What Stadtwerke Ettlingen does

Stadtwerke Ettlingen GmbH is a municipal utility (Stadtwerke) wholly owned by the City of Ettlingen, founded in 1862 as a gas plant for street lighting and now operating as an integrated multi-utility provider across electricity, natural gas, drinking water, district heating, broadband fiber, and street lighting. The company serves residential, commercial, industrial, and municipal customers in Ettlingen and surrounding municipalities including Durmersheim, Malsch, Schöllbronn, Rheinstetten, and Kuppenheim, with subsidiaries SWE Netz GmbH (network operations) and Gasversorgung Malsch-Durmersheim GmbH (regional gas supply).

The core technology stack centers on municipal utility infrastructure — distribution networks for electricity (100% hydropower, TÜV-certified), natural gas (with optional 10% biogas blend), drinking water sourced from the Upper Rhine Graben aquifer (>2 million m³ annually), and a growing low-temperature district heating (Nahwärme) network powered by groundwater heat, large-scale heat pumps, and sewage heat recovery. Proprietary infrastructure includes a Trinkwasserkraftwerk (drinking water turbine generating ~3,000 kWh/year), multi-sparten (multi-utility) house entry systems, heat quantity meter (Wärmemengenzähler) services for transparent billing in multi-family buildings, and management of approximately 7,200 street lamps. Product portfolio spans electricity tariffs (SWE-RegioStrom, SWE-NachtStrom, SWE-WärmeStrom, SWE-AutoStrom, dynamic tariff), gas tariffs (SWE-RegioGas, SWE-BioGas10), heat contracting (up to 20-year terms), broadband fiber connections, EV charging via the e-laden regional Verbund, the Ettlinger Bäder (baths) complex, and the Buhlsche Mühle conference and event center.

The business model is anchored in consumption-based subscription tariffs — 11 monthly advance payments with annual settlement — for residential and commercial energy and water supply. Heat contracting and network services operate as managed-services engagements with multi-year recurring revenue, while the baths, conference center, and broadband connections generate transaction and one-time fees. Go-to-market is direct-to-consumer for residential customers (via online tariff calculators, customer portal, in-person customer center, and a referral program) and direct enterprise sales for heat contracting and infrastructure projects. The company reinvests surpluses into local infrastructure rather than distributing to external shareholders, retaining 68–88 cents of every euro spent within the Ettlingen region.

Name

Stadtwerke Ettlingen

Legal name

Stadtwerke Ettlingen GmbH

Website

https://sw-ettlingen.de

Company type

Private

Founded year

1862

Operating status

Operating

Headcount range

101–250 employees

Short description

Stadtwerke Ettlingen is a municipal utility wholly owned by the City of Ettlingen, Germany, providing electricity (100% hydropower), natural gas, drinking water, district heating, broadband fiber, street lighting, and event/baths facilities to residential, commercial, and municipal customers across Ettlingen and surrounding municipalities.

Ownership category

akta.pro rank

Product category

Municipal Utility Services (Energy, Water, and District Heating)

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Water Supply and Irrigation Systems (221310), Steam and Air-Conditioning Supply (221330)

SIC

Electric Services (4911), Electric, Gas & Sanitary Services (4900), Water Supply (4941)

akta.pro primary industry

DER Program Operations & Customer/Installer Enablement (Applications, Portals, Inspections) (EUADALAO)

akta.pro secondary industries

Telemetry, Metering & Measurement & Verification (M&V) for Flexibility (EUAFAHAJ), DER Grid Services & Market Enablement (Ancillary Services, Flexibility) (EUADALAK), Interconnection, Permitting & Grid Services for DERs (EUAMAJAH)

Keywords

• Municipal utility services
• Electricity supply
• District heating network
• Drinking water supply
• Natural gas supply

Headquarters

HQ city

Ettlingen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Supply (Strom): Supply of 100% renewable electricity (hydropower) to private and commercial customers in Ettlingen and the region. Revenue generated through consumption-based tariffs with 11 monthly advance payments and an annual billing cycle.
2. Natural Gas and BioGas Supply (Erdgas/BioGas): Supply of natural gas with optional 10% biogas blend (SWE-BioGas10) to residential and commercial customers in Ettlingen, Durmersheim, and Malsch. Revenue from consumption-based tariffs.
3. District Heating (Wärme/Nahwärme): Supply of heating via an expanding district heating network. Revenue based on consumption (price per kilowatt-hour), a capacity-based basic fee, and an annual meter reading fee.
4. Drinking Water and Wastewater (Wasser): Supply of drinking water sourced from the Upper Rhine Graben aquifer. Revenue from consumption-based water tariffs and wastewater fees.
5. Heat Contracting (Wärmecontracting): SWE designs, builds, finances, operates, and maintains heating plants for buildings. Customers pay a contracted price per kilowatt-hour plus a basic capacity fee and annual meter fee. Contract terms of up to 20 years are offered. Revenues are recurring over multi-year contract periods.
6. Heat Metering Service (Wärmemengenzähler-Service): Installation and servicing of calibrated heat meters for transparent and legally compliant heating cost billing in multi-family buildings. Revenue from device purchase or rental and annual meter reading fees.
7. Operation of Public Baths (Ettlinger Bäder): Operation of outdoor pools, an indoor pool with sauna, and a natural lake. Revenue from admission fees to Albgau-Hallenbad, Albgaubad-Freibad, Waldbad Schöllbronn, and Badesee Buchtzig.
8. Buhlsche Mühle Event and Conference Centre: Operation of the historic Buhlsche Mühle as a conference and events venue with six conference rooms, a banquet hall, catering kitchen, and guesthouse. Revenue from room rentals and event bookings.
9. Network Services (SWE Netz GmbH): Planning, construction, and operation of electricity, gas, and water distribution networks. Services include multi-utility connections, inspection and maintenance of energy supply installations, street lighting, and broadband fiber connections.
10. Broadband/Fiber Network Connection: Connection of properties to the broadband/fiber network, including construction of house connections and installation of conduits for future fiber connectivity. Revenue from connection fees.

Pricing tiers

Go-to-market motion1 record

Distribution channels6 records

Marketing channels8 records

Core offering

Stadtwerke Ettlingen GmbH is a municipal utility supplying electricity (100% hydropower), natural gas and biogas, drinking water, and district heating (Nahwärme) to residential, commercial, and municipal customers in Ettlingen, Durmersheim, and Malsch. The company additionally operates a fiber broadband network, manages approximately 7,200 street lamps, provides heat contracting services (planning, building, financing, operating heating plants for buildings up to 20 years), and runs the Ettlinger Bäder public baths and Buhlsche Mühle conference center. Its technical subsidiary SWE Netz GmbH handles network planning, construction, and maintenance of electricity, gas, water, and broadband infrastructure.

Product overview

Stadtwerke Ettlingen (SWE) is a municipal utility company offering an integrated portfolio of energy and water services. The product portfolio includes electricity products (SWE-RegioStrom from hydropower, night electricity, heat pump electricity, EV charging electricity, dynamic tariffs), natural gas products (regional gas, 10% biogas blend, vehicle CNG), and district heating services with ongoing expansion. Core services encompass drinking water/wastewater, broadband fiber network expansion, street lighting management, heating contracting, and building energy consulting. The company operates as a platform providing essential utility infrastructure and related services to residential, commercial, and municipal customers in Ettlingen, Durmersheim, and Malsch.

Differentiator

Problem solved

Functional benefit

Brands

• SWE-RegioStrom: Green electricity tariff sourced from hydroelectric power
• SWE-RegioGas
• SWE-BioGas10
• SWE-WärmeStrom
• SWE-StadtStrom
• SWE-AutoStrom
• SWE-NachtStrom
• SWE-Wärmecontracting
• SWE-Zukunftspreis
• SWE-Ehrenamtspreis
• SWE-Ehrenamtspreis
• Buhlsche Mühle
• Ettlinger Bäder
• Nahwärme
• STADTWERKEdirekt

Products and services

• SWE-RegioStrom 100% hydropower-sourced electricity product certified by TÜV Nord CERT GmbH, with a price guarantee until 31 December 2026. Offered with 11 monthly installment payments and annual billing. Available to residential and commercial customers in Ettlingen and surrounding region.
• SWE-RegioGas Regional natural gas supply product for residential and commercial customers in Ettlingen, Durmersheim, and Malsch. Priced via online tariff calculator with 11 monthly installment payments.
• SWE-BioGas10 Special natural gas tariff with 90% natural gas and 10% biogas blend, with CO2 levy included. Enables customers to fulfill approximately two-thirds of the EWärmeG (Baden-Württemberg Renewable Heat Act) requirements. Available in Ettlingen, Durmersheim, and Malsch.
• Nahwärme (District Heating) District heating network supplying hot water to buildings through underground pipes. Uses renewable heat sources including groundwater heat pumps, sewage heat recovery, wood pellets, and biogas. Currently expanding in Ettlingen Mitte, West, Nord, and Schöllbronn areas. Pricing based on consumption (per kWh), a capacity-based basic fee, and an annual meter fee.
• SWE-Wärmecontracting (Heat Contracting) Full-service heating solutions where SWE plans, builds, finances, operates, and maintains heating systems for properties. Includes BHKW (combined heat and power) and gas condensing boiler options. Customers pay a contracted price per kWh of heat consumed, a capacity-dependent basic fee, and an annual meter fee. Contract terms up to 20 years. Suitable for property owners, housing cooperatives, and public institutions.
• Wärmemengenzähler-Service (Heat Meter Service) Installation and servicing of calibrated heat meters for transparent and legally compliant heating cost billing in multi-family buildings. Provides annual, monthly, or hourly data evaluation of heating system performance. Options include device purchase or rental, with a 5-year warranty. Suitable for large multi-family buildings where annual savings can reach tens of thousands of euros.
• Trinkwasser/Abwasser (Drinking Water/Wastewater) Drinking water supply from deep wells in the Upper Rhine Graben aquifer, with certified climate-neutral delivery. Over 2 million m³ of drinking water supplied annually, with quality exceeding statutory requirements and suitable for baby food preparation. Includes wastewater management services.
• Breitbandanschluss (Broadband/Fiber Connection) Fiber optic network connection service for residential and commercial properties. Includes construction of house connections and installation of conduits for high-speed broadband. Revenue from one-time connection fees.
• Straßenbeleuchtung (Street Lighting) Street lighting management and operation including planning, installation, maintenance, and 24-hour emergency service. Manages approximately 7,200 street lamps across Ettlingen city center and districts, with optimized switching times and energy-efficient lighting deployment.
• Ettlinger Bäder (Public Baths) Operation of public swimming and wellness facilities including Albgau-Hallenbad (indoor pool with sauna), Albgau-Freibad (outdoor pool), Waldbad Schöllbronn, and Badesee Buchtzig (natural lake). Revenue from admission fees.
• Buhlsche Mühle (Conference and Event Centre) Operation of a historic mill converted into a modern conference and event center with six conference rooms, a banquet hall, catering kitchen, and guesthouse. Revenue from room rentals and event bookings for corporate clients, associations, and private events.
• SWE-AutoStrom (EV Charging Electricity) Electricity product for electric vehicle charging at Ettlingen charging stations, usable via the regional e-laden charging network. Integrated with stadtmobil carsharing's 20 electric vehicles and 20 charging stations across Ettlingen.
• Multi-Sparten-Hausanschluss (Multi-Utility Building Connection) Compact combined entry system for new buildings integrating electricity, gas, water, and broadband conduits in a single trench and wall penetration, reducing construction time and space requirements. Provided through SWE Netz GmbH to property developers and new construction projects.
• Building Energy Consulting (Gebäudeenergieberatung) Monthly energy consulting sessions held in cooperation with the Environment and Energy Agency Kreis Karlsruhe (UEA). Free for registered SWE electricity and gas customers. Advises on building energy efficiency, renovation, energy certificates, and current subsidy programs.
• Sanierungsfahrplan (Renovation Roadmap) 5% compliance option under EWärmeG (Baden-Württemberg Renewable Heat Act) for buildings when central heating systems are modernized. Issued as part of the building energy consulting service.
• Standrohrwasserzähler (Standpipe Water Meter) Rental service for portable water meters used at events or construction sites to measure water consumption. Part of the water network operations portfolio.
• Fahren mit Bio-Erdgas (Bio-CNG Fuel) Bio-natural gas fuel for CNG vehicles dispensed at the Seehof CNG station in Ettlingen. Part of the broader Bio-Erdgas (biomethane) product offering.

Quantifiable outcome

• 27,000 tonnes of CO₂ avoided annually through use of SWE's 100% hydropower electricity
• +3 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Netze BW GmbHcoreImplementation/ SI/ Consulting Partner · 10 January 2024Netze BW GmbH executes the broadband/fiber construction works in Ettlingen's commercial zones (starting with Ettlingen-West in January 2024), commissioned by Stadtwerke Ettlingen GmbH. The total project spans three construction phases with approximately 4,800 meters of trench and 75 house connections. Planned completion Q2 2025.
• Bürgerenergiegenossenschaft Region Karlsruhe/Ettlingen (BEG)coreStrategic or Co-development PartnerSWE co-founded the BEG in 2012. As of May 2020, approximately 30 PV installations with over 1.2 MW peak have been commissioned through this cooperative, contributing to citizen-owned renewable energy in the region.
• BBE Energie GmbHcoreStrategic or Co-development PartnerFounded in 2014 by Stadtwerke Bruchsal, Bretten, and Ettlingen to jointly advance renewable energy initiatives. Represents a bundled regional commitment to renewable energy development and climate protection across partner municipalities.
• Stadtwerke Bruchsal; Stadtwerke BrettencoreStrategic or Co-development PartnerMunicipal utility partners in the BBE Energie GmbH joint venture, combining resources for renewable energy development across the Bretten, Bruchsal, and Ettlingen region.
• Stadtmobil (Carsharing)minorStrategic or Co-development PartnerSWE cooperates with stadtmobil to operate a carsharing project in Ettlingen, partially funded by federal subsidies. The project includes 20 electric vehicles and 20 charging stations across Ettlingen and the region.
• Umwelt- und Energieagentur Kreis Karlsruhe (UEA)coreStrategic or Co-development PartnerExperts from the Kreis Karlsruhe environment and energy agency hold monthly consulting sessions at SWE offices, advising Ettlingen residents on building energy efficiency, renovation, energy certificates, and current subsidy programs. Service is free for registered SWE electricity and gas customers.
• POTEnT (Public Organisation Transform Energy Transition)minorStrategic or Co-development PartnerInter-European climate protection project in which SWE participates as a partner alongside seven other European municipalities. The partnership facilitates regular exchange on established local climate protection measures and the planning of citizen engagement actions across borders to achieve greater carbon reduction.
• Stadt Ettlingen (Climate Partnership Tandem with Epernay)minorStrategic or Co-development PartnerThrough the 'Tandem' climate partnership between Ettlingen and its French sister city Epernay, SWE participates in a climate information exchange for implementing energy and climate protection goals. A climate information mobile was put into service in 2019 for energy consulting in both regions.
• e-laden Verbund (Regional EV Charging Association)coreChannel Partner/ Reseller/ DistributorSWE participates in the 'e-laden' regional EV charging network together with partner municipal utilities, offering a unified charging infrastructure for electric vehicles across the region. EV owners can use charging cards from any participating utility at all member stations.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Stadtwerke Konstanz GmbH: Baden-Württemberg municipal utility offering electricity, gas, water, heat, and broadband to residential and commercial customers; comparable service breadth and municipal ownership structure.
• Mainova AG: Large Frankfurt-based municipal utility providing electricity, gas, water, and district heating; operates the same multi-utility model as SWE at materially larger scale, making it a relevant comparison point for unit economics and network operations.
• badenova AG & Co. KG: Regional energy and water utility serving the Freiburg/Baden region with a municipal-utility-style multi-offering portfolio including green electricity, gas, water, heat, and broadband.
• Stadtwerke Karlsruhe GmbH: Largest municipal utility in the Karlsruhe technology region, offering electricity, gas, water, district heating, and broadband. SWE sits within the broader Karlsruhe service area and competes for regional commercial customers and infrastructure projects.
• Stadtwerke Heidelberg GmbH: Comparable mid-sized municipal utility offering electricity, gas, water, and district heating in a Baden-Württemberg university city; serves a similar mix of residential, commercial, and public-sector customers with a comparable multi-utility model.
• Technische Werke Friedrichshafen GmbH: Mid-sized municipal utility in Baden-Württemberg providing electricity, gas, water, district heating, and broadband services; highly comparable multi-utility, multi-segment municipal operating model.
• Stadtwerke Bruchsal GmbH: Direct JV partner in BBE Energie GmbH; similarly sized municipal utility offering electricity, gas, water, and heat services in a neighboring Landkreis Karlsruhe municipality.
• Stadtwerke Bretten GmbH: Co-founder of the BBE Energie GmbH joint venture with SWE and Stadtwerke Bruchsal; comparable municipal utility serving a smaller Baden-Württemberg town with multi-utility offerings.

Emerging players

• Naturstrom AG: Renewable-focused electricity supplier with strong citizen-energy cooperative roots; competes with SWE in green electricity retail across Germany and overlaps with SWE's hydropower-sourced offering.

Broad incumbents

• EnBW Energie Baden-Württemberg AG: Regional incumbent energy company covering generation, transmission, distribution, and retail across Baden-Württemberg. SWE is a municipal counterpart within EnBW's broader footprint and participates in EnBW's Baltic 1 offshore wind project.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/stadtwerkeettlingen
• LinkedInde.linkedin.com/company/stadtwerke-ettlingen-gmbh
• Instagraminstagram.com/stadtwerkeettlingen
• TikToktiktok.com/@stadtwerke.ettlingen

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries3 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 Stadtwerke Ettlingen