WSL Wohnen & Service Leipzig GmbH

What WSL Wohnen & Service Leipzig GmbH does

WSL Wohnen & Service Leipzig GmbH is a regional German housing-services company founded in 2000 as a 100% subsidiary of Leipziger Wohnungs- und Baugesellschaft mbH (LWB), the municipal housing company of Leipzig. The company provides consumption-based billing for heating costs, cold water, and waste sluice systems, supported by wireless consumption recording technology and remote monitoring of heating plants. It operates a one-stop service portfolio that also includes device rental and sale (Gerätevermietung/Gerätekauf), legally required six-year calibration services (Eichung), and full heat contracting (Wärmecontracting) covering planning, financing, installation, operation, and maintenance of heating central plants. Since 2004 WSL has operated more than 40 photovoltaic systems on LWB rooftops totaling 1.45 MWpeak capacity using mono-, multi-crystalline, and thin-film modules with inverters achieving up to 98% efficiency, with selected installations co-financed by the European Regional Development Fund (EFRE) in 2009. Customers are primarily Hausverwaltungen (property management companies) and Immobilienbesitzer (property owners) in the Leipzig region, with the LWB portfolio functioning as the anchor relationship and default demand pipeline. Revenue is generated through regulated recurring streams (annual heating cost billing, device rental with included calibration fees, heat contracting with base + working + measurement price components), one-time device sales passable through as an 11% annual modernization surcharge under §559 BGB, and managed PV operations. Distribution is exclusively direct, with the company's own service staff performing device installation and annual meter readings. The company has 6 employees, a single office at Schützenstraße 2, Leipzig, and is led by Geschäftsführer Heiko Sander and Kai Tonne.

Name

WSL Wohnen & Service Leipzig GmbH

Legal name

WSL Wohnen & Service Leipzig GmbH

Website

https://wsl-leipzig.de

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

WSL Wohnen & Service Leipzig GmbH is a regional Leipzig-based housing-services company and 100% subsidiary of LWB that provides consumption-based heating, cold water, and waste billing, device rental and calibration, heat contracting, and rooftop photovoltaic operations to property managers and owners.

Ownership category

akta.pro rank

Product category

Residential Property Utility Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Refrigeration & Service Industry Machinery (3580)

akta.pro industry

PRIMARYIMAIABAA

HVAC Installation, Service & Repair

Industrials, Manufacturing & Construction/Industrial Services & Facility Operations/Building Maintenance & Repair (MEP/HVAC/Plumbing/Electrical)

SECONDARYBPABAAAA

Hard Services (MEP/HVAC, Electrical, Plumbing)

Business & Public Services/Facilities Management & Building Services/Integrated Facilities Management (IFM)

SECONDARYEUAEAFAE

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration)

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Mechanical, Electrical & Plumbing (MEP) for Energy Facilities

Keywords

• Heating cost billing
• Cold water billing
• Heat contracting services
• Photovoltaic system operation
• Consumption-based metering

Headquarters

HQ city

Leipzig

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Heating Cost Billing Services: Consumption-based billing for heating and warm water costs for property management companies and property owners. Includes installation of distribution and measuring devices, reading services, and annual billing according to German Heating Cost regulations (Heizkostenverordnung).
2. Device Rental: Rental of distribution and measurement devices for consumption recording. Rental fees are passed through in heating cost bills per regulations. Includes guarantee and maintenance contracts with Eichgebühren (calibration fees) included in rental price.
3. Device Sales: Sale of distribution and measuring devices for consumption recording. Costs can be passed through as modernization surcharge (11% annually per §559 BGB). Includes guarantee maintenance contract for subsequent replacements.
4. Heat Contracting: Heat delivery contracting services including planning, investment/financing, installation, operation, maintenance and repair of heating plants. Property owners pay a heat price comprising annual base price, working price, and annual measurement price.
5. Cold Water and Waste Cost Billing: Consumption-based billing for cold water costs and waste costs through electronic waste locks that individually measure waste volumes.
6. Solar Energy Systems Operation: Operation of photovoltaic systems on residential buildings to stabilize operating costs and increase property attractiveness.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

WSL Wohnen & Service Leipzig GmbH provides consumption-based billing for heating, hot water, cold water, and waste costs to property management companies and property owners, including installation, rental and sale of distribution and measurement devices and legally required calibration. The company also delivers heat contracting services covering the planning, financing, installation, operation, and maintenance of heating central plants, and operates more than 40 rooftop photovoltaic systems with a total capacity of 1.45 MWpeak. All services are delivered regionally within Leipzig as a one-stop housing-services platform under its parent LWB.

Product overview

WSL Wohnen & Service Leipzig GmbH is a regional service company founded in 2000 as a 100% subsidiary of Leipziger Wohnungs- und Baugesellschaft mbH (LWB). The company offers a unified service portfolio centered on consumption-based cost accounting for housing properties, comprising the core services of Heizkostenabrechnung (heating cost billing), Kaltwasserabrechnung (cold water billing), and Müllschleusenabrechnung (waste cost accounting). These core services are supported by device rental and purchase programs for distribution and measurement equipment (Gerätevermietung/Gerätekauf), calibration services (Eichung), and remote monitoring via Funktechnik (radio technology) for consumption data capture. The Wärmecontracting (heat contracting) division extends the offering to comprehensive technical operational management including heat central plant financing, installation, and operation. The Solarstromanlagen (photovoltaic systems) division, operational since 2004, provides renewable energy solutions across 40+ installations totaling 1.45 MWpeak. The product architecture functions as a service-based model where device installation, reading, billing, and maintenance are integrated into continuous service contracts for property management companies and property owners.

Differentiator

Problem solved

Functional benefit

Products and services

• Heizkostenabrechnung (Heating Cost Billing) Consumption-based heating and hot water cost accounting service for residential properties, including installation of distribution and measurement devices, meter reading, and generation of legally compliant cost allocations per user under the German Heizkostenverordnung. Target customers are property management companies and property owners.
• Kaltwasserabrechnung (Cold Water Billing) Consumption-based cold water cost accounting service where 100% of cold water costs are distributed among users based on recorded consumption via installed water meters, supporting resource conservation for residential properties.
• Müllschleusenabrechnung (Waste Cost Accounting) Consumption-based waste cost accounting for existing waste sluice systems (Müllschleusen) that electronically record individual waste volumes, allowing waste disposal costs to be distributed among residents based on actual waste generation.
• Gerätevermietung (Device Rental) Rental service for distribution and measurement devices, including heat cost allocators, water meters, and heat quantity meters, with legal calibration fees (Eichgebühren) included in the rental price and maintenance contracts bundled in.
• Gerätekauf (Device Purchase) Sale of distribution and measurement devices with an optional modernization surcharge of 11% of costs annually under §559 BGB, plus optional maintenance warranty contracts for subsequent device replacements.
• Eichung (Calibration Services) Calibration and certification services for measurement devices including warm water meters, cold water meters, heat quantity meters, and electronic water meters, all of which require recalibration every 6 years under German calibration law (Eichgesetz/Eichordnung).
• Wärmecontracting (Heat Contracting) Technical operational management for heat delivery covering planning, investment/financing, installation, operation, maintenance, and repair of environmentally friendly heat central plants, with consumption-based billing at a price formula of annual base price + working price + annual measurement price. Customers are property owners and managers who want heat supply without capital outlay.
• Solarstromanlagen (Photovoltaic Systems) Operation of more than 40 photovoltaic systems on LWB rooftops with a total installed capacity of 1.45 MWpeak, using mono-, multi-crystalline silicon, and thin-film modules paired with inverters achieving up to 98% efficiency. The service stabilizes operating costs and increases the attractiveness of managed properties. Some systems were co-funded through the EU European Regional Development Fund (EFRE) in 2009.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Leipziger Wohnungs- und Baugesellschaft mbH (LWB)coreStrategic or Co-development Partner · 1 January 2000WSL is a 100% subsidiary of LWB, the Leipzig Housing and Construction Company. WSL provides comprehensive housing services for LWB's property portfolio including heating cost billing, device rental, heat contracting, and solar energy systems. WSL operates as the service partner of LWB, serving as the exclusive provider of these services for LWB-managed properties.

Scale indicators4 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• BRUNATA-METROMAX GmbH: German provider of submetering, consumption-based heating and water cost allocation, and metering device services for residential property managers. Highly comparable service offering to WSL, with national reach and strong position in property management segment.
• Minol Messtechnik W. Lehmann GmbH & Co. KG: German family-owned metering services company specializing in consumption-based billing, submetering devices, and energy services for housing and real estate. Overlaps directly with WSL's device rental, heating cost accounting, and calibration services.
• KALORIMETA AG & Co. KG: German metering services and submetering company providing heating cost allocation, water/waste billing, and heat contracting. Comparable service portfolio to WSL and competes in the same residential property management customer segment.
• Techem Energy Services GmbH: Germany's largest provider of heating cost and water billing, submetering device rental, and heat contracting for residential properties. Directly comparable to WSL across metering, billing, device rental, and heat contracting service lines, but operating at national scale versus WSL's regional focus.
• ista SE: Major German and European provider of consumption-based billing (heating, water), submetering devices, and energy services for real estate. Directly competes with WSL in heating cost billing, device rental, and meter reading services, with a much broader geographic footprint across Europe.

Regional players

• Stadtwerke Leipzig GmbH: Municipal multi-utility for Leipzig providing district heating, electricity, and gas to residential and commercial customers in the same region as WSL. Comparable in heat supply overlap but with broader energy utility operations; serves the same geographic market.

Others

• Leipziger Wohnungs- und Baugesellschaft mbH (LWB): WSL's parent company and primary customer - the largest municipal housing company in Leipzig. While not a direct competitor, LWB is the anchor that defines WSL's demand base and operating scope; relevant for understanding WSL's captive market and growth ceiling.
• ZWIK Wohnungswirtschaft Leipzig GmbH: Leipzig-based municipal housing management services company. Not a direct metering/heat contracting competitor, but adjacent ecosystem participant operating in the same regional housing market as WSL and its parent LWB.

Broad incumbents

• GETEC Group: German multi-utility providing heat/cooling contracting, energy supply, and energy management services to residential and industrial customers. Overlaps with WSL's heat contracting and energy supply capabilities, but at substantially larger scale and broader geographic footprint.
• Dalkia Deutschland GmbH: Large-scale German heat network operator and energy services provider, owned by EDF group. Competes with WSL in heat contracting and district heating, but at substantially larger scale and with a broader industrial/commercial focus beyond housing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks1 record

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/wsl-wohnen-&-service-leipzig-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 WSL Wohnen & Service Leipzig GmbH