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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringInwilProlewa Elektro-Engineering AG
Prolewa Elektro-Engineering AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Prolewa Elektro-Engineering AG is the planning and implementation of electrical, measurement, control, regulation and control technology for wastewater treatment plants, sewer and combined networks, water supplies and district heating systems, with the aim of maintaining water quality and removing pollutants in an ecologically and economically sustainable manner.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered7
Electrical engineering works for wastewater treatment plants and water supply
Electrical engineering works according to SIA 108 for wastewater treatment plants and water supply, from preliminary design and project design through to execution, project completion and partial services.
Consulting, concepts and variant studies
Consulting, assessment of the current state, clarification of the desired state, concepts, development of variants and studies, expert reports, expert opinions and a master plan.
Engineering design and planning of measurement, control, regulation and electrical systems
Engineering design for measurement, control, regulation and electrical systems, including installation drawings, layouts, execution documents, piping and instrumentation diagrams as well as specifications.
Automation, process control systems and remote telemetry
PLC controls, automation systems, process control systems, visualization systems, remote telemetry, transmission technology and networking.
Commissioning, acceptance and optimisation of plants
Commissioning, acceptance and handover of planned plants, optimisation of control tasks and processes as well as support during the project phases.
Consideration of energy, low-voltage and safety systems
Development of energy concepts as well as specialist areas such as low-voltage engineering, emergency power systems, UPS, KEV systems, HKN systems, monitoring systems and electrical corrosion protection.
Reviewing, coordinating and managing electrical and I&C (EMSR) projects
Reviewing, coordinating and managing, as well as project-specific quality management for electrical and I&C (EMSR) projects in wastewater treatment plants and utility systems.
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4.1/5

Prolewa Elektro-Engineering AG

Trust & reputation

ranQ Trust Score of Prolewa Elektro-Engineering AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Prolewa Elektro-Engineering AG 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.
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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%
Prolewa Elektro-Engineering AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Prolewa Elektro-Engineering AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Prolewa Elektro-Engineering AG scores 2.0 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 35.2.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Prolewa Elektro-Engineering AG 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.

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Location

Industriestrasse 57
6034 Inwil

At a glance

Legal form
Corporation
UID
CHE-108.383.509
Founded
1995 · 31 years
Last commercial register change
April 10, 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.100.06%
  • 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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