When was H55 founded?

H55 was founded in 2015 and raised its 1st funding round 3 years after it was founded.

Where is H55 located?

H55 is headquartered in Sion, Switzerland. It is registered at Route de l'Aéroport 10, 1950 Sion, CH.

How many employees does H55 have?

As of Jun 30, 2026, the latest employee count at H55 is 142.

Is H55 a funded company?

H55 is a funded company, having raised a total of $147M across 7 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Feb 20, 2018.

When was the latest funding round of H55?

H55's latest funding was a $***** Series C round on Jul 24, 2024, with participation from 1 investor.

Where does H55 rank among its competitors?

H55 ranks 3rd amongst 58 active competitors, of which 13 are funded. It stands 3rd in terms of total funding among its competitors. The most recent competitor to raise funding was Greenjets, which secured $40.5M in Jul, 2026.

Who are the top competitors of H55?

H55's top competitors include Aurora, BETA and ZeroAvia. Among them, Greenjets secured the most recent funding round in July, 2026.

H55 - 2026 Company Profile, Team, Funding & Competitors

Company Details

Developer of electric propulsion and energy storage systems for aviation. The company engineers and certifies energy storage that is predictable and safe. It designs protection, monitoring, and mitigation at the cell level. The company's energy storage system is an agnostic platform. It powers next-generation aircraft and shortens certification cycles.

Website: h55.ch/en/
Social
Email ID: *****@h55.ch
Phone Number: +41 **********
Registered Address: Route de l'Aéroport 10, 1950 Sion, CH

Key Metrics

Founded Year

2015

Location

Sion, Switzerland

Stage

Series C

Total Funding

$147M in 7 rounds

Latest Funding Round

Series C, Jul 24, 2024, $*****

Investors

RTX & 8 more

Ranked

3^rd among 58 active competitors

Employee Count

142 as on Jun 30, 2026

Similar Companies

Aurora & 58 more

View H55's full profile

H55 is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
H55 Sa CIN: 1224816 , Switzerland, Active	Feb 20, 2024	-	-	-

H55 has raised a total funding of $147M over 7 rounds. Its first funding round was on Feb 20, 2018. Its latest funding round was a Series C round on Jul 24, 2024 for $*****. 1 investor participated in its latest round. H55 has 9 institutional investors.

Here is the list of recent funding rounds of H55:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jul 24, 2024	4809585	Series C	3245196	1438856	5690884	8983550
Sep 21, 2023	2799106	Series C	9656337	3350089	7688540	8353380
Oct 12, 2022	4004643	Series B	1309101	1813632	RTX	8907214

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View details of H55's funding rounds and investors

The founders of H55 are Andre Borschberg and Sebastien Aymon-Demont. Martin Larose is the CEO of H55.

Here are the details of H55's key team members:

Andre Borschberg: Co-Founder of H55. They are also an angel investor in 1 startup and serve on the board of 1 company.
Contact Info: 1 email address
Sebastien Aymon-Demont: Co Founder & CTO of H55.
Contact Info: 1 email address
Martin Larose: CEO of H55. They serve on the board of 1 company.
Contact Info: 1 email address

H55's Board of Directors

H55's board has 5 active members. Andre Borschberg and Martin Larose are part of team and Andrew Taft Sheehan, Aymeric Sallin and Neil Blatt are independent board members.

Here is the list of H55's board of directors:

Name	Type	Representing	Status	Duration
Andre Borschberg	Team	-	Current	-
dqbncym	Team	-	Current	6y 1m
Andrew Taft Sheehan	Independent board member	-	Current	-
zrgdygu	Independent board member	-	Current	6y 8m
e{xnypg	Independent board member	-	Current	3y 7m

View details of H55's Founder profiles and Board Members

H55's employee count trend

H55 has 142 employees as of Jun 26. Here is H55's employee count trend over the years:

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Top competitors of H55 include Aurora, BETA and ZeroAvia. Here is the list of Top 10 competitors of H55, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Aurora 1989, Manassas (United States), Acquired	Developer of advanced aircraft and enabling technologies for government and commercial sectors	$6.85M	CYwP Funds, National Science Foundation & 2 others	68/100
2nd	BETA 2012, South Burlington (United States), Public	Manufacturer of electric aircraft, charging systems, and customized training programs	$1.66B	Qatar Investment Authority, Fidelity Investments ... & 16 others	66/100
3rd	H55 2015, Sion (Switzerland), Series C	Developer of electric propulsion and energy storage systems for aviation	$147M	ACE & Company, ND Capital & 7 others	65/100
4th	ZeroAvia 2018, Everett (United States), Series C	Manufacturer of hydrogen electric propulsion systems for commercial aviation aircraft	$348M	Barclays, Ecosystem Integrity Fund & 39 others	64/100
5th	Greenjets 2005, London (United Kingdom), Series A	Developer of electric jet engines for sustainable aviation propulsion systems	$47.5M	7percent Ventures, Blossom Capital & 16 others	62/100
6th	Whisper Aero 2021, Crossville (United States), Series A	Developer of electric propulsion systems for aviation, defense, and commercial sectors	$39.5M	Menlo Ventures, Connor Capital & 15 others	56/100
7th	VerdeGo Aero 2017, Daytona Beach (United States), Series B	Provider of power and propulsion technologies to develop electric aircraft	$14.6M	RTX, Hatter Angel Network & 5 others	54/100
8th	magniX 2009, Everett (United States), Unfunded	Developer of electric propulsion systems for aerospace and defense	-	-	50/100
9th	OhmSpace 2021, Southampton (United Kingdom), Seed	Provider of spacecraft propulsion technology for the satellite market	$4.21M	Galaxia, Scientifica & 3 others	49/100
10th	LaunchPoint 1992, Goleta (United States), Early Stage	Provider of hybrid electric propulsion systems and modeling software	$11.4M	National Science Foundation	48/100