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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSt. Margrethen SgGRAVAG Energie AG
GRAVAG Energie AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of GRAVAG Energie AG and GRAVAG Thermo is energy supply and service, particularly in the planning, installation, maintenance and repair of heating and energy systems, such as heat pumps, gas and oil heating systems, pellet heating systems, hybrid systems, power-generating heating systems, combined heat and power (CHP) systems and photovoltaic systems. In addition, the company offers energy consulting, energy analysis and optimization as well as the sale of energy.

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Offering

Products & services

Industry:Plumbing & Building ServicesEnergy Suppliers
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3.9/5

GRAVAG Energie AG

✓ Offered6
Natural Gas Supply
Natural gas supply for households, businesses and industry in the regional service area, including energy for heating, domestic hot water, cooking, grilling and vehicle fuel.
Biogas Supply
Biogas supply and heating with biogas from organic residual materials, including injection into the gas grid and use for heat, hot water, cooking and mobility.
Liquefied Gas Services
Liquefied gas services from installation to periodic inspection, for tank systems, caravans, motorhomes, boats, garden sheds, events, and commercial and industrial installations.
Heating Solutions (GRAVAG Thermo)
Heating solutions with consulting, analysis, installation, maintenance and repairs for heating systems; including heat pumps, gas and oil heating, pellet heating, hybrid systems and photovoltaic systems.
Gas Network Operations
Operation, expansion and maintenance of gas supply networks with gas connections, meter replacements, meter readings and ensured stable, safe operation.
GEAK Consulting
Consulting on the cantonal building energy certificate (GEAK) with property analysis as a basis for installing gas or oil heating systems and meeting cantonal requirements.
Trust & reputation

ranQ Trust Score of GRAVAG Energie AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 100% · As of October 2026

GRAVAG Energie AG scores 44.3 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.27.124%
  • 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.58.610%
  • 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.78.08%
GRAVAG Energie AG 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%
GRAVAG Energie AG scores 86.7 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).86.722%
GRAVAG Energie AG scores 46.5 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 35.62.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.30.04%
Qualifications+0.00

GRAVAG Energie AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 2.7 out of 5 stars from 9 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
2.7
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle2.79
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

November 24, 2022Media
Der Kalender einer Künstlerfamilie macht Lust auf Spaziergänge
rheintaler.ch
December 30, 2021Media
Gravag erhöht Gaspreis erneut
rheintaler.ch
November 5, 2020Media
«Die Seele braucht Kunst»
rheintaler.ch
January 12, 2018Media
ST. MARGRETHEN: Gravag-Retter lebte noch drei Jahre
tagblatt.ch

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Location

Industriestrasse 21
9430 St. Margrethen Sg
Opening hours
Mon
07:00 - 12:00, 13:30 - 17:00
Tue
07:00 - 12:00, 13:30 - 17:00
Wed
07:00 - 12:00, 13:30 - 17:00
Thu
07:00 - 12:00, 13:30 - 17:00
Fri
07:00 - 12:00, 13:30 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.806.331
Founded
1979 · 47 years
Last commercial register change
June 10, 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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