ZENNER International

Name

ZENNER International

Legal name

Zenner International GmbH & Co.KG

Website

https://zenner.com

Company type

Private

Founded year

1903

Operating status

Operating

Ownership category

akta.pro rank

Product category

Smart Metering and Utility Measurement Equipment

NAICS

Totalizing Fluid Meter and Counting Device Manufacturing (334514)

SIC

Totalizing Fluid Meters & Counting Devices (3824)

akta.pro primary industry

AMI/AMR Smart Meter Deployment & Operations (Head-End, Network & MDM) (EUAJACAD)

akta.pro secondary industries

Network Monitoring & Smart Water Sensors (Pressure/Flow/Noise Loggers, IoT) (EUANAKAB), Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD), Meter Data Management & Analytics (MDM, validation/estimation/editing, usage insights) (EUANAIAB)

Keywords

• Smart metering solutions
• Water meters
• Heat energy meters
• Gas meters
• IoT remote reading

Headquarters

HQ city

Saarbrücken

HQ country

Germany

HQ region

Europe

Offices11 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Smart Meter Hardware Sales: Manufacturing and sale of water meters, heat/cooling energy meters, gas meters, and sensors. Production capacity exceeds 5 million gas meters annually.
2. IoT Solutions and Communication Modules: Sale of IoT communication modules (LoRaWAN, Wireless M-Bus, M-Bus, NB-IoT), gateways, and smart accessories for meter connectivity.
3. B.One Digital Platform Services: Digital ecosystem offering data services, platform infrastructure, and applications for smart buildings, smart cities, utilities, and industry verticals.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

ZENNER International develops and manufactures water, heat, cooling, and gas meters along with IoT sensors, LoRaWAN gateways, and communication modules for smart metering and remote reading. The company operates the world's largest LoRaWAN network with over 11 million integrated sensors and offers the B.One Digital Solutions Ecosystem combining smart metering devices, wireless networks (LoRaWAN, Wireless M-Bus, M-Bus, NB-IoT), data services, and applications for utilities, real estate, smart cities, and industrial customers across 100+ countries.

Product overview

ZENNER International is a global manufacturer of smart metering solutions offering water meters, heat and cooling energy meters, gas meters, submetering systems, and digital IoT solutions for remote reading. The product portfolio includes residential water meters (MTKD, MNK, RTKD, RNK, ETKD series), bulk water meters (IUW, WPD, WPHD, WSD, WPVM, WPVR series), and irrigation meters (WI-N, WBD) using multi-jet, single-jet, rotary piston, and ultrasonic technologies. Thermal energy solutions include zelsius C5 compact heat meters with IUF, CMF, and ISF flow sensors, plus multidata WR3 calculators. Gas metering spans Atmos diaphragm meters (G1.6-G40), smart gas meters with LoRaWAN/NB-IoT connectivity, IC-card prepaid meters, turbine meters, and volume correctors. The IoT ecosystem encompasses CO2 indicators, temperature/humidity sensors, heat cost allocators (caltos E), and smoke alarms. Communication technologies include LoRaWAN, Wireless M-Bus, M-Bus, and NB-IoT through EDC, PDC, and NDC communication modules. The B.One digital platform unifies all components—smart devices, wireless networks, data services, and applications—for utilities, real estate, smart cities, and industrial applications, with over 11 million LoRaWAN sensors integrated into what ZENNER describes as the world's largest LoRaWAN network.

Differentiator

Problem solved

Functional benefit

Brands

• Atmos: Brand for gas meters, including diaphragm gas meters, smart gas meters (LoRaWAN, NB-IoT, GPRS), industrial & commercial diaphragm gas meters, and temperature-compensated gas meters.
• zelsius
• Minomess
• IUWS
• IUW
• Minolist
• B.One
• caltos E
• EASY PROTECT
• Blocker
• M22

Products and services

• Water Meters (MTKD, MNK, RTKD, RNK, ETKD series) Comprehensive range of residential and commercial water meters using multi-jet, single-jet, rotary piston, and piston-type measuring principles for cold and hot potable water measurement. Suitable for utilities and building owners.
• Bulk Water Meters (IUW, WPD, WPHD, WSD, WPVM, WPVR series) High-capacity water meters including ultrasonic bulk meters (IUW) and Woltman-type meters for drinking water distribution and industrial applications with remote reading capabilities via M-Bus, wireless M-Bus, LoRaWAN, SIGFOX, GSM or pulser.
• Irrigation Water Meters (WI-N, WBD) Specialized Woltman-type water meters designed for use with contaminated water in agriculture, sewage treatment, and wastewater systems, handling impurity levels up to 30%.
• zelsius C5 Heat and Cooling Energy Meters Compact thermal energy meters with ultrasonic (IUF), measuring capsule (CMF), and single-jet (ISF) flow sensors for heating and cooling system measurement, compliant with European Energy Efficiency Directive (EED).
• multidata WR3 Multifunctional Energy Calculator Innovative multifunctional energy calculator for heat and cooling meters with M-Bus, ZR-bus, or RS232 connectivity options for remote reading. Over 100,000 heat meters were sold by 2010.
• Atmos Diaphragm Gas Meters Diaphragm gas meters available in sizes G1.6 to G6, characterized by precise measurements, constant measuring stability, long life, and high reliability for residential, commercial, and industrial applications.
• Atmos Smart Gas Meters (LoRaWAN/NB-IoT/GPRS) Smart diaphragm gas meters with built-in shut-off valve and smart controller supporting LoRaWAN, GPRS, or NB-IoT connectivity, enabling remote monitoring and automatic shut-off capabilities for utility providers.
• Atmos IQ IC-Card Prepaid Gas Meters Credit gas meters using encrypted IC cards as data carriers for prepaid gas metering, available in IG1.6S, IG2.5S, and IG4S sizes for residential and commercial prepaid utility applications.
• ZTM Gas Turbine Flow Meters
• EVC Electrical Volume Corrector
• ZENNER CO2 Indicator B.One
• Indoor T+H Sensor B.One
• caltos E B.One Heat Cost Allocator
• EASY PROTECT B.One Smoke Alarm
• B.One Digital Solutions Ecosystem Unified digital solution ecosystem combining smart metering technology, wireless networks (LoRaWAN, Wireless M-Bus), data services, and applications for utilities, real estate, smart cities, and industry. Provides interoperability, data security, and integration of devices from different manufacturers.
• LoRaWAN Gateways (B.One Indoor and Outdoor)
• IUWS B.One Ultrasonic Water Meter
• B.One Metering as a Service

Quantifiable outcome

• Non-revenue water losses averaging 30-35% globally can be addressed through smart metering adoption
• +1 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

One partnership is on record.

• LoRa AlliancecoreStrategic or Co-development Partner · 1 November 2025ZENNER is an active member of the LoRa Alliance and contributes to the development of the LoRaWAN standard. The company operates the world's largest LoRaWAN network with 11+ million sensors and has been recognized with Contribution Awards for its commitment to advancing the standard globally.

Scale indicators6 records

Recent moves11 records

Expansion highlights5 records

Direct peers

• Diehl Metering: German-based manufacturer of water, heat, and gas meters with strong European footprint and IoT/communication modules. Directly competes with ZENNER across residential and commercial metering, particularly in DACH and EU markets.
• Arad Group: Israeli-based manufacturer of water meters and AMR/AMI solutions with international distribution. Directly comparable product portfolio in residential and bulk water metering with similar smart connectivity focus.
• Kamstrup: Danish smart metering specialist focused on heat, water, and electricity meters with ultrasonic technology. Closely comparable to ZENNER's ultrasonic meter range and European utility customer base.
• MADDALENA: Italian water meter manufacturer with growing smart/AMR product line. Regional peer with overlapping product range and competing for European utility contracts alongside ZENNER.
• Badger Meter: US-based manufacturer specializing in flow measurement and smart water metering with cellular/IoT connectivity. Direct competitor in the water metering segment with comparable smart-metering product strategy.

Broad incumbents

• Itron: Global leader in water, gas, and electricity metering with AMI/AMR solutions. Operates at greater scale than ZENNER across all utility verticals, with particularly strong North American presence and broader SaaS/data offerings.
• Sensus (Xylem): Xylem-owned smart metering brand providing AMI solutions for water, gas, and electricity utilities. Competes with ZENNER in utility-scale water and gas AMI deployments globally.
• Landis+Gyr: Large global smart metering and grid management company serving electricity, gas, and water utilities. ZENNER competes primarily at the water/heat/gas metering level while Landis+Gyr is broader in smart grid and electricity.

Emerging players

• Axioma Metering: European ultrasonic water meter manufacturer targeting smart metering applications with LoRaWAN and NB-IoT. Comparable technology approach to ZENNER's ultrasonic IUW/IUWS range but smaller scale and newer entrant.
• Engelmann Sensor: German heat and water meter manufacturer with focus on radio and M-Bus communication modules. Comparable in DACH heat metering and submetering segments with ZENNER's zelsius and caltos product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/zenner_news?lang=de
• Facebookde-de.facebook.com/zennernews
• LinkedInlinkedin.com/company/zenner

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZENNER International