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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryIndustryEnergy IndustryZurichSolar21 Asset AG
Solar21 Asset AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Solar21 Asset AG is an independent electricity partner that provides energy management for institutional property owners, purchases locally produced solar power under fixed-price PPAs and markets solar-based electricity products (Strom21) to tenants. Services include analysis, consulting, contract and billing administration, communication, ongoing monitoring and support for storage and e-mobility integration.

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Offering

Products & services

Industry:Energy Industry
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3.8/5

Solar21 Asset AG

✓ Offered6
Strom21
Solar power for properties, including take-off of the electricity generated on the roof at a fixed price, marketing to tenants, administration and three power products: Eco, Plus and Star.
Solar21 PPA
Long-term electricity offtake agreement for existing or planned solar power systems, with energy management, distribution, communication and administration within the properties.
Energy management for properties
Analysis, consulting, planning and operation for solar power in real estate, including electricity management, financing, detailed design and project implementation.
Communication and billing for electricity products
Information for tenants about electricity products, monthly transparent billing and, on request, marketing of the sustainability measures.
Administration and contract management
Contract management, legal clarifications for ZEV and EVG, delivery of the electricity meters, as well as energy metering and electricity invoicing.
Monitoring and optimization of solar projects
Monitoring of goal achievement, analysis of results, identifying production and savings potential, as well as optimization of the control system and data management.
Trust & reputation

ranQ Trust Score of Solar21 Asset AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Solar21 Asset AG scores 56.6 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.70.824%
  • 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.50.08%
Solar21 Asset AG scores 67.9 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.50.012%
  • 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%
Solar21 Asset 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%
Solar21 Asset AG scores 42.9 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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Solar21 Asset AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Max-Högger-Strasse 2
8048 Zurich
Opening hours
Mon
09:00 - 17:00
Tue
09:00 - 17:00
Wed
09:00 - 17:00
Thu
09:00 - 17:00
Fri
09:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-364.886.437
Founded
2023 · 3 years
Last commercial register change
August 13, 2024
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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