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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement ConsultingBadenSterr-Kölln & Partner AG
Sterr-Kölln & Partner AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Sterr-Kölln & Partner AG is a consulting firm focused on renewable energy and energy efficiency. The company advises on projects in legal, tax, management consulting, M&A and auditing, with a focus on wind power, photovoltaics, heat supply and innovation.

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Products & services

Industry:Management Consulting
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Sterr-Kölln & Partner AG

✓ Offered
8
Legal Advisory for Renewable Energy
Legal advisory on permitting, environmental, planning, municipal and energy law, plus transactions, corporate law, land-rights protection, due diligence and crowdfunding.
Business Consulting for Renewable Energy
Business consulting on strategy, financing, profitability, valuations and citizen participation for energy generation, distribution, efficiency and business models.
M&A Advisory for Energy Projects
M&A advisory on project sales, project acquisitions and partnerships, with transaction structuring, partner selection, due diligence and contract negotiation.
Tax Advisory for Renewable Energy
Tax advisory on bookkeeping, annual accounts, tax returns, restructurings, business formation and sales, plus energy and electricity tax.
Audit Services for Renewable Energy
Audit services covering EEG and KWKG special audits, corporate and project valuations, and review of planning assumptions in the energy sector.
Project Financing for Renewable Energy
Project financing with structuring, due diligence, term sheets, loan and security documents, legal opinions, and support through signing and financial close.
Project Transactions
Project transactions for wind, PV and heat projects, including structuring, investor search, valuation, contract negotiation, signing, closing and post-closing support.
Due Diligence Reviews
Due diligence reviews combining legal, tax, financial and commercial analysis of projects and companies, plus recommendations and contract input.
Trust & reputation

ranQ Trust Score of Sterr-Kölln & Partner AG: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

x

Data basis 54% · As of October 2026

Sterr-Kölln & Partner 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.
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%
Sterr-Kölln & Partner AG scores 46.4 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.0.012%
  • 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%
Sterr-Kölln & Partner AG scores 83.3 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).83.322%
Sterr-Kölln & Partner 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

Sterr-Kölln & Partner AG reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». 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.

Knowledge

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Location

Bruggerstrasse 69
5400 Baden

At a glance

Legal form
Corporation
UID
CHE-365.618.827
Founded
2026 · 0 years
Last commercial register change
April 2, 2026
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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