What Minol Zenner does

Zenner International, the operating brand of the Minol-ZENNER Group, is a German manufacturer of measurement technology headquartered in Saarbrücken with more than a century of water-metering heritage (founded 1923). The company produces a broad hardware portfolio spanning water meters (multi-jet, positive displacement, piston-type, ultrasonic, and Woltman bulk variants), heat and cooling energy meters under the zelsius C5 line, diaphragm and industrial gas meters under the Atmos brand, and a growing range of IoT sensors including CO2, temperature/humidity, heat cost allocators (caltos), and smoke detectors (EASY PROTECT). Communication options across the portfolio include LoRaWAN, Wireless M-Bus, wired M-Bus, and NB-IoT, and the group operates the world's largest LoRaWAN network with 11 million active sensors and availability in 15 countries as of April 2026.

These hardware products are increasingly sold as part of the B.One digital ecosystem, which combines meters and gateways with the B.One Element Suite IoT platform, parallel-radio device firmware, and Metering as a Service (MaaS) offerings for end-to-end digitization. Revenue is generated through three streams: hardware sales (the historical core), managed services (MaaS), and subscription or recurring revenue (B.One platform). The customer base spans water utilities and municipalities, energy providers, real estate and property managers, and industrial companies, with go-to-market executed via regional enterprise sales directors (Europe & Africa; LATAM & APAC), an IoT e-commerce shop for smaller components, and active participation in industry events such as IFAT Munich, E-world, Enlit Europe, and Smart City Expo World Congress.

Zenner is privately held as Zenner International GmbH & Co. KG with no public listing or venture funding disclosed. It operates through wholly-owned subsidiaries including ZENNER Connect GmbH (formed in August 2023 via the merger of Minol ZENNER Connect and ZENNER Hessware) and Zenner USA, and distributes products and solutions across more than 100 countries via direct sales and regional partner networks. The company employs between 1,001 and 5,000 people, holds a board seat and multiple chair positions in the LoRa Alliance, and reports more than 450 IoT projects and 350+ digitalization projects completed across municipal, utility, and industrial customers.

Name

Minol Zenner

Legal name

Zenner International GmbH & Co. KG

Website

https://zenner.com

Company type

Private

Founded year

1923

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Zenner International, part of the Minol-ZENNER Group, is a German manufacturer of smart water, heat, and gas meters, IoT sensors, and the B.One digital ecosystem, serving utilities, municipalities, real estate, and industrial customers across 100+ countries.

Ownership category

akta.pro rank

Headquarters

HQ city

Saarbrücken

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Smart Meter Hardware Sales: Sale of water meters, heat/cooling meters, gas meters, and sensors. ZENNER is one of the largest gas meter manufacturers globally, producing over five million gas meters annually. Products range from residential to industrial/commercial meters.
2. Communication Modules and IoT Hardware: Sale of communication modules (M-Bus, Wireless M-Bus, LoRaWAN), gateways, and IoT hardware components for remote reading and smart metering applications.
3. B.One Metering as a Service (MaaS): Comprehensive service offering enabling cost-effective remote meter reading without additional infrastructure investments. Allows implementation of additional smart applications including flood protection solutions.
4. IoT Platform and Software Solutions: B.One Element Suite IoT platform and related software solutions for data collection, analysis, and water network monitoring.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

ZENNER is a global manufacturer of water, heat/cooling, and gas meters combined with IoT communication technologies (LoRaWAN, Wireless M-Bus, M-Bus, NB-IoT). Through its B.One digital ecosystem it delivers smart metering hardware, IoT platforms, and Metering-as-a-Service for utilities, real estate, and municipalities.

Product overview

Minol Zenner (operates as ZENNER International) is a global manufacturer of measurement technology offering water meters, heat and cooling energy meters, gas meters, IoT sensors, and digital solutions. The product portfolio includes multi-jet, positive displacement, piston-type, and ultrasonic water meters (residential and bulk), thermal energy meters under the zelsius C5 series, and diaphragm/industrial gas meters under the Atmos brand. Communication technologies include LoRaWAN, Wireless M-Bus, wired M-Bus, and NB-IoT. The B.One digital ecosystem combines these hardware products with the B.One IoT platform and Metering as a Service offerings to enable end-to-end digitization for municipalities, utilities, real estate companies, and industrial customers across more than 100 countries.

Differentiator

Problem solved

Functional benefit

Brands

• Atmos: Brand for diaphragm gas meters including Atmos, Atmos HP, and smart gas meter products
• B.One
• Minomess
• Minolist
• zelsius
• caltos
• EASY PROTECT
• Blocker
• ZENNER Connect

Products and services

• Water Meters (Multi-Jet, Positive Displacement, Piston, Ultrasonic, Woltman) Comprehensive range of water meters including multi-jet, positive displacement, piston-type, ultrasonic, and Woltman bulk meters for cold and hot water measurement in residential, commercial, and industrial applications.
• Heat and Cooling Energy Meters (zelsius C5 series) Thermal energy meters including zelsius C5-IUF, C5-CMF, and C5-ISF B.One variants with ultrasonic, measuring capsule, and single-jet flow sensors for heating and cooling systems.
• Atmos Gas Meters Diaphragm and industrial gas meters under the Atmos brand including residential (G1.6-G6), commercial (G6-G25), smart meters with LoRaWAN/NB-IoT/GPRS connectivity, IC-card prepaid meters, and wide-range meters.
• IoT Sensors (CO2, Temperature/Humidity, Heat Cost Allocators, Smoke Detectors) Intelligent sensors including ZENNER CO2 Indicator B.One for indoor air quality, Indoor T+H sensor, caltos E electronic heat cost allocator, and EASY PROTECT smoke alarm, all with LoRaWAN or Wireless M-Bus interfaces.
• B.One Digital Solution Ecosystem Holistic digital ecosystem combining compatible measuring devices, open radio standards (LoRaWAN, Wireless M-Bus), and high-performance data platforms for end-to-end digitization across energy, real estate, industry, and municipalities.
• B.One Metering as a Service (MaaS) Cost-effective service enabling water utilities to implement digital remote meter reading without additional infrastructure investments, with capability to integrate additional sensors and flood protection solutions.
• LoRaWAN Gateways ZENNER LoRaWAN gateways enabling customers to build their own scalable IoT networks for smart metering and smart city applications.
• Communication Modules (EDC, PDC) B.One communication modules including EDC (M-Bus interface with electronic pulse output) and PDC (pulse data capture) modules with LoRaWAN or Wireless M-Bus interfaces for connecting ZENNER meters.
• EVC (Electrical Volume Corrector) Intelligent integrated gas volume corrector that dynamically tests temperature and pressure, performs automatic compensation and compression factor correction.
• LoRaWAN Network Services Minol-ZENNER Group operates the world's largest LoRaWAN network with over 11 million active sensors and network availability in 15 countries.
• IUWS B.One (Ultrasonic Residential Water Meter) First ultrasonic residential water meter with 'parallel radio' function transmitting measurement data simultaneously via LoRaWAN and Wireless M-Bus.
• IUW (Ultrasonic Bulk Water Meter) Ultrasonic bulk water meter for use in drinking water distribution and industrial applications with high flow rate measurement capability.
• IoT Indoor Air Quality Solution Joint solution with Actility and DataCake for monitoring environmental characteristics inside buildings that may affect human health, comfort, or work performance.

Quantifiable outcome

• Water distribution systems in Europe lose around 50 litres of water per capita daily - smart meters enable early leak detection to reduce this loss
• +2 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature6 records

Partnerships

Four partnerships are on record, tiered core and minor.

• FAST GmbHcoreStrategic or Co-development PartnerZENNER and FAST GmbH have pooled their strengths to develop an adaptive solution for digital water network monitoring. FAST brings 40 years of expertise in acoustic leak detection with BIDI LoRa loggers, while ZENNER provides the B.One Element Suite IoT platform. The partnership creates a complete modular system for monitoring pipe network conditions, detecting leaks, and pinpointing their precise location using acoustic analysis integrated with LoRaWAN transmission.
• LoRa AlliancecoreStrategic or Co-development PartnerZENNER has been a member of the LoRa Alliance since its early years. The company holds a seat on the Board of Directors with responsibility as Treasurer, and chair positions of the Certification Committee, the Smart Cities and Buildings Working Group, and the Device and Solution Makers Forum. ZENNER operates the world's largest LoRaWAN network and contributes extensively to the further development of the open LoRaWAN wireless standard.
• Brunata A/SminorStrategic or Co-development PartnerJoint presentation at Smart City Expo World Congress 2023 at the LoRa Alliance booth, showcasing latest Smart City & Smart Building use cases and references under the motto 'Building our future together'.
• GP JOULEminorStrategic or Co-development PartnerPartnership featured in ZENNER News Edition 2/2020, providing insight into topics of e-mobility and hydrogen. GP JOULE operates in Northern Germany and represents ZENNER's ecosystem approach.

Scale indicators8 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Itron: Global leader in water, gas, and electric smart metering with networked IoT platforms (including LoRaWAN-based solutions); directly comparable to ZENNER across hardware-to-software metering stack, utility customer base, and AMI network operations.
• Diehl Metering: German-headquartered manufacturer of water, heat, gas and electricity meters with IZAR radio/IoT platform; the closest geographic and product-line competitor to ZENNER in smart submetering and communication technology.
• Kamstrup: Danish manufacturer of smart heat, cooling, water and electricity meters with READy/OMEGA IoT platform; comparable to ZENNER in ultrasonic metering technology, European utility customer base, and platform-enabled remote reading.
• Landis+Gyr: Global smart metering and grid management provider operating across electricity, gas, water and heat; comparable to ZENNER in AMI rollouts, IoT connectivity, and large-scale utility network operations.
• Badger Meter: US-based manufacturer of flow measurement and smart water metering solutions (BEACON, Modbus/LoRa endpoints); directly comparable to ZENNER in intelligent water metering for municipal utilities with cellular and LPWAN connectivity.
• Sensus (Xylem): Xylem's smart metering arm providing AMI solutions for water, gas and electricity utilities; comparable to ZENNER in FlexNet communication networks, endpoint devices, and managed meter data services.
• Techem: German provider of submetering and consumption-based billing for heat, water and energy in residential real estate; comparable to Minol/ZENNER in billing services, heat cost allocation, and property-manager customer base.
• ista: Global submetering and energy services company specializing in heat, water and energy consumption billing for housing industry; directly comparable to Minol-ZENNER's consumption-based billing business and real estate customer segments.
• Brunata: Danish-German submetering and heat cost allocation provider for residential and commercial real estate; mentioned as a ZENNER LoRa Alliance co-presenter, and directly comparable in heat cost allocators and consumption-based billing.

Broad incumbents

• Honeywell Building Technologies: Diversified industrial conglomerate offering smart metering, building management and IoT solutions including utilities-facing products; comparable in building automation, energy submetering, and adjacent IoT connectivity but at much broader portfolio scale than ZENNER.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 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

Profiles8 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments1 record

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

Frequently asked questions about Minol Zenner