What Minol Messtechnik does

Minol Messtechnik, operating commercially as Brunata Minol, is a German metering technology and building services company headquartered in Leinfelden-Echterdingen near Stuttgart and founded in 1948. Organized as Minol Messtechnik W. Lehmann GmbH & Co. KG and part of the Minol-ZENNER-Gruppe, the company serves the German housing and real estate industry (Wohnungs- und Immobilienwirtschaft) as well as private landlords, with consumption-based billing services for heating and water, and an expanding portfolio of ancillary property services including smoke detector maintenance (B.One Rauchwarnmelderservice), legionella testing, energy certificates, and e-mobility charging infrastructure.

The technical stack centers on the B.One unified IoT platform — branded around interoperability, technology openness, security, and reliability — that connects proprietary radio-enabled hardware (Minol Connect system, Minometer heat cost allocators, Funk-Wärmezähler, Funk-Wasserzähler, Minoprotect 4 Radio smoke detectors, PDC communication modules) with digital services including the Minol App, B.One eMonitoring, Cloud-to-Cloud data transfer, integrated operating cost billing, and sub-annual consumption information (UVI). The B.One family extends into sustainability solutions (B.One Eco, B.One Guide for building renovation, B.One Mieterstrom for tenant electricity/PV).

Minol operates a recurring-revenue model anchored by meter rental and maintenance services, annual heating cost billing, and bundled property services. Distribution is hybrid: direct enterprise sales to housing companies and large property portfolios, a self-service online portal (Minol direct) for private landlords, and a nationwide service partner network that handles physical installation, replacement, functional checks, and on-site meter reading. Marketing is concentrated in Germany through the corporate website, the lesewert blog, newsletter, and industry trade events.

Name

Minol Messtechnik

Legal name

Minol Messtechnik W. Lehmann GmbH & Co. KG

Website

https://minol.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

101–250 employees

Short description

Minol Messtechnik (Brunata Minol), founded 1948 in Germany, manufactures radio-enabled metering devices and delivers consumption-based heating, water, and property services for the German housing industry and private landlords via the B.One IoT platform.

Ownership category

akta.pro rank

Product category

Smart Metering and Heating Cost Billing Services

NAICS

Totalizing Fluid Meter and Counting Device Manufacturing (334514), Steam and Air-Conditioning Supply (221330)

SIC

Totalizing Fluid Meters & Counting Devices (3824), Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

Submetering & Multi-Unit Property Billing (MUDs, submeters, RUBS, landlord/tenant billing) (EUANAIAK)

akta.pro secondary industries

Home Energy & EV Charging (HEMS, Smart Meters, Batteries, Chargers) (HSAPAQAF), Smart Climate & Air Quality (Thermostats, HVAC, Purifiers, IAQ Sensors) (HSAPAQAD)

Keywords

• Heating cost billing
• Smart metering services
• Sub-metering devices
• Building IoT platform
• Consumption-based billing

Headquarters

HQ city

Leinfelden-echterdingen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Meter Rental Services: Rental service for measurement devices including installation, maintenance, and reading services - recurring revenue model
2. Heating Cost Accounting Services: Annual heating cost billing services from meter reading to fair cost distribution
3. Property Services: Additional services including smoke detector service, legionella testing, energy certificates, and e-mobility charging infrastructure management
4. Sustainable Property Solutions: Tenant electricity (Mieterstrom) programs, building renovation guidance, and PV integration services

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Minol Messtechnik (Brunata Minol) provides consumption-based billing and metering services for the German housing and real estate industry. The company manufactures and rents radio-enabled sub-metering devices (heat cost allocators, heat meters, water meters, smoke detectors) under the Minol Connect wireless system, and delivers annual heating cost accounting (Heizkostenabrechnung) and related property services such as smoke detector servicing, legionella testing, energy certificates, and e-mobility charging infrastructure. Its B.One platform integrates the metering hardware, cloud data transfer, and digital building services into a unified IoT ecosystem for landlords and property managers.

Product overview

Minol Messtechnik (Brunata Minol) is a metering technology and building services company offering a platform-plus-modules architecture centered on the B.One unified solution platform. The core offerings include Heizkostenabrechnung (heating cost billing) as the primary service, complemented by B.One-branded property services (smoke detector service, legionella testing, energy certificates, e-mobility) and sustainability solutions (B.One Eco, Mieterstrom/tenant electricity, B.One Guide building renovation). The company also manufactures and rents radio-enabled metering devices under the Minol Connect wireless system umbrella: Funk-Heizkostenverteiler (Minometer), Funk-Wärmezähler (heat meters), Funk-Wasserzähler (water meters), Funk-Rauchwarnmelder (Minoprotect 4 Radio smoke detectors), and PDC communication modules. Additional digital services include the Minol App, B.One eMonitoring, Cloud-to-Cloud data transfer, integrated billing, and the Minol direct online customer portal. The B.One platform connects all these IoT devices and services into an interoperable ecosystem for the residential and commercial property sector.

Differentiator

Problem solved

Functional benefit

Brands

• B.One: Integrated solution platform for smart energy, buildings, and IoT connecting measurement technology, energy management, and property services
• B.One Eco
• B.One Guide
• B.One Mieterstrom
• Minol Connect
• Minometer
• Minol direct

Products and services

• Heizkostenabrechnung (Heating Cost Billing) Professional annual heating cost billing service covering reading, consumption data collection, and fair cost distribution for residential and commercial properties. Targeted at the German housing and real estate industry (Wohnungswirtschaft) and private landlords.
• B.One Rauchwarnmelderservice (Smoke Detector Service) Service including installation, maintenance, and inspection of smoke warning devices in properties. Targeted at housing companies, property managers, and private landlords needing fire-safety compliance.
• B.One Legionellenprüfung (Legionella Testing) Legionella testing service for drinking water systems to ensure compliance with hygiene regulations. Targeted at property owners and housing operators.
• B.One Energieausweis (Energy Certificate) Energy certificate service providing required energy performance certificates for buildings. Targeted at property owners, landlords, and real estate operators.
• B.One Drive E-Mobility Electric mobility solution for properties including charging infrastructure services. Targeted at housing companies and property owners deploying EV charging on residential or commercial property.
• B.One Guide Gebäudesanierung (Building Renovation Planning) Building renovation guide service for planning energy-efficient building renovations, CO2 reduction, and property value preservation. Targeted at property owners and housing operators undertaking sustainability modernization.
• B.One Mieterstrom (Tenant Electricity) Tenant electricity solution providing a complete package for landlords from analysis to operation of photovoltaic projects. Targeted at property owners seeking to supply tenants with on-site solar electricity.
• Minol Connect Radio System Radio/wireless system enabling smart metering and IoT connectivity for property devices and sensors, supporting remote reading of consumption data from heat cost allocators, water meters, and other devices. Sold as part of the metering device portfolio to housing operators and landlords.
• Funk-Heizkostenverteiler (Minometer) Radio-enabled heat cost allocators (Minometer brand) for measuring and allocating heating costs in multi-family buildings. Used by housing operators and landlords for fair heating cost distribution.
• Funk-Wärmezähler (Radio Heat Meter) Radio-enabled electronic heat meters for accurate measurement of thermal energy consumption. Sold or rented to housing operators, property managers, and landlords.
• Funk-Wasserzähler (Radio Water Meter) Radio-enabled water meters for measuring water consumption with wireless data transmission. Sold or rented to housing operators and landlords.
• Funk-Rauchwarnmelder Minoprotect 4 Radio Radio-enabled smoke detectors (Minoprotect 4 Radio) for fire safety in residential properties. Sold or rented to housing operators and private landlords for smoke detector compliance.
• PDC Kommunikationsmodul Radio module enabling legacy meters with pulse output to transmit data wirelessly into the Minol Connect system. Sold to housing operators and landlords retrofitting older metering devices.
• Mietservice und Wartungsservice (Meter Rental & Maintenance Service) Rental and maintenance service for metering equipment including device installation, replacement, and servicing. Recurring revenue offering for housing operators and landlords who rent rather than buy metering hardware.
• Minol direct (Online Customer Portal) Online customer portal for accessing billing data, consumption information, and managing account services, with an integrated quote generator enabling private landlords to self-onboard to heating cost accounting services.

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• IPAI (Institut für Privacy & Auditing)coreStrategic or Co-development Partner · 1 July 2026Minol became a member of IPAI (Institute for Privacy & Auditing), underlining its commitment to actively shape digitalization in the real estate industry and demonstrate its standards for data privacy and security compliance.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Honeywell Smart Energy: Honeywell provides smart metering, building energy management, and submetering data platforms at global scale; while not a German submetering specialist, its portfolio overlaps with Minol's B.One platform in areas such as consumption analytics and energy data integration for real estate.
• Landis+Gyr Group AG: Landis+Gyr is a global smart-metering incumbent whose portfolio extends beyond electricity meters into heat and water submetering solutions; though larger and more electricity-focused, it competes for the same IoT-enabled, consumption-billing use cases Minol addresses in multi-family housing.
• Engie Solutions (ENGIE Deutschland): ENGIE is a broad energy and building services incumbent offering metering, submetering, and energy data management as part of larger multi-technical facility and energy-efficiency contracts; it competes with Minol for enterprise housing-company and property-services contracts in Germany.

Direct peers

• Kamstrup A/S: Kamstrup is a Danish smart metering specialist offering heat, water, and electricity meters with radio and IoT connectivity, competing with Minol across European submetering tenders and supplying similar solutions to housing associations and utilities.
• Diehl Metering GmbH: Diehl Metering produces heat, water, and electricity meters plus AMR/AMI communication solutions used by housing companies and utilities, making it a direct device and submetering competitor to Minol's Minol Connect and Minometer product lines.
• Qundis GmbH: Qundis specializes in radio-based heat cost allocators, heat meters, and water meters with cloud connectivity, competing head-to-head with Minol's Minometer and Minol Connect devices in the German and European submetering hardware market.
• ista SE: ista is one of the two largest German providers of submetering and consumption-based billing for heating and water in multi-family buildings, operating the same landlord/tenant billing, meter rental, and energy services model that anchors Minol's core Heizkostenabrechnung business.
• ZENNER International GmbH & Co. KG: ZENNER is the sister company within the Minol-ZENNER Group and itself manufactures heat, water, and gas meters and submetering solutions, offering an overlapping product portfolio that competes with Minol for OEM and utility customers across Europe.
• Techem Energy Services GmbH: Techem is the other dominant German submetering and heating-cost-billing specialist, offering radio heat cost allocators, heat and water meters, and landlord billing services that directly compete with Minol across the Wohnungswirtschaft and private landlord segments.

Regional players

• Sievert SE: Sievert operates a German building-services portfolio that includes metering and submetering-adjacent property services; though broader than Minol's submetering core, it intersects on the property-services and energy-data offerings Minol sells into the Wohnungswirtschaft segment.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/Minol_Mt

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Messtechnik