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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesRepair of Machinery & Electronic DevicesSchlierenMGG Service AG
MGG Service AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of MGG Service AG and its subsidiary MGG Kraftwerksanlagen Service GmbH is the provision of services in the areas of maintenance, engineering and emergency response for power plant systems, particularly in the development and delivery of specialized products such as the "Smart Aqua Box", "OPTIMA Rostsystem" and "Smart Slag Shaft".

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Products & services

Industry:Repair of Machinery & Electronic DevicesTechnical Consulting & Engineering
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4.1/5

MGG Service AG

✓ Offered8
Maintenance
Inspection and maintenance of plants to enhance operational safety, availability and asset value retention; with detailed planning, follow-up and budget security in short shutdown periods.
Engineering
System optimization, project management and technical consulting to extend service life, improve efficiency and reduce life-cycle costs and interface effort.
Emergency response
24/7 emergency service for existing customers, individually tailored to response speed and staff qualifications according to customer requirements.
Spare parts
Procurement and storage of spare parts for plant components, independent of the manufacturer; including further development of optimized parts and short-notice availability when needed.
Smart Aqua Box
Feed chute for combustion plants with decoupled cooling and wear protection, modular design and replaceable wear plates to reduce maintenance costs and downtime.
Smart slag chute
Water-cooled slag chute for combustion plants with decoupled wear protection, modular installation and easy maintenance through targeted replacement of wear parts.
Optima grate system
Grate system for Martin back-push grates and other grate systems to reduce maintenance costs, decrease grate jamming and reduce grate fall-through.
Optima Stössel clinker removal system
Clinker removal system for waste incineration plants with high discharge capacity, wet and dry operation, modular adaptation and maintenance-friendly design.
Trust & reputation

ranQ Trust Score of MGG Service AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 88% · As of October 2026

MGG Service AG scores 53.3 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.68.224%
  • 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.17.610%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
MGG Service AG scores 89.3 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.70.07%
MGG Service 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%
MGG Service AG scores 77.1 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 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

MGG Service AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 88%, 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Ifangstrasse 5
8952 Schlieren
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.487.910
Founded
2003 · 23 years
Last commercial register change
May 9, 2025
Employees
11 to 20
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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