STADTWERK AM SEE

What STADTWERK AM SEE does

STADTWERK AM SEE is a municipal multi-utility company headquartered in Überlingen, Germany, founded in 2012 from the merger of Technische Werke Friedrichshafen and Stadtwerke Überlingen, and legally organized as Stadtwerk am See GmbH & Co. KG. The company operates a regulated multi-utility platform spanning electricity, natural gas, water (sourced from Lake Constance), district heating, telecommunications (via wholly-owned subsidiary TeleData GmbH), fiber/broadband, e-mobility charging, and photovoltaic solutions, with additional revenue from parking facilities, public transport, and a 24/7 network control center. It serves residential customers, commercial/industrial accounts, housing companies, municipalities, and other energy utilities in the Bodenseekreis district of southern Germany.

The underlying technology stack includes a multi-utility infrastructure management platform, smart metering/intelligent measurement systems, LoRaWAN network infrastructure, a browser-based GIS Geoportal for municipal infrastructure transparency, GreenGate GS mobile maintenance management software, and the proprietary EnergyFiberDock — a modular, VDE-certified unit combining power, gigabit fiber, WLAN, and LoRaWAN-based smart metering targeted at harbors and campsites. Customer-facing technology includes a self-service online portal (Mein Portal), online tariff calculators, and 24/7 outage hotlines.

The business model is a hybrid of regulated network operations (network fees, regulated tariffs) and subscription-based energy supply (electricity, gas, water, heat, telecom, e-mobility) with monthly or annual billing cadence. Additional revenue streams include transaction-based parking, professional technical and engineering services for municipalities/utilities, and a Genussrechte (citizen participation) capital instrument paying 3.5% to customers and 2.7% to others. The go-to-market combines physical customer centers in Friedrichshafen and Überlingen, a self-serve website and portal, a toll-free contact center, dedicated account managers for B2B/municipal clients, and a referral program (Weitersager) paying €100 per successful recommendation. Ownership is municipal: Friedrichshafen and Überlingen are core shareholders, with Frickingen (2013), Hagnau (2016), and Deggenhausertal (2020) joined via the SWSee Beteiligungsgesellschaft.

Name

STADTWERK AM SEE

Legal name

Stadtwerk am See GmbH & Co. KG

Website

https://www.stadtwerk-am-see.de

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

STADTWERK AM SEE is a municipal multi-utility company serving the Bodenseekreis region of Germany, providing electricity, gas, water, district heating, telecommunications, e-mobility, and technical services to residential, commercial, and municipal customers via regulated network operations and subscription tariffs.

Ownership category

akta.pro rank

Product category

Multi-Utility Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Electric Power Distribution (221122)

SIC

Gas & Other Services Combined (4932), Water Supply (4941)

akta.pro primary industry

Gas Flow Measurement & Remote Metering Operations (Flow Computers, EFM) (EUAJAFAF)

akta.pro secondary industries

Hard Services (MEP/HVAC, Electrical, Plumbing) (BPABAAAA), Building Management & Facility Control Systems (BMS/BAS, Power Monitoring, EPMS) (EUAEAFAJ)

Keywords

• Multi-utility services
• Electricity and gas supply
• Water and district heating
• Telecommunications and broadband
• Municipal energy infrastructure

Headquarters

HQ city

Überlingen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Energy Supply (Strom, Gas): Sale of electricity and natural gas to residential, commercial, and industrial customers through various tariff plans. The company offers fixed-price and variable tariffs, including eco-friendly options.
2. Network Operations: Operation and maintenance of electricity, gas, and water distribution networks in the Bodenseekreis region. Revenue derived from network fees and regulated tariffs.
3. Heat/District Heating (Wärme): Supply of heating energy including district heating solutions for residential and commercial buildings.
4. Water Supply: Potable water supply to households and businesses in Friedrichshafen and Überlingen. Water sourced from Lake Constance.
5. Telecommunications (Internet, Phone, TV): Broadband internet, telephone, and TV services through their TeleData subsidiary.
6. Parking Facilities: Operation of eight parking structures at attractive locations in the Lake Constance region.
7. Technical Services: Engineering and technical services for municipalities and other utilities including network planning, construction, maintenance, and operational management of energy and water infrastructure.
8. eMobility: Charging infrastructure and services for electric vehicles including public charging stations and solutions for residential and commercial properties.
9. Citizen Participation (Bürgerbeteiligung): Investment instruments (Genussrechte) offering annual interest rates of 3.5% for customers and 2.7% for others, providing capital from citizens.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels8 records

Core offering

STADTWERK AM SEE is a municipal multi-utility company supplying electricity, natural gas, district heating, water, telecommunications (internet, phone, TV), e-mobility charging, and parking services to residential, commercial, and municipal customers in the Bodenseekreis region of southern Germany. The company also operates electricity, gas, and water distribution networks and offers technical engineering services including the proprietary EnergyFiberDock modular infrastructure solution.

Product overview

STADTWERK AM SEE is a multi-service regional utility company serving the Lake Constance area (Bodenseekreis), offering a comprehensive portfolio of energy and infrastructure services. The core offering consists of regulated utility services (electricity, natural gas, water supply, district heating) combined with telecommunications (internet, telephone, TV), e-mobility solutions, and photovoltaic systems. The company operates technical infrastructure (power grids, gas networks, water networks, fiber/broadband) and maintains customer-facing platforms including the Kundenportal (customer portal) and GRÜNE KARTE (loyalty program). For municipalities and businesses, it provides technical engineering solutions (Technik-Lösungen platform) including network planning, construction, operations management, and specialized products like the EnergyFiberDock for harbors and camping sites. The company also operates parking facilities and public transportation services, demonstrating a diversified utility portfolio that extends beyond traditional energy supply.

Differentiator

Problem solved

Functional benefit

Brands

• GRÜNE KARTE: Kundenkarte mit Rabatten für öffentliche Verkehrsmittel und regionale Partner in der Bodenseeregion.
• EnergyFiberDock
• SWSee Beteiligungsgesellschaft

Products and services

• Stromtarife (Electricity Tariffs) Electricity supply tariffs for residential customers including fixed-price options (ÖKO FIX STROM, MIX FIX STROM), eco options (ÖKO OK STROM, ÖKO REGIO STROM, ÖKO FLEX STROM, ÖKO BASIS STROM), heat pump electricity (HEIZ STROM), and replacement supply.
• Erdgas (Natural Gas) Natural gas supply tariffs for residential customers including FIX GAS 12, ÖKO 10 GAS, ÖKO KLIMA GAS, BASIS GAS, and replacement supply.
• Wärme (District Heating) District heating solutions and warmth services for residential and commercial customers.
• Internet, Telefon & TV Telecommunications services including internet, telephone, and television services provided through the TeleData GmbH subsidiary.
• eMobilität (E-Mobility) Electric mobility solutions including public charging stations and charging concepts for residential, commercial, and municipal customers.
• Photovoltaik / Energiedach Photovoltaic solutions and solar energy systems for residential and commercial customers.
• Wasser (Water) Potable water supply to households and businesses in Friedrichshafen and Überlingen, sourced from Lake Constance.
• Parkhäuser (Parking Facilities) Operation of eight parking structures at attractive locations in the Lake Constance region, including in Friedrichshafen and Überlingen.
• Business Tarife (Business Electricity/Gas) Electricity and gas supply tariffs specifically designed for commercial and business customers, including ÖKO FIX STROM, MIX FIX STROM, ÖKO OK STROM, ÖKO REGIO STROM, ÖKO BASIS STROM, BUSINESS STROM, FIX GAS 12, ÖKO 10 GAS, BASIS GAS, and BUSINESS GAS.
• Technik-Lösungen (Technical Solutions) Comprehensive engineering and technical services for municipalities and other utilities including power grid planning and construction, gas infrastructure, water supply systems, control center operations, fiber and broadband, network documentation, and infrastructure maintenance.
• EnergyFiberDock Modular infrastructure solution for harbors and campsites combining power supply, gigabit fiber connectivity, WLAN, and LoRaWAN-based meter reading in a single unit with VDE-certified technology and IP44 weatherproof rating.
• Wohnungswirtschaft (Housing Industry Solutions) Energy solutions and services specifically for housing companies and property management, including energy supply, e-mobility charging concepts, heating and operating cost accounting, and technical solutions.
• Kommunen (Municipal Services) Services for municipalities including heating solutions, e-mobility concepts, technical solutions, event infrastructure (power and water for events), and participation opportunities.
• Bürgerbeteiligung (Citizen Participation) Investment opportunity (Genussrechte) for citizens offering 3.5% annual interest rate for customers and 2.7% for others, allowing local participation in the utility.

Quantifiable outcome

• 99.999% grid availability for electricity
• +1 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Gemeinde DeggenhausertalcoreStrategic or Co-development Partner · 1 January 2020Municipal shareholder via SWSee Beteiligungsgesellschaft since 2020. Partnership for energy transition and local service.
• Gemeinde HagnaucoreStrategic or Co-development Partner · 1 January 2016Municipal shareholder via SWSee Beteiligungsgesellschaft since 2016. Direct participation in Stadtwerk am See operations.
• Gemeinde FrickingencoreStrategic or Co-development Partner · 1 January 2013Municipal shareholder via SWSee Beteiligungsgesellschaft since 2013. Partnership on equal footing enabling community participation in the successful utility.
• Regional Partners for EnergyFiberDockcoreTechnology or IntegrationRegional partners for mechanical manufacturing, switchgear construction, and network operation of the EnergyFiberDock modular infrastructure solution. Emphasizes quality, reliability, and short distances.
• TeleData GmbHcoreTechnology or IntegrationTelecommunications subsidiary handling fiber optic and broadband services. Located at Kornblumenstraße 7, Friedrichshafen.
• Hehner Reus Systems GmbHcoreTechnology or IntegrationWebsite CMS provider (GIPS project) and hosting partner. Located in Cologne, Germany. Provides statistical analysis tools.
• GarbesminorImplementation/ SI/ Consulting PartnerTraining partner for practical safety training for electrical installers in collaboration with Stadtwerk am See's training facilities.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Technische Werke Friedrichshafen (TWF): Predecessor entity that merged into Stadtwerk am See in 2012; now operates independently again as a regional multi-utility in Friedrichshafen-area adjacent services. Directly comparable regional municipal utility structure.
• Stadtwerke Überlingen: Other predecessor entity from the 2012 merger; today operates as a separate municipal utility serving Überlingen. Identical regulatory and ownership model as Stadtwerk am See.
• Regionalwerk Bodensee GmbH & Co. KG: Network operator partner and jointly controlled subsidiary of Stadtwerk am See; operates regional distribution grids. Shared infrastructure model makes it the closest operational peer.
• TeleData GmbH: Wholly-owned telecommunications subsidiary of Stadtwerk am See providing fiber, broadband, and TV services. As a fiber-to-the-home operator in the same region, comparable to municipal telecom utilities like NetCologne or M-net.

Broad incumbents

• EnBW Energie Baden-Württemberg: Dominant integrated utility in Baden-Württemberg; competes in retail electricity and gas across the same geography as Stadtwerk am See but at vastly larger scale with generation, trading, and grid assets.
• Stadtwerke München (SWM): Germany's largest municipal multi-utility; demonstrates the upper bound of municipal utility scaling with electricity, gas, district heating, tram, telecom (M-net), and public transport under one roof.
• E.ON Energie Deutschland: Major national retail electricity/gas supplier actively competing for customers in liberalized German energy markets; sets competitive pricing benchmarks for regional utilities like Stadtwerk am See.

Regional players

• Energieversorgung Oberschwaben-Allgäu (EnO): Neighboring regional multi-utility serving the Oberschwaben-Allgäu area, directly adjacent to the Bodenseekreis. Closely comparable municipal multi-utility business model with electricity, gas, water, and heat.
• Stadtwerke Konstanz: Municipal multi-utility serving the city of Konstanz directly across Lake Constance from Stadtwerk am See's territory. Comparable portfolio of electricity, gas, water, telecom, and mobility services.

Others

• Kiwigrid: Energy data and smart-meter integration partner listed in Stadtwerk am See's privacy policy. Comparable as an enabling technology layer for utilities operating smart metering and consumer energy management.

Market position

Strengths4 records

Weaknesses1 record

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCYBbBLxG73_V8GpIFQvDrMQ
• Facebookfacebook.com/stadtwerkamsee
• LinkedInlinkedin.com/company/stadtwerk-am-see
• Instagraminstagram.com/stadtwerkamsee
• Xx.com/STADTWERKAMSEE

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries2 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 STADTWERK AM SEE