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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryAircraft ManufacturingSionH55 SA
H55 SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of H55 is the development and manufacturing of electrical propulsion systems for aviation, specifically lightweight, modular and certifiable energy storage and management systems as well as complete electrical propulsion systems.

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Offering

Products & services

Industry:Aircraft ManufacturingMechanical Engineering Industry
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H55 SA

✓ Offered6
Electric Propulsion System (EPS)
Electric Propulsion System (EPS) for aircraft, consisting of an Energy Storage System, Electric Propulsion Unit, Power Management, and associated components and interfaces.
Energy Storage System (ESS)
Energy Storage System (ESS) with battery packs, Battery Management Systems, and all interfaces to the EPS and aircraft systems, modular and adaptable to customer requirements.
Electric Propulsion Unit (EPU)
Electric Propulsion Unit (EPU) with electric motor, Motor Controller, inverter, and power electronics, designed for redundant and certifiable propulsion systems.
Aircraft integration
Aircraft integration for existing and new aircraft programs, including support with integration, optimization, and adaptation of the electric propulsion and battery systems.
Certification and type certification support
Certification and type certification for electric propulsion systems and battery systems, including EASA validation, DOA/POA, safety standards, and support with the FAA and Transport Canada.
Customer programs for aircraft OEMs and operators
Customer programs for OEMs, component manufacturers, and operators, with tailored electric and hybrid solutions for new aircraft designs and retrofit programs.
Trust & reputation

ranQ Trust Score of H55 SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

H55 SA has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
H55 SA scores 87.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.89.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
H55 SA scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
H55 SA scores 100.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

H55 SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Route de l'Aéroport 10
1950 Sion

At a glance

Legal form
Corporation
UID
CHE-423.538.169
Founded
2015 · 11 years
Last commercial register change
April 23, 2026
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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