Municipal Utilities Tuttlingen

What Municipal Utilities Tuttlingen does

Stadtwerke Tuttlingen GmbH (trading as swt / swtEnergie) is a vertically integrated municipal utility company owned by the City of Tuttlingen in Baden-Württemberg, Germany. Founded in 1974 with operational roots dating to 1896, the company serves as the local Grundversorger (default supplier) for the Tuttlingen region, delivering electricity, natural gas, district heating, drinking water, and fiber broadband to residential and commercial customers. The company operates the electricity, gas, water, broadband, and heating networks in its concession area, including Neuhausen ob Eck Take-off industrial park since 2000. Beyond utility services, swt operates the TuWass leisure and thermal bath (370,000 visitors in 2024), the Freibad outdoor pool, and the Parkhaus Zentrum/Rathaus parking facility through its wholly owned subsidiary Tuttlinger Bäder GmbH.

The company generates and procures energy from a diversified renewable portfolio including hydroelectric power (Ökostrom), wood-chip and wood-pellet biomass heating plants, wastewater heat recovery, and a ~10% stake in the Hegauwind Verenafohren wind park producing ~20 million kWh/year. Distribution volumes in 2024 totaled 238 GWh electricity, 129.1 GWh gas, 33.9 GWh district heating, and 2.07 million m³ water. Recent capital investments include a new biomass heating plant at Stadionstraße (2025), a wastewater heat pump commissioning (2026), and a dynamic exchange-based electricity tariff (swtut Strom Dynamisch, 2025). The company holds ISO 50001:2018 energy management certification, TÜV NORD eco-electricity certification, and TÜV Rheinland eco-gas certification.

Revenue mechanics are subscription-based recurring utility billing with monthly advance payments and annual settlement. The company operates a hybrid go-to-market model combining a physical customer service center at Bahnhofstraße 120, a 24/7 Kundenportal (customer portal), a Netzportal (network portal), and the swtEnergie+ mobile app. Customer segments span private households, commercial and business customers, and increasingly e-mobility and renewable energy adopters requiring PV, EV charging, battery storage, and heat pump registration services. A swtVIP Band loyalty program offers 15% discount at TuWass to Stadtwerke customers, creating cross-promotion between utility and leisure operations. 2024 revenue was €87.9 million with 215 total employees (165 swt + 50 Bäder).

Name

Municipal Utilities Tuttlingen

Legal name

Stadtwerke Tuttlingen GmbH

Website

https://swtenergie.de

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

11–50 employees

Short description

Stadtwerke Tuttlingen GmbH (swt) is a municipal utility owned by the City of Tuttlingen, Germany, supplying electricity, gas, district heating, drinking water, and fiber broadband to residential and commercial customers as the local Grundversorger, while also operating leisure facilities and parking in its concession area.

Ownership category

akta.pro rank

Product category

Municipal Utility Services

NAICS

Utilities (22), Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (221310)

SIC

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

akta.pro primary industry

Interconnection, Permitting & Grid Services for DERs (EUAMAJAH)

akta.pro secondary industry

Water Systems & Treatment (Pumps/Boilers/Water Heaters/Filtration) (IMAIABAK)

Keywords

• Municipal utility services
• Electricity and gas supply
• District heating network
• Drinking water supply
• Municipal leisure facilities

Headquarters

HQ city

Tuttlingen

HQ country

Germany

HQ region

Europe

Offices9 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Supply: Supply of electricity (including Ökostrom from hydroelectric) to residential and business customers in Tuttlingen and surrounding areas. 238 GWh electricity sales (2024). Revenue: 87.9 Mio Euro total company revenue.
2. Gas Supply: Natural gas supply including Ökogas (CO2-compensated) to private and commercial customers. 129.1 GWh gas sales (2024).
3. District Heating (Fernwärme): Sale of district heating from renewable sources (wood chips, heat pumps) to connected buildings. 33.9 GWh heat sold (2024).
4. Water Supply: Drinking water supply from own waterworks (Riedgraben, Tiefental) and external suppliers. 2.07 million m3 water sold (2024).
5. Swimming Facilities (TuWass & Freibad): Operation of TuWass leisure and thermal bath and the outdoor swimming pool (Freibad). 370,000 TuWass visitors and 61,000 Freibad visitors (2024). Gastronomy operations also run within facilities.
6. Parking (Parkhaus Zentrum/Rathaus): Operation of the Parkhaus Zentrum/Rathaus public parking garage. 53,500 parking customers (2024).
7. Network Operation: Operation of electricity, gas, water, broadband fiber, and heating networks. Digital meter management (Messwesen). Services for connecting new installations including PV, EV charging, heat pumps, and storage.
8. Wind Energy Participation: Revenue from approximately 10% stake in Hegauwind GmbH & Co.KG wind park, contributing to renewable energy portfolio and CO2 reduction goals.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels10 records

Core offering

Stadtwerke Tuttlingen GmbH (swt) is the municipal utility for Tuttlingen, Germany, supplying electricity (including Ökostrom from hydropower and a dynamic tariff), natural gas (including Ökogas with CO2 compensation), district heating (Fernwärme from renewable sources), and drinking water to residential and commercial customers. It also operates and supplies electricity, gas, water, fiber broadband, and heating networks, plus municipal leisure facilities (TuWass thermal bath, Freibad outdoor pool) and the Parkhaus Zentrum parking garage, with a 24/7 customer portal, network portal, and mobile app for digital self-service.

Product overview

Municipal Utilities Tuttlingen (Stadtwerke Tuttlingen GmbH, abbreviated swt) is a multi-utility provider offering electricity (Ökostrom from hydropower, plus a dynamic pricing tariff), natural gas (Ökogas with CO2 compensation), district heating (Fernwärme from renewable sources including wood chips and wastewater heat pumps), drinking water, fiber broadband, and metering services. The company operates the electricity, water, broadband, and heating networks in Tuttlingen and Neuhausen Take Off. It also manages leisure facilities including the TuWass thermal bath and the outdoor pool, plus the Parkhaus Zentrum parking garage. Online services include a 24/7 customer portal (Kundenportal) and network portal (Netzportal), along with the swtEnergie+ mobile app. E-mobility services cover Wallbox registration and charging infrastructure. The company holds an ~10% stake in the Hegauwind Windpark Verenafohren for renewable electricity generation. Key operational milestones include a 2025 wood chip heating plant expansion and a 2026 wastewater heat pump commissioning. Total revenue was €87.9 million in 2024 with 165 employees plus 50 bath staff.

Differentiator

Problem solved

Functional benefit

Brands

• swtEnergie+ App: Mobile application for customers to manage their energy accounts, view bills, and submit meter readings
• TuWass
• swtVIP Band

Products and services

• Ökostrom (Eco Electricity) Green electricity supply sourced from hydropower, offered to private households and business customers in Tuttlingen and surrounding area. Certified by TÜV NORD with regular verification.
• swtut Strom Dynamisch Tarif (Dynamic Electricity Tariff) Dynamic electricity tariff with hourly prices based on stock exchange prices, requiring an intelligent metering system (Smart Meter + Gateway). Suitable for customers with EVs, heat pumps, and storage systems.
• Ökogas (Eco Gas) Natural gas supply with 100% retroactive CO2 compensation, verified by TÜV Rheinland, offered to private and commercial customers for climate-conscious heating.
• Fernwärme (District Heating) District heating supplied through a ground-laid, insulated pipe network. Heat is generated from renewable sources including wood pellets, wood chips, and wastewater heat pumps, with compact house transfer stations including heat exchangers.
• Trinkwasserversorgung (Drinking Water Supply) Drinking water supply from own waterworks (Riedgraben and Tiefental) and external suppliers (Bodensee-Wasserversorgung). The Riedgraben waterworks produces 65% of Tuttlingen's drinking water.
• Netzbetrieb (Network Operations) Operation of electricity, water, broadband, and heating networks in Tuttlingen and Neuhausen Take Off, including metering services and network digitalization for the energy transition.
• Glasfaser (Fiber Broadband) Fiber optic network operation and services in Tuttlingen, enabling broadband connectivity through municipal infrastructure.
• Messwesen (Metering Services) Metering operations including installation of modern metering devices (digital electricity meters), intelligent measurement systems (Smart Meter + Gateway), and meter reading services across the network area.
• TuWass Freizeit- und Thermalbad Leisure and thermal bath facility operated by swt, featuring indoor pool, thermal pool, wave rider, and sauna. Received approximately 370,000 visitors in 2024.
• Freibad Tuttlingen Outdoor swimming pool operated by swt, open seasonally. Received approximately 61,000 visitors in 2024.
• Parkhaus Zentrum/Rathaus Public parking garage operated by swt at the city center/Rathaus location in Tuttlingen. Served approximately 53,500 parking guests in 2024.
• Windpark Verenafohren (Hegauwind) Wind energy generation through swt's approximately 10% stake in the Hegauwind wind park near Tengen, featuring three weak-wind turbines producing approximately 20 million kWh/year total and avoiding approximately 9,500 tonnes CO2 annually (swt's share: approximately 2 million kWh/year and 950 tonnes CO2 avoidance).
• Mieterstrom (Tenant Electricity) Tenant electricity program allowing residents to use solar energy generated from their own building, promoting local renewable energy consumption in multi-family housing.

Quantifiable outcome

• CO2 avoidance of approximately 950 tonnes/year from wind park participation (10% stake in Verenafohren wind park producing 20 million kWh/year and avoiding 9,500 tonnes CO2 total)
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core.

• Tuttlinger WohnbaucoreStrategic or Co-development Partner · 1 January 2026Joint Mieterstromprojekt (shared tenant electricity project) between Stadtwerke Tuttlingen and Tuttlinger Wohnbau. Solar energy generated from the tenant's own building is supplied to residents, advancing the local energy transition. Project at Bodenseestraße 37 apartment building represents joint commitment to distributed solar generation in multi-family housing.
• Hegauwind GmbH & Co.KGcoreStrategic or Co-development Partner · 1 January 2015Stadtwerke Tuttlingen has held an approximately 10% stake in Hegauwind GmbH & Co.KG since 2015. This company operates the Verenafohren wind park in the district of Konstanz near Tengen. The wind park uses three weak-wind turbines producing approximately 20 million kWh/year, sufficient to supply the equivalent of about 20,000 residents (all residents of Tengen, Engen, and Hilzingen). The partnership contributes approximately 950 tonnes of CO2 avoidance annually to swt's sustainability portfolio.
• Bodenseewasserversorgung (Lake Constance Water Supply)coreOthersZweckverband Bodenseewasserversorgung supplies supplementary drinking water to Tuttlingen's network, supplementing own water production from Wasserwerk Riedgraben and Wasserwerk Tiefental.
• Zweckverband Wasserversorgung Unteres AitrachtalcoreOthersSupplies drinking water to Tuttlinger Höfe district and Möhringen area in addition to own water production from Tiefental waterworks.

Scale indicators12 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Stadtwerke Villingen-Schwenningen: Neighboring Black Forest / Baar region municipal utility providing electricity, gas, water, district heating and broadband. Similar size tier and customer base as Stadtwerke Tuttlingen, with comparable renewable heating investments.
• Stadtwerke Karlsruhe: Mid-sized Baden-Württemberg municipal utility with very similar profile to Stadtwerke Tuttlingen: electricity, gas, water, district heating, broadband, swimming facilities, and a regional wind/solar portfolio. Closest comparable on size, geography, and product mix.
• Stadtwerke Konstanz: Neighboring Lake Constance municipal utility operating electricity, gas, water, district heating, broadband, and ferry services. Highly comparable on geography (Hegau region), size, and concession-based municipal business model.
• Stadtwerke Heidelberg: Mid-sized municipal utility in Baden-Württemberg offering electricity, gas, water, district heating, broadband, and leisure facilities (Thermen, Bäder) — almost identical service portfolio and regulatory context to Stadtwerke Tuttlingen.
• Stadtwerke Reutlingen: Mid-sized Baden-Württemberg municipal utility serving Reutlingen with electricity, gas, water, and heating. Comparable on scale, regulatory environment, and operational model as a regional Grundversorger.

Broad incumbents

• EWE Vertrieb: Large regional utility (northwest Germany) with electricity, gas, heat, water, and broadband operations. Comparable on the multi-utility stack and on bundling energy with telecommunications, though operating at larger scale.
• Stadtwerke München (SWM): Germany's largest municipal multi-utility (electricity, gas, district heating, water, broadband, U-Bahn), operating the same integrated utility + concession model as Stadtwerke Tuttlingen but at vastly greater scale in Munich. Direct comparability on business model, regulatory framework, and product portfolio.
• EnBW Energie Baden-Württemberg: Dominant regional energy incumbent in Baden-Württemberg and Tuttlingen's upstream network operator. Comparable because it competes with swt in supply, sets the regulatory tone for grid fees, and operates overlapping renewable generation assets.
• Stadtwerke Stuttgart: Large Baden-Württemberg municipal utility providing electricity, gas, district heating, water and mobility services in Stuttgart. Same regional regulatory environment as Tuttlingen and similar municipal-ownership structure; benchmark for renewable district heating economics in the state.

Emerging players

• NaturEnergie+ (NaturEnergie AG): German renewable-focused energy supplier headquartered in southern Baden-Württemberg offering Ökostrom and Ökogas. Comparable to swt's Ökostrom/Ökogas product line and competes for eco-conscious residential customers in the same regional market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@stadtwerketuttlingengmbhha6542
• Facebookfacebook.com/profile.php?id=61570184481588&locale=de_DE
• LinkedInlinkedin.com/company/stadtwerke-tuttlingen-gmbh
• Instagraminstagram.com/swt_energie?utm_source=ig_web_button_share_sheet&igsh=ZDNlZDc0MzIxNw==
• Xx.com/SWTenergie

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Municipal Utilities Tuttlingen