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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersMartignySinergy Infrastructure SA
Sinergy Infrastructure SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Sinergy Infrastructure SA is a utility company providing services in heating (district heating and district cooling), electricity, drinking water and wastewater, and multimedia. Its offerings include photovoltaic and energy-storage solutions, electric vehicle charging infrastructure, and Internet, TV and telephony services for residential and business customers.

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Offering

Products & services

Industry:Energy Suppliers
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Sinergy Infrastructure SA

10
Potable water
Potable water sourced from the Champex valley springs, distribution up to the tap, water quality, connection request, tariffs, regulations and FAQ.
Wastewater
Collection and treatment of wastewater, connection, tariffs, regulations and FAQ, with treatment at the STEP of Martigny for several municipalities.
District heating
District heating network, connection request, technical information, tariffs, network map, CAD Fully and geothermal projects.
District cooling
District cooling network, tariffs and technical information for cooling without energy-hungry air conditioners.
Natural gas heating
Natural gas heating network, connection request and gas tariffs for heat applications in Martigny.
Natural and local electricity
Electricity supply, electricity tariffs, energy buyback and steps to obtain electricity.
Photovoltaics
Solar installation, solar contracting, solar calculator, energy storage, plug-and-play solutions and energy sharing.
Mobility
Charging points for shared parking lots, private individual charging stations and public charging points for charging electric vehicles.
Energy savings
Advice and support to reduce energy consumption, with information sessions and energy-saving measures in everyday life.
Carbon coaching
Analysis of the carbon footprint and actions to reduce it as part of an energy transition programme.
Trust & reputation

ranQ Trust Score of Sinergy Infrastructure SA: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Sinergy Infrastructure SA scores 69.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.48.624%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.97.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Sinergy Infrastructure SA scores 94.3 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.90.07%
Sinergy Infrastructure SA scores 85.0 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).85.022%
Sinergy Infrastructure 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

Sinergy Infrastructure SA reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 3.9 out of 5 stars from 46 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
3.9
of 5

Aggregated from 46 reviews across all connected sources

Sources
GGoogle3.946
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

Rue du Collège 7
1920 Martigny
Opening hours
Mon
08:30 - 18:00
Tue
08:30 - 12:00, 13:30 - 18:00
Wed
08:30 - 12:00, 13:30 - 18:00
Thu
08:30 - 12:00, 13:30 - 18:00
Fri
08:30 - 12:00, 13:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.405.438
Founded
2001 · 25 years
Last commercial register change
May 28, 2026
Employees
51 to 100
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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