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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersCrissierSIE SA
SIE SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company is primarily active in the energy supply and service sector, particularly in the field of renewable energies. The core activities include: energy distribution and supply (electricity, heat), renewable energies (photovoltaics, district heating, heat pumps), energy efficiency and consulting (energy diagnostics, incentive consulting), electromobility and charging stations, public and private lighting, smart city solutions and services, and multimedia services (fiber optics, dark fiber, multimedia services). The company also offers various services such as energy contracts, consulting and management.

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Offering

Products & services

Industry:Energy Suppliers
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SIE SA

✓ Offered8
Electricity
Electricity supply, tariffs and price lists, grid connection, meter readings, installation checks and smart meters.
Electricity products SIE Nature and SIE Nature +
Electricity offers with choice of generation method and origin, including SIE Nature 100% hydro and SIE Nature + with a mix of hydro and photovoltaic.
Multimedia
Multimedia connection, FTTH fibre optic, multimedia network, Internet/TV/telephony offers, Sunrise and Yallo solutions, services for private customers and businesses.
TVT PRO
Multimedia packs for businesses with high-speed Internet, fixed IP, cybersecurity, telephony and collaboration tools.
Renewable energy
Photovoltaics, district heating and heat pumps, with support for self-production, thermal energy and sustainable infrastructure.
Energy services
Incentive consulting, CECB energy diagnosis, microgrids, self-consumption communities, virtual aggregation, energy contracting and network analysis.
E-mobility
Services related to charging stations and the integration of electric mobility solutions.
Public and private lighting
Public and private lighting solutions, including management and lighting-related services.
Trust & reputation

ranQ Trust Score of SIE 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.

SIE 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%
SIE SA scores 92.3 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.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.82.07%
SIE SA scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
SIE 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

SIE 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.

Knowledge

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Comparisons

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Location

Chemin de la Gottrause 11
1023 Crissier

At a glance

Legal form
Corporation
UID
CHE-106.840.789
Founded
1998 · 28 years
Last commercial register change
January 8, 2025
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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