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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsPieterlenEnergyOptimizer AG
EnergyOptimizer AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of EnergyOptimizer GmbH is the development and implementation of solutions for efficient and renewable energy supply, particularly in the field of decentralized energy supply solutions, such as solar installation and electrical installation. The company offers services such as energy consulting, planning and implementation to support customers in reducing their energy costs and CO2 emissions.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
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4.4/5

EnergyOptimizer AG

✓ Offered8
Photovoltaic system
Photovoltaic systems for buildings, from design and installation to commissioning; also systems tailored to self-consumption and with storage integration prepared.
Self-consumption optimization
Self-consumption optimization with battery storage, a wallbox or intelligent hot-water preparation to increase the self-consumption rate and reduce energy costs.
Energy management system
Energy management systems for networking intelligent loads, including charging and discharging electric vehicles via V2X.
Design and installation of PV systems
Design and installation of photovoltaic systems up to commissioning, including implementation with partners and design for long service life.
Advisory and analysis
Analysis and advisory within the renewable energy ecosystem, from power generation and energy management to cost-effective energy optimization for small and large projects.
Service, maintenance and sales
Service, maintenance and sales for renewable energy systems, including monitoring, regular maintenance, fault rectification and advice on suitable expansions.
Thermal energy integration
Integration of thermal energy with heat pumps to jointly optimize electrical and thermal energy in the building.
Environmental energy
Use of environmental energy and passive heat to reduce the building’s demand for electrical and thermal energy.
Trust & reputation

ranQ Trust Score of EnergyOptimizer AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

EnergyOptimizer AG scores 74.1 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.61.424%
  • 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.83.810%
  • 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.100.08%
EnergyOptimizer AG scores 92.3 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.82.07%
EnergyOptimizer 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%
EnergyOptimizer AG scores 91.4 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 35.91.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

EnergyOptimizer AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.2 out of 5 stars from 26 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
4.2
of 5

Aggregated from 26 reviews across all connected sources

Sources
GGoogle4.226
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Sägestrasse 18
2542 Pieterlen
Opening hours
Mon
14:00 - 16:00
Tue
08:00 - 11:30, 14:00 - 16:00
Wed
08:00 - 11:30, 14:00 - 16:00
Thu
08:00 - 11:30, 14:00 - 16:00
Fri
08:00 - 11:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-114.146.662
Founded
2008 · 18 years
Last commercial register change
December 16, 2025
Employees
21 to 50
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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