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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersLausanneEnergie Ouest Suisse (EOS) SA
Energie Ouest Suisse (EOS) SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Energie Ouest Suisse (EOS) SA is a strategic holding company that coordinates and represents the interests of its shareholders and manages investments and holdings in the energy sector. Its activities include developing renewable energy production abroad—primarily onshore wind and ground-mounted solar—operating subsidiaries for these assets, managing its stake in Alpiq Holding and financing deep geothermal projects.

AI-generated
Offering

Products & services

Industry:Energy Suppliers
✓ Offered3
Development of new renewable energies (NEE)
Development and acquisition of wind power and ground-mounted solar power plants abroad, in particular in France, Germany and Portugal; support for deep geothermal projects in Switzerland.
Administration of the investment in Alpiq Holding
Administration of the investment in Alpiq Holding, the largest Swiss energy group, in which EOS Holding holds a stake of 33.3%.
Synergies and joint interest projects with shareholders
Development of synergies among shareholders through joint interest projects, as well as further development of research into new technological solutions.
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4.1/5

Energie Ouest Suisse (EOS) SA

Trust & reputation

ranQ Trust Score of Energie Ouest Suisse (EOS) SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

Energie Ouest Suisse (EOS) 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.
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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%
Energie Ouest Suisse (EOS) SA scores 95.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • 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.96.07%
Energie Ouest Suisse (EOS) SA scores 85.0 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).85.022%
Energie Ouest Suisse (EOS) SA scores 48.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.80.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.16.74%
Qualifications+0.00

Energie Ouest Suisse (EOS) 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 58%, 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.

Press

Media

January 18, 2025Media
Industrie pétrolière dans la vallée du Rhône: pour ou contre?
rts.ch

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Location

Chemin de Mornex 6
1003 Lausanne

At a glance

Legal form
Corporation
UID
CHE-115.417.533
Founded
2010 · 16 years
Last commercial register change
December 17, 2025
Employees
101 to 500
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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