ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringWiesendangenONZA GmbH
ONZA GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

ONZA GmbH develops technical solutions for energy storage, energy infrastructure, and the optimisation of existing energy systems. The company provides services in battery systems, photovoltaics, system integration, and technical consulting across the full lifecycle.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
No score yet

ONZA GmbH

Solar & Photovoltaics
Sustainability Sector
✓ Offered5
Technical Consulting for Energy Systems
Lifecycle support for energy systems, from concept and technology selection to diagnostics, maintenance, and ongoing optimisation.
Energy Storage Optimisation
Technical assessment and optimisation of battery systems, including lithium-ion, sodium-ion, and salt-based storage, with focus on efficiency, ageing, and remaining service life.
Photovoltaic Inspection
PV check with thermographic aerial imaging, technical inspection, and analysis of production and consumption data for early fault detection.
Energy Infrastructure Planning
Planning, modernisation, and operation of energy infrastructure, focusing on how the overall system works rather than individual components.
Energy System Integration
Connecting photovoltaic, wind power, storage, energy management, and backup systems into robust, scalable end-to-end solutions.
Trust & reputation

ranQ Trust Score of ONZA GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Website authority, Media authority

Data basis 50% · As of October 2026

ONZA GmbH 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.
x
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%
ONZA GmbH scores 50.8 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.25.012%
  • 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.55.07%
ONZA GmbH scores 83.3 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).83.322%
ONZA GmbH has no value in the Visibility area of the ranQ Trust Score because no data is available. The area carries 8% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Website authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 50%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Website authority, Media authority. As of October 2026.

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

Knowledge

No knowledge articles yet

Once ONZA GmbH has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

ONZA GmbH in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank ONZA GmbH by reviews, experience and specialisations.

Is this your company?

Claim the company profile of ONZA GmbH to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Rehweg 4
8542 Wiesendangen

At a glance

Legal form
Limited Liability Company
UID
CHE-411.669.787
Founded
2025 · 1 year
Last commercial register change
December 3, 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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    PA
    Planforum AG
    Winterthur
    BG
    Bühler GLT - Engineering
    Seuzach
    SF
    Swiss Future Technology GmbH
    Hombrechtikon
    SG
    schnellladen gmbh
    Hettlingen
    KS
    Körber Supply Chain CH AG
    Zurich
    MA
    MECOS AG
    Zurich
    SG
    Sysion GmbH
    Hombrechtikon
    AA
    Audio-Ciné AG
    Zurich