing for crop disease detection, robotics for ocean floor mineral harvesting, and hydrogen transport solutions using ammonia, with companies like AmyHyTech and Ammovolt Energy. This year's cohort also includes a segment dedicated to climate adaptation strategies, acknowledging the increasing need to prepare for a warmer planet.

The increasing focus on electrification and AI demands a massive expansion of electricity generation and distribution, presenting a "coming massive increase in demand for electricity." Breakthrough Energy's investment strategy reflects a dual approach: investing in breakthrough decarbonization technologies while also acknowledging the need for adaptation solutions as the effects of climate change become more pronounced. This diversified investment signals a maturing understanding within the venture capital space that "electrifying everything" requires not just clean energy sources but also enhanced infrastructure, more efficient hardware, and strategies to manage the immediate impacts of a warming climate.

The emphasis on startups like K1 Semiconductor and Vari Flux, aiming to reduce power electronics costs by up to 50%, and Borealis Fusion, pursuing a lower-cost fusion energy path, indicates a significant market opportunity in making these future energy demands economically viable. The support for hydrogen-ammonia solutions and novel mineral extraction further highlights the broad spectrum of innovations needed to support a low-carbon, high-demand future. These investments suggest that the energy transition will rely on a combination of radical technological leaps and incremental efficiency gains across multiple sectors, from agriculture to computing, with a growing recognition that adaptation will be as critical as mitigation.