Enabling flight without the use of fossil fuels wouldn’t be possible if it wasn’t for companies making the many components required for this. While it tends to be the aircraft manufacturers that get most of the credit and media attention, a lot of the biggest innovations come from suppliers. You can think of electric power storage and distribution systems, electric motors, hydrogen fuel cell systems, hydrogen storage solutions and more. The providers listed here specifically develop products for energy storage, distribution and propulsion.


Image credit: Ampaire promotional video
Primary location: Hawthorne, California, United States
Website: ampaire.com

Ampaire develops hybrid-electric powertrains for aviation use. The focus to date has been on experimental conversions of existing aircraft. Pictured here is the Ampaire EEL technology demonstrator which is a converted Cessna 337 Skymaster using one conventional piston engine and one electric motor.

Astron Aerospace

Image credit: Astron Aerospace promotional video
Primary location: Derby, Kansas, United States
Website: astronaerospace.com

Astron Aerospace is developing a hydrogen-powered rotary engine primarily but not exclusively for aviation use. The engine being developed today is dubbed the Omega 1 and Astron Aerospace claims a single 16kg / 35lbs engine can produce around 160hp. This would give it about the same power as the popular Lycoming O-320 series of piston engines commonly found on small single engine aircraft, but at a fraction of the weight. The engine can also be connected to additional engines of the same type to produce more power.

Axter Aerospace

Image credit: Axter Aerospace promotional video
Primary location: Madrid, Spain
Website: axteraerospace.com

Axter Aerospace designs electric and hybrid propulsion systems for aviation use. The hybrid system is also pitched as a safety feature; in case the combustion engine fails the electric system can provide sufficient power to safely get the aircraft to a suitable landing site. They also build batteries, battery control systems and other control units.


Image credit: Northvolt press release
Primary location: San Leandro, California, United States
Website: cuberg.net

Cuberg develops lithium metal batteries with electric aviation as a key user in mind. Founded in 2015, the company has been owned by Swedish battery manufacturer Northvolt since 2021.


Image credit: CFM media
Primary location: Paris, France
Website: efesto.fr

Efesto develops specialized parallel hybrid electric powertrain solutions, including systems for light aircraft. Pictured here is a CFM Dardo with a hybrid electric propulsion system with components from Efesto.


Image credit: Wikimedia Commons
Primary location: Gloucestershire Airport, United Kingdom
Website: electro-flight.com

Electroflight is a supplier of battery systems for aviation use. They developed the battery system for the Spirit of Innovation aircraft that set the speed record for electric aircraft and are currently working to develop the battery system for the Heart Aerospace ES-19 regional airliner. Pictured here is an earlier concept for breaking the speed record called the Electroflight P1e.

Electric Power Systems (EPS)

Image credit: PR Daily Wire / EPS
Primary location: North Logan, Utah, United States
Website: https://www.epsenergy.com/

Electric Power Systems (EPS) develops batteries and control systems with a focus on aerospace applications. It currently offers three different modules for sale with different applications in mind for each and can list big names such as Boeing, Embraer and NASA as their customers.


Image credit: Emrax promotional video
Primary location: Kamnik, Slovenia
Website: emrax.com

Emrax develops electric motors and control systems for various uses cases, including aviation. Pictured here is a Pipistrel APIS self-launching glider with an Emrax electric motor in 2013.

Evolito Technology

Image credit: Businesswire / YASA
Primary location: Yarnton, Kidlington, United Kingdom
Website: evolito.aero

Evolite offers electric motors and inverters designed specifically for electric aviation use, be it either fixed wing or VTOL applications. Evolite is a subsidiary of YASA Motors which develops electric motors for automotive use. Their technology was used in the Spirit of Innovation aircraft that set the speed record for electric aircraft and which they partnered on with Rolls-Royce and Electroflight.


Image credit: Honeywell press release
Primary location: Charlotte, North Carolina, United States
Website: honeywell.com

Besides offering a wide variety of electronic systems used in a wide variety of aircraft, Honeywell also offers 500kW and 1MW hybrid-electric systems, building upon their experience gained from developing Auxiliary Power Units (APUs). Honeywell is also developing hydrogen fuel-cell technology and currently offers systems that can power small UAVs.


Image credit: Wikimedia Commons
Primary location: Stuttgart, Germany
Website: h2fly.de

H2Fly develops hydrogen fuel-cell technology for aviation use and have already demonstrated their technology in the HY4 demonstrator (pictured). H2Fly has partnered with Deutsche Aircraft who are working to re-introduce the Dornier 328 to build a hydrogen fuel-cell powered version of the aircraft and demonstrate it by 2025. If a hydrogen fuel-cell version of it will actually be offered for sale has not yet been announced. The company was acquired by air taxi developer Joby in 2021 but is still operating as an independent brand.

H3 Dynamics

Image credit: H3 Dynamics / Business Wire
Primary location: Pflugerville, Texas, United States
Website: https://www.h3dynamics.com/

H3 dynamics develops electric powertrains using gaseous or hydrogen fuel cell technology. The system can be used for propulsion in both unmanned drones as well as manned aircraft. H3 dynamics acquired Singapore based HES Energy Systems in 2015.


Image credit: H55 media kit
Primary location: Sion, Switzerland
Website: https://www.h55.ch/

H55 develops electric storage and propulsion solutions specifically for the aviation industry. The Bristell Energic, which aims for certification in 2022, is the first production aircraft to adopt their technology.


Image credit: HyPoint press release
Primary location: Menlo Park, California, United States
Website: hypoint.com

HyPoint develops hydrogen fuel cell systems for aviation use. A specific point HyPoint is attempting improve upon is the weight of hydrogen fuel-cell systems by air-cooling rather than liquid-cooling the system.


Image credit: Boeing Promotional Video
Primary location: Camarillo, California, United States
Website: magicall.biz

MAGicALL is a provider of a wide range of electronics. Their electric motors are specifically pitched for the use in electric VTOL aircraft and drones and can count big names such as Boeing (their Passenger Air Vehicle concept with MAGicALL MAGiDRIVE motors built together with Aurora Flight Sciences pictured here), Airbus and Bell among their customers.


Image credit: MagniX promotional video
Primary location: Everett, Washington, United States
Website: magnix.aero

MagniX develops electric motors and related equipment for aviation use. Their technology is aimed at both new developments as well as retrofits of existing aircraft.


Image credit: newswire.co.kr / MOBIUS.energy press release
Primary location: Tustin, California, United States
Website: mobius.energy

MOBIUS.energy develops batteries primarily for use in electric aviation. They received an investment of 50 million USD in 2021 and created a partnership with Skyworks Aeronautics to power the eGyro they are developing.


Image credit: Wikimedia Commons
Primary location: Ajdovščina, Slovenia
Website: Pipistrel Aircraft

Pipistrel, which was acquired by Textron Aviation, doesn’t just manufacture aircraft, it is also offering its certified electric engine, the E811, for sale to other companies interested in using it. Electric STOL developer Airflow selected the E811 for use in their upcoming aircraft, the M200.


Image credit: Rolls-Royce promotional video
Primary location: London, United Kingdom
Website: rolls-royce.com

In aviation Rolls-Royce may be best known for their enormous piston engines that powered Second World War fighter aircraft and their high-bypass turbofan engines that power many airliners today. However, Rolls-Royce is also a big player in the electric aviation space, being one of the three parties that together developed the Spirit of Innovation aircraft that set the speed record for electric aircraft and are currently developing an electric regional aircraft together with Tecnam. Rolls-Royce also acquired Siemens’ electric aircraft technology division in 2019.

SuperOx (СуперОкс)

Image credit: Wikimedia Commons
Primary location: Moscow, Russia
Website: superox.ru

SuperOx (СуперОкс) develops various solutions for complex electrical systems, including aerospace applications. Most notably, they’ve developed and tested various electric motors and supporting systems for aviation use in to 50kW to 500kW range and are supporting a project to develop a 1MW motor (the ASuMED project) with various European partners. If this partnership is still alive after the invasion of the Ukraine is unclear at this time. Pictured here is a SuperOx motor fitted to the front of a Yak-40 testbed.

Universal Hydrogen

Image credit: Universal Hydrogen / Business Wire
Primary location: Hawthorne, California, United States
Website: hydrogen.aero

Universal Hydrogen is a developer of hydrogen fuel systems for aviation use. This includes both hydrogen fuel-cell technology and hydrogen burning technology for longer range aircraft. The initial focus is on converting existing turboprop aircraft such as the ATR-72 and De Havilland Canada Dash 8 to hydrogen fuel-cell technology.

Wright Electric

Image credit: Wright Electric / Business Wire
Primary location: Albany, New York, United States
Website: weflywright.com

Wright Electric develops electric propulsion systems primarily but not exclusively intended for aviation use, which includes motors, inverters and cooling systems. Currently, Wright plans to modify BAE 146 aircraft to prove their technology but is also intending to develop their own aircraft, the Wright 1. The motors developed by Wright Electric power relatively small ducted fans which can be packed together in a larger propulsion unit, with multiple motors packed together replacing a single conventional high-bypass turbine.


Image credit: ZeroAvia / PR Newswire
Primary location: Cotswold Airport, United Kingdom
Website: zeroavia.com

ZeroAvia develops hydrogen fuel-cell systems for aviation use. In the near-term, ZeroAvia’s emphasis is on converting existing aircraft to use hydrogen fuel-cell technology and is currently working on a conversion of a Dornier 228 turboprop. They also intend to supply the hydrogen fuel-cell powertrain for Otto Aviation’s Celera 500L.