Hydrogen Energy Startups funded by Y Combinator (YC) 2026

HyLight builds and operates autonomous airships for long range monitoring. We focus on detecting methane leaks on pipelines and defects on power lines. Our innovation, the HyLighter, is a crossover between drone and airship technology. Like a drone, it is easily controllable and transportable. And, like an airship, it is extremely energy-efficient, enabling it to fly for up to 10 hours at slow speed (22mph) for optimal data collection which represents a range of 220miles. Today, energy infrastructure operators struggle with conducting inspections that are simultaneously: massive and precise. HyLight offers a solution to precisely detect issues on the infrastructure at an industrial scale, and all of this without emitting GHGs. We are 3 co-founders experienced in hardware and energy companies with Masters in Mechanical Engineering, Computer Science and Business from the best Engineering and Business School in France. We have developed 5 different flying aircrafts and signed 5 pilots programs with major energy infrastructure operators. We also have LOIs worth over $3.5M.

Our planes fly 10 times further than battery electric alternatives, with a lower operating cost than fossil fuel powered aircraft. Our first product is a 15 seat aircraft with a range of 800 km that enters service in 2026 with launch customer Skytrans. Our team has over 85 years of aerospace experience and have developed, flight tested and certified aircraft at Google X, magniX, Heart Aerospace, Ampaire, Airbus, Boeing, Bombardier and Gulfstream. We have $145M in aircraft LOIs from 7 airlines in the US, Europe and Australia.

Beyond Aero is building the first electric business aircraft powered by hydrogen propulsion, enabling six passengers to fly up to 800 NM (1,500 km), a range unattainable with battery-electric aircraft. Founded in December 2020, the company is redesigning the architecture of an aircraft around hydrogen-electric propulsion, focusing on fuel cell technology, gaseous hydrogen tank integration, and advanced cooling systems. With offices in Toulouse, Paris, and Los Angeles, the company boasts a team of over 80 highly qualified engineers from leading aerospace companies. Beyond Aero has secured over $50 million in funding, backed by investors such as Giant Ventures, Bpifrance, and prior supporters like Initialized Capital, Female Founders Fund, and 7 Percent Ventures. Beyond Aero also completed Y Combinator in 2022. The company has secured $1.5bn in Letters of Intent (LOIs), completed France’s first manned, fully hydrogen-electric flight, and acquired Universal Hydrogen Co.'s assets, IP, and flight data. Beyond Aero is a member of the World Economic Forum’s First Movers Coalition and the Alliance for Zero Emission Aviation, underscoring its commitment to electrifying aviation with hydrogen propulsion.