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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentEnergy SuppliersLachen SzEW Lachen AG
EW Lachen AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity includes providing energy and water supply services, including: electricity supply with various tariffs and products for private and commercial customers; solar energy and photovoltaic systems (PVA); water supply with drinking water and corresponding products and prices; fiber optic network and broadband services; GIS specialist departments and survey areas; drone surveying and photogrammetry. The company also offers various services such as installation control, reporting and savings tips.

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Offering

Products & services

Industry:Energy Suppliers
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4.1/5

EW Lachen AG

11
Electricity supply
Electricity supply for households and businesses, with standard and natural electricity products, tariffs for low-voltage and medium-voltage connections, as well as grid use and metering.
Water supply
Potable and utility water supply in Lachen and surrounding areas, including the water price, potable water labelling and temporary connections.
Signal supply
Basic Radio/TV signal, fibre-optic network for TV, internet and telephony, and partner offers via the signal network.
GIS services
Collection, modelling and maintenance of pipeline/utility line data, data handovers for projects, system configurations and migrations, as well as web access to current geodata.
Utility service line plan order
Ordering utility service line plans using a form per municipality for utility networks such as electricity, water, sewerage and, in part, district heating.
Installation inspection
Periodic inspection of electrical installations, safety documentation, extension of deadlines and reporting for new, conversion and existing systems.
Lachen solar community
Solar power via a right of supply for the PV system of the Seewasserwerk Lachen, with participation via modules and a 20-year term.
Photovoltaics (PV) & certificate of origin (HKN)
Feed-back tariffs for solar power fed in, compensation for base supply and transfer of the HKN, as well as minimum compensation for smaller plants.
Customer service
Billing for electricity, water and signal, move notifications, fault reports, as well as invoices, payments and e-invoices.
E-mobility
Services related to e-mobility via the subsidiary ener4 AG, with a reference to the relevant specialist page.
Self-consumption (collective self-consumption, ZEV)
Services related to joining together for self-consumption via the subsidiary ener4 AG, with a reference to the relevant specialist page.
Trust & reputation

ranQ Trust Score of EW Lachen AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

EW Lachen AG scores 61.6 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.53.824%
  • 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.49.510%
  • 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%
EW Lachen 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%
EW Lachen AG scores 86.7 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).86.722%
EW Lachen AG scores 46.9 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 35.77.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.16.74%
Qualifications+0.00

EW Lachen AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.7 out of 5 stars from 6 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
3.7
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle3.76
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

September 9, 2025Media
Das sind die Strompreise 2026 in der Gemeinde Lachen
luzernerzeitung.ch
September 2, 2025Media
Energiekosten 2026: Diverse Anpassungen in der Region
march24.ch
April 18, 2025Media
Neubau bietet 220 Arbeitsplätze | Lachen
march24.ch

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Location

Neuheimstrasse 44
8853 Lachen Sz
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 14:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.953.387
Founded
2001 · 25 years
Last commercial register change
October 26, 2022
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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