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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsEndingenTerraSol AG
TerraSol AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

TerraSol AG is a provider of services and products in the field of renewable energies, particularly in the areas of solar energy and heat pumps. The core activities include consulting, planning, execution and maintenance of solar energy and heat pump systems, as well as the distribution of heat storage systems. The company also offers mediation and service services.

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Offering

Products & services

Industry:Solar & Photovoltaics
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3.8/5

TerraSol AG

✓ Offered
8
Heating replacement with subsidy consulting
Tailored consultation, subsidy clarification and support during the switch from oil or gas heating systems to heat pumps, including coordination of the heating replacement.
Photovoltaic systems
Advisory, planning, delivery and professional installation of photovoltaic solutions for self-consumption or grid feed-in, optionally with storage systems.
Solar energy and solar thermal systems
Thermal solar systems for domestic hot water preparation, heating support, industrial processes, and for the regeneration of borehole heat exchangers and earth collectors.
Heat pumps
Heat pump systems for new builds and existing buildings, with air/water, brine/water, water/water and direct-expansion solutions.
Heat storage
Buffer and combination tanks for storing heating energy and producing domestic hot water for heating systems, solar installations and heat pumps.
Energy storage and energy management
Battery storage, water storage and smart energy management via an app for intermediate storage, control and optimization of solar electricity and heat.
Service and system maintenance
Inspection and maintenance of PV or heating systems, optimization of existing control or storage technology, and support with faults and upgrades.
PV/T collectors
Collectors for the combined use of electricity and heat, as a hybrid solution in the field of solar energy.
Trust & reputation

ranQ Trust Score of TerraSol AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

TerraSol AG scores 51.4 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.66.724%
  • 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.27.910%
  • 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.35.08%
TerraSol AG scores 76.6 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.79.212%
  • 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.55.07%
TerraSol AG 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%
TerraSol AG scores 8.9 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 35.8.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

TerraSol AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 2 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
4.5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle4.52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Winkelstrasse 6
5304 Endingen

At a glance

Legal form
Corporation
UID
CHE-100.952.763
Founded
2018 · 8 years
Last commercial register change
April 7, 2025
Employees
1 to 10
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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