Top 33 Energy-efficient Airplane startups

Updated: Jan 25, 2026
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These startups develop innovative aircraft designs, propulsion systems, lightweight materials, jet fuels and aerodynamic technologies, aiming to create sustainable air transportation.
1
Airbility
Country: South Korea | Funding: ₩2.5B
Airability develops and manufactures heavy-lift eVTOL and light vertical takeoff and landing aircraft powered by (SAF and Hydrogen) fuel-cell electric motors. Their AB-U60 eVTOL (with a 60 kg payload capacity) has already completed its first test flights. It features a four-system tilting electric fan in a shroud, which more than doubles the cruising speed compared to conventional open rotors. This EDF system can change direction, supporting the aircraft's load vertically during vertical takeoff and landing and generating horizontal thrust for fixed-wing flight with a 3-meter span in cruise mode. The AIRBILITY AB-M1300 electric aircraft, which also uses a tilt-rotor system, is still in development. It will be capable of carrying up to 250 kg over a range of 400 km and reach a top speed of 400 km/h.
2
Boom Supersonic
Country: USA | Funding: $732.5M
Boom Supersonic manufactures supersonic passenger jets and turbines for ground-based power plants. The company's core technology is the turbofan engine, originally designed for supersonic flight. The XB-1 demonstrator aircraft, powered by this engine, became the first civilian aircraft to break the sound barrier. It also served as the basis for the Superpower stationary 42-MW power plant. Boom supplies these turbines with generators, control systems and performs preventive maintenance. The turbines achieve 39% efficiency, which is comparable to competitors. However, Boom is also developing a "field upgrade" to convert its turbines from a simple cycle to a combined cycle, which can recover heat from exhaust gases to increase efficiency above 60%. A key advantage is that Superpower turbogenerators are shipped in a compact shipping container. The company has a contract with Crusoe, an AI infrastructure leader, to supply 29 turbines for AI data centers.
3
Archer
Country: USA | Funding: $3.5B
Archer is an aerospace company that developed an electric vertical takeoff and landing aircraft tailored for urban air mobility systems.
4
Joby Aviation
Country: USA | Funding: $3B
Joby Aviation develops a new generation of electric personal aircraft created to revolutionize personal mobility.
5
Beta Technologies
Country: USA | Funding: $1.8B
Beta Technologies manufactures electric vertical takeoff, landing eVTOL aircraft, and recharging pad systems.
6
Volocopter
Country: Germany | Funding: $780.6M
Volocopter is an urban air mobility company that develops eco-friendly air taxis to transport people.
7
Vertical Aerospace
Country: UK | Funding: $595.1M
Vertical Aerospace builds technology to revolutionize how people fly, by making air travel personal, on-demand, and carbon-free.
8
Wisk Aero
Country: USA | Funding: $450M
Wisk is an urban air-mobility company on a mission to leave traffic on the ground and make sustainable flight a reality for everyday life.
9
ZeroAvia
Country: USA | Funding: $306M
ZeroAvia enables zero emission air travel at scale, starting with 500 mile short-haul trips, at half of today’s cost.
10
Fulcrum Bioenergy
Country: USA | Funding: $281.2M
Fulcrum Bioenergy converts household garbage into low-carbon transportation fuels, including jet fuel, diesel, and ethanol.
11
LanzaJet
Country: USA | Funding: $277.5M
LanzaTech develops renewable jet fuel
12
Heart Aerospace
Country: Sweden | Funding: $147.2M
Heart Aerospace is a Swedish startup making electric regional airplanes.
13
Reliable Robotics
Country: USA | Funding: $133.5M
Reliable Robotics is bringing remote piloting to small cargo planes
14
Wingcopter
Country: Germany | Funding: $119.6M
Wingcopter is a manufacturer of unmanned eVTOL fixed-wing aircraft dedicated to improving the lives of people worldwide.
15
AirCo
Country: USA | Funding: $108.1M
Air Company is a carbon utilization company creating consumer and industrial products from carbon dioxide (CO2).
16
Air Company
Country: USA | Funding: $108.1M
Air Company turns carbon dioxide into things like perfume, vodka, hand sanitizer and ethanol-based aviation fuel
17
Pyka
Country: USA | Funding: $88.1M
Pyka makes technologies that make aviation safer, more affordable, and more accessible than has ever been possible in human history.
18
Urban Aeronautics
Country: Israel | Funding: $50M
Urban Aeronautics develops advanced aerodynamic technologies that are the basis for an entirely new family of internal rotor (ducted fan) aircraft known as Fancraft
19
Dimensional Energy
Country: USA | Funding: $48.7M
Dimensional Energy transforms carbon dioxide into sustainable aviation fuel (SAF) and valuable consumer products with the lowest energy input per barrel installed.
20
Whisper Aero
Country: USA | Funding: $41M
Whisper Aero is harnessing the power of air more cleanly, efficiently, and quietly than ever before.
21
Skydweller
Country: USA | Funding: $40M
U.S.-Spanish aerospace company developing solar powered aircraft capable of perpetual flight.
22
H3X
Country: USA | Funding: $24.7M
H3X manufactures advanced electric propulsion systems for commercial aviation and other high performance applicaitons.
23
AIR
Country: Israel | Funding: $23M
AIR is an aerospace company that is revolutionizing everyday mobility for everyday people, empowering simplified electric flight operations.
24
Metafuels
Country: Switzerland | Funding: $22M
Powering the future of aviation with sustainable aviation fuel - affordable air travel without the carbon footprint
25
Beyond Aero
Country: France | Funding: $20M
Beyond Aero is developing a zero-emission private aircraft powered by hydrogen-electric propulsion.
26
ePlane
Country: India | Funding: $14M
Eplane builds and develops electric air transportation systems.
27
Elysian Aircraft
Country: Netherlands | Funding: $10M
Elysian Aircraft is a Dutch aviation startup working on a 90-passenger battery-electric plane.
28
FeTu
Country: UK
FeTu specialises in reducing energy consumption and emissions through its self-developed two-stage turbine technology, which applications in the energy market and manufacturing industries including aerospace and marine.
29
Spark e-Fuels
Country: Germany | Funding: €2.6M
Spark e-Fuels is a supplier of co2-neutral aviation fuel that is designed to be carbon-neutral.
30
Alakai Technologies
Country: USA
Alaka'i develops helicopter-style electric craft called Skai that is using hydrogen fuel cells to produce electricity.
31
Traverse Aero
Country: USA
Fast and efficient logistics. Delivering entire pallet-loads via fully autonomous cargo drones.
32
Luftcar
Country: USA
Luftcar is an aviation company that develops self-driving air and land vehicles that can travel farther distances while consuming less fuel.
33
Odonata
Country: German
ODONATA creates Hydrogen Electrical Vertical Take-Off and Landing vehicle Designed to reach high ranges and payload while allowing CO2 free operations
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Alexander Gillet
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com