Stadtwerke Heidenheim

What Stadtwerke Heidenheim does

Stadtwerke Heidenheim AG is a municipally owned German utility group headquartered in Heidenheim an der Brenz, with the City of Heidenheim as sole shareholder. Founded in 1870 (with 1971 cited as a separate marker in firmographic data), the company operates a diversified portfolio spanning nationwide electricity and gas supply, drinking water distribution, district and local heating, distributed renewable energy generation, real estate development, construction, hotel and bath operations, e-mobility services, and professional services for municipalities and other utilities. Its customer base covers private households, commercial and industrial clients, municipal governments, and approximately 20 other Stadtwerke supplied under partial energy contracts, with roughly 81% of revenue generated outside the home region. Approximately €700 million in FY2025 consolidated revenue and €48 million in group net income (after loss absorption of deficit operations such as baths and parking) demonstrate a mature, profitable utility with a strong dividend stream to its municipal owner.

The group's technology footprint centers on a proprietary trading floor active at European power exchanges for wholesale electricity and gas trading, a distributed renewable generation portfolio of roughly 285,000 kW across Germany (solar and wind parks, including the recent Lohnweiler, Truppacherhof and Herrscheid acquisitions) producing about 558 million kWh annually, 24/7-monitored energy and water grids, and the HellensteinPortal online customer center for self-service account management. Energy-adjacent capabilities include energy consulting, building certification, heating cost accounting, mobile heating centers, street lighting, and operational management of other municipal utilities — most notably Stadtwerke Rothenburg o.d.T. GmbH since April 2015, where the company also took over the Wildbad Rothenburg o.d.T. hotel under a management contract from January 2025.

The business model is dominated by usage-based revenue from energy and water consumption volumes (electricity, gas, drinking water, district heating), supplemented by subscription/recurring income from renewable generation, real estate and short-term apartment rentals (94% occupancy at Wohnbau Waldhorn GmbH), hotels, the HellensteinBad aquarena, e-mobility and parking services. Transaction-fee income is generated through wholesale energy trading on the company's own floor, while professional services fees derive from operational management, development services, and consulting for municipalities and energy suppliers. Distribution combines a direct customer center and 24-hour hotline in Heidenheim with inside sales, the HellensteinPortal self-service channel, an online tariff calculator, and channel partnerships with approximately 40 municipal utilities in the renewable energy co-investment network. Pricing is regulated through local network charges (with a net -1.99 cents/kWh reduction for 2026) and government levies; an electricity price decrease of approximately -5% (about -€60.69/year gross for an average household) was announced for January 2026.

Name

Stadtwerke Heidenheim

Legal name

Stadtwerke Heidenheim AG

Website

https://stadtwerke-heidenheim.de

Company type

Public

Founded year

1870

Operating status

Operating

Headcount range

251–500 employees

Ownership category

akta.pro rank

Product category

Municipal Utility Services (Energy, Water and Heating)

NAICS

Electric Power Generation, Transmission and Distribution (2211), Water Supply and Irrigation Systems (221310)

SIC

Electric, Gas & Sanitary Services (4900), Water Supply (4941), Hotels, Rooming Houses, Camps & Other Lodging Places (7000)

akta.pro primary industry

Retail Supply + DER/Virtual Power Plant Bundles (Solar, Storage, DR) (EUAGABAI)

akta.pro secondary industries

Energy & Renewables Specialty Contracting (Solar PV, Storage, EV Charging) (IMAFALAJ), Multi-Unit STR / Aparthotel Management (BPAJAIAC)

Keywords

• Municipal energy supply
• Drinking water services
• District heating networks
• Renewable energy generation
• Utility grid operations

Headquarters

HQ city

Heidenheim An Der Brenz

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Energy Supply (Electricity & Gas): Sale of electricity and gas to residential, commercial, industrial, and municipal customers nationwide. Revenue is usage-based, driven by consumption volumes (kWh). Approximately 81% of revenue comes from customers outside the city of Heidenheim and the region.
2. Drinking Water Supply: Drinking water supply to households and businesses in Heidenheim, sourced from own wells and supplemented by deliveries to the Landeswasserversorgung water association.
3. District and Local Heating (Fern-/Nahwärme): District heating and local heating solutions including individual heating contracting for buildings, generating approximately 66.3 million kWh annually.
4. Renewable Energy Generation: Operation of solar and wind parks in which Stadtwerke AG holds majority stakes (≥25%), generating renewable electricity sold to the grid or to bundled customers.
5. Real Estate Development & Management: Development and management of residential and commercial properties through subsidiary construction companies. Revenue from property sales, rental income, and facility management services. The Brenzpark Quartier project and acquisition of Heinrich Hebel Wohnbau GmbH are flagship examples.
6. Hotel & Hospitality Operations: Operation of three hotels and one restaurant, including Schlosshotel Hellenstein, ECOME Hotel, and Wildbad Rothenburg o.d.T. (operated under management contract since 01.01.2025). Also includes short-term apartment rentals (Wohnbau Waldhorn GmbH) with 94% average occupancy.
7. Bath & Leisure Operations: Operation of the HellensteinBad aquarena leisure pool, which also serves as a community engagement platform through the annual HellensteinMarathon charity event.
8. E-Mobility Services: Charging solutions for electric vehicles (HellensteinStrom mobil), THG quota trading for EV owners, and parking management (HellensteinParken).
9. Energy-Adjacent Professional Services: Energy consulting, building certification, heating cost accounting, mobile heating centers, building management services, street lighting, development services, and operational management for other municipalities and utilities (e.g., Stadtwerke Rothenburg o.d.T. GmbH).
10. Energy Trading (Wholesale): International wholesale energy trading via the company's own trading floor at European power exchanges, distributing energy to other utilities and bundled customers.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels8 records

Core offering

Stadtwerke Heidenheim AG is a municipal utility (Stadtwerke) that supplies electricity, natural gas, drinking water, and district heating to households, businesses, municipalities, and industrial customers in Germany. The company also operates a distributed renewable energy portfolio (solar and wind parks nationwide), runs an in-house energy trading floor at European exchanges, develops real estate (Brenzpark Quartier) and operates hotels (Schlosshotel Hellenstein, ECOME Hotel, Wildbad Rothenburg o.d.T.) and a leisure pool (HellensteinBad aquarena).

Differentiator

Problem solved

Functional benefit

Brands

• HellensteinStrom: Electricity tariff brand for residential and commercial customers
• HellensteinStrom aqua
• HellensteinStromÖko dynamik
• HellensteinGas
• HellensteinGas bio 10
• HellensteinGas bio 65
• HellensteinWärme
• HellensteinCard
• HellensteinBad aquarena
• HellensteinStrom mobil
• HellensteinParken
• HellensteinThermo
• HellensteinPortal
• Schlosshotel Hellenstein
• ECOME Hotel
• Wildbad Rothenburg o.d.T.
• Brenzpark Quartier
• HellensteinMarathon

Products and services

• HellensteinStrom Electricity Tariff Family (including HellensteinStrom aqua, HellensteinStromÖko dynamik and Grund-/Ersatzversorgung) Electricity tariff product family for residential and commercial customers in Germany, including eco-dynamic and water-themed variants plus basic and substitute supply (Grund-/Ersatzversorgung), priced per kWh and procured/wholesale-traded via the company's own trading floor.
• HellensteinGas Natural Gas Tariff Family (including HellensteinGas bio 10, HellensteinGas bio 65 and Grund-/Ersatzversorgung) Natural gas tariff product family for residential and commercial customers, including biogas blends (10% and 65% renewable content) and basic supply, sold per kWh with stable 2025/2026 pricing and procurement managed via the company's own trading floor.
• Drinking Water Supply (Trinkwasserversorgung) Municipal drinking water supply to households and businesses in the Heidenheim area, sourced from own wells and topped up from the regional Landeswasserversorgung, including house connections and 24/7 network monitoring.
• HellensteinWärme District and Local Heating plus Heating Contracting District heating (Fern-/Nahwärme) and tailored heating contracting for residential, commercial, industrial and municipal customers, including individual building heating solutions and mobile heating centers (~66.3 million kWh annual generation).
• Renewable Energy Generation Portfolio (Solar and Wind Parks nationwide) Distributed renewable energy generation from solar and wind parks across Germany (including Rheinland-Pfalz and North Rhine-Westphalia), with majority ownership stakes (≥25%) by Stadtwerke AG, generating ~558 million kWh/year and supplying ~175,700 average households (~547,500 tonnes CO2 avoided annually vs. lignite).
• Wholesale Energy Trading at European Power Exchanges (own Trading Floor) Proprietary energy trading floor that buys and sells electricity and gas independently at European power exchanges, serving as the procurement backbone for own supply and as a wholesale service to other utilities and bundled customers.
• HellensteinStrom mobil E-Mobility Charging + THG-Quote Service E-mobility charging solutions for individual EV owners and commercial fleets, alongside administrative handling of the THG-Quote (greenhouse-gas quota) including submission to the Umweltbundesamt, with parking services via HellensteinParken.
• Real Estate Development and Management (Brenzpark Quartier and Subsidiary Portfolio) Development and management of residential and commercial real estate via Baugesellschaft Heidenheim GmbH (BGH), Wohnbau Brenzpark GmbH, Baugesellschaft Frankenthal (Pfalz) GmbH, Heinrich Hebel Wohnbau GmbH (from 01.01.2026) and Wohnbau Waldhorn GmbH, including single-family homes, multi-family apartments, nursing and medical facilities, short-term rentals (135 units, 94% occupancy), and the Schlosspark Areal with football academy and boarding apartments.
• Hotel and Hospitality Operations (Schlosshotel Hellenstein, ECOME Hotel, Wildbad Rothenburg o.d.T.) Hotel and hospitality operations including Schlosshotel Hellenstein, ECOME Hotel, and the managed Hotel Wildbad Rothenburg o.d.T. (under Schlosshotel Hellenstein GmbH), plus the Schlossrestaurant, with 10% HellensteinCard holder discounts.
• HellensteinBad aquarena Leisure Pool Operations Leisure pool and aquarena facility operated by Stadtwerke AG, hosting the annual HellensteinMarathon charity swimming event; also serves as the brand and physical platform for the bath-segment services offered to other municipal utilities.
• Operational and Commercial Management Services for Other Utilities (e.g., Stadtwerke Rothenburg o.d.T. GmbH) Operative and commercial Geschäfts- und Betriebsführung for other municipal utilities, providing market-tested business models, products and services in energy supply, water, and bath operations; current mandate covers Stadtwerke Rothenburg o.d.T. GmbH.
• Energy Consulting, Building Certification and HellensteinThermo Energy Contracting Services Energy consulting, building energy certification, renovation roadmaps, house connection services and HellensteinThermo thermal contracting for residential and commercial customers, plus heating cost accounting (Heizkostenabrechnung).
• HellensteinCard Customer Loyalty Program Customer loyalty card providing discounts and benefits at partner hospitality and leisure establishments, used to cross-promote the utility's hotel and bath services and to drive bundled customer engagement.
• HellensteinParken Parking Management Services Parking management services (HellensteinParken) bundled with the group's e-mobility and urban mobility offerings for residential customers, visitors, and commercial operators in Heidenheim.
• HellensteinPortal Online Customer Center Online self-service portal that allows customers to manage electricity, gas, water and heating contracts, view invoices, submit meter readings, and handle move-in/move-out processes online 24/7.

Quantifiable outcome

• 547,500 tonnes of CO₂ avoided per year through renewable energy generation versus conventional lignite-fired generation.
• +4 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

16 partnerships are on record, tiered core and minor.

• DRK Heidenheim (Deutsches Rotes Kreuz, Kreisverband Heidenheim)coreStrategic or Co-development Partner · 11 June 2026German Red Cross leased space in the Brenzpark Quartier for a nursing home with senior day care (Pflegeheim mit Seniorentagespflege), which was already occupied and set up in the weeks leading up to the June 2026 handover. DRK Kreisgeschäftsführer Mathias Brodbeck emphasized the integration of care, quality of life, and community in the vibrant quarter.
• Radiologie und Nuklearmedizin Ostalb (Überörtliche Berufsausübungsgemeinschaft)coreStrategic or Co-development Partner · 11 June 2026Radiology and nuclear medicine practice consolidating three existing Heidenheim locations into the Brenzpark Quartier. Will operate CT, MRI, and X-ray equipment on-site. Led by Dr. Stefan Klein; radiology mammography screening program also relocated. Moving in early July 2026 after the June 2026 handover.
• JUWI-Gruppe (JUWI GmbH)coreStrategic or Co-development Partner · 1 January 2026Stadtwerke AG and JUWI-Gruppe from Wörrstadt have collaborated on multiple renewable energy projects. In 2025 they co-realized a PV project; in January 2026 Stadtwerke AG acquired the Solarpark Lohnweiler (19,992 kWp) from JUWI, under construction in Lohnweiler (district Kusel, Rhineland-Palatinate), expected commissioning April 2026. JUWI CEO Christian Arnold praised the cooperation as key for accelerating renewable energy expansion in Germany.
• Heinrich Hebel Wohnbau GmbHcoreStrategic or Co-development Partner · 1 December 2025Stadtwerke AG acquired 100% of the shares of Heinrich Hebel Wohnbau GmbH (including subsidiaries Heinrich Hebel Gewerbe- und Industriebau GmbH and Heinrich Hebel Schlüsselfertiges Bauen GmbH) effective 01.01.2026. The acquisition strengthens Stadtwerke AG's real estate business with single-family homes added to the portfolio. Founders Heinrich Hebel, Jürgen Beyrle, and Walter Dörflinger transitioned, with Erich Weber (Stadtwerke AG board) joining the management.
• Schlosshotel Hellenstein & SchlossrestaurantminorGTM or Marketing Partner · 1 August 2025Hotel operated by Stadtwerke AG subsidiary Schlosshotel Hellenstein GmbH. Partner in the HellensteinCard loyalty program offering 10% discount to HellensteinCard holders.
• ECOME HotelminorGTM or Marketing Partner · 1 August 2025Hotel partner in the HellensteinCard loyalty program offering 10% discount to HellensteinCard holders.
• Wildbad Rothenburg o.d.T.minorGTM or Marketing Partner · 1 August 2025Hotel and spa operated by Stadtwerke AG under a management contract since 01.01.2025. Partner in the HellensteinCard loyalty program offering 10% discount to HellensteinCard holders.
• Essinger Wohnbau GmbHcoreStrategic or Co-development Partner · 1 January 2025Co-development partner with 1. FC Heidenheim 1846 e.V. on the Schlosspark Areal project. Essinger Wohnbau GmbH acted as developer (Bauträger) for a building housing the FCH football academy, office space, and boarding apartments managed by Stadtwerke AG. Ground was broken in Q1 2025; completion planned for end of 2026.
• 1. FC Heidenheim 1846 e.V. (FCH)coreStrategic or Co-development Partner · 1 January 2025Football club leasing the ground floor and first floor (approximately 831 m² total) of the Schlosspark Areal building for offices and the HARTMANN NachwuchsLeistungsZentrum football academy. The building also houses 30 boarding apartments operated by Stadtwerke AG on upper floors.
• Network of ~40 Municipal Utility Partners (Erneuerbare-Energien-Netzwerk)coreStrategic or Co-development Partner · 1 January 2025Approximately 40 municipal utility partners co-invest in renewable energy projects with Stadtwerke AG, enabling shared investment in solar and wind parks across Germany. Stadtwerke AG regularly offers co-investment opportunities to other Stadtwerke in renewable energy projects.
• Wohnbau Brenzpark GmbHcoreStrategic or Co-development Partner · 1 September 2024Wohnbau Brenzpark GmbH — a 100% subsidiary of Baugesellschaft Heidenheim GmbH (BGH) — is developing the Brenzpark Quartier, a mixed-use residential and commercial project on the former slaughterhouse site in Heidenheim. The project spans approximately 9,200 m² with 106 apartments, healthcare facilities, retail, and a green courtyard.
• Franz Traub GmbH & Co. KGminorStrategic or Co-development Partner · 1 September 2024Construction partner in the Brenzpark Quartier project. Franz Traub GmbH & Co. KG (Günter Schönherr, Franz Traub, Lukas Traub) is responsible for construction work in the development.
• Hufnagel PartGmbBminorStrategic or Co-development Partner · 1 September 2024Construction management partner in the Brenzpark Quartier project. Hufnagel PartGmbB (Martin Hufnagel, Caroline Kissanek) oversees construction management of the development.
• arabzadeh.schneider.wirth architektenminorImplementation/ SI/ Consulting Partner · 1 September 2024Architecture firm responsible for the design of the Brenzpark Quartier project, led by Stefan Schneider and Kerstin Müller.
• KaiserEnergieminorChannel Partner/ Reseller/ Distributor · 1 January 2024External energy sales partner for third-party energy distribution. Referenced as the company's partner for energy sales to third parties in the Energieversorger business segment.
• Stadtwerke Rothenburg o.d.T. GmbHcoreStrategic or Co-development Partner · 1 April 2015Stadtwerke AG has assumed the commercial and operational management (Geschäfts- und Betriebsführung) of Stadtwerke Rothenburg o.d.T. GmbH since April 2015. Leverages Stadtwerke AG's market-tested business models, products, and services in energy and water supply as well as bath operations. Stadtwerke AG also operates the Wildbad Rothenburg o.d.T. hotel under a management contract from 01.01.2025.

Scale indicators12 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Stadtwerke München (SWM): Munich's municipal multi-utility (energy, water, telecom, public transport) and Germany's largest Stadtwerke by revenue. Directly comparable as a German municipal utility operating electricity/gas supply, renewable generation (wind, solar, geothermal), district heating, and water services with nationwide trading.
• Mainova AG: Frankfurt-based municipal multi-utility supplying electricity, gas, heat, and water to residential, commercial, and industrial customers in Hesse and beyond. Closely comparable as a mid-sized German Stadtwerke with similar customer mix and a strong regulated/retail supply profile.
• N-ERGIE Aktiengesellschaft: Nuremberg's municipal utility providing electricity, gas, heat, and water with significant renewable generation investments in the N-ERGIE Group. Highly comparable in scale, customer segments, and the diversified municipal utility model.
• Stadtwerke Leipzig GmbH: Leipzig's municipal multi-utility offering electricity, gas, district heating, water, and mobility services. Directly comparable diversified Stadtwerke with similar municipal shareholder structure and renewable investment program.
• Stadtwerke Düsseldorf AG: Düsseldorf municipal utility providing electricity, gas, heat, and water with strong renewable investments. Comparable mid-sized Stadtwerke with similar diversified energy and water supply footprint.

Regional players

• OEW (Oberschwäbische Elektrizitätswerke): Regional energy utility serving the Oberschwaben area in Baden-Württemberg — the same German state as Stadtwerke Heidenheim. Comparable as a regional municipal/utility partner with renewable generation assets and wholesale supply activities in southern Germany.

Broad incumbents

• EnBW Energie Baden-Württemberg: Stuttgart-headquartered incumbent utility serving the same Baden-Württemberg region with electricity, gas, and renewable generation at national scale. Comparable as the regional incumbent where Stadtwerke Heidenheim operates and competes for customers and renewable pipeline assets.
• E.ON SE: European energy distribution and retail supply incumbent with deep presence in German municipal energy markets. Comparable as a broad incumbent that Stadtwerke Heidenheim competes against in nationwide retail supply and wholesale energy trading.
• Statkraft Markets GmbH: European power trader and renewable generator active at German and European power exchanges. Comparable to the trading floor and renewable portfolio components of Stadtwerke Heidenheim's business, though at much larger scale.

Others

• JUWI GmbH: German renewable energy developer (solar, wind) and supplier of turnkey projects. Comparable as a partner/seller in Stadtwerke Heidenheim's renewable acquisitions (Solarpark Lohnweiler, Truppacherhof) and as a project developer for the co-investment pipeline.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries9 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 Heidenheim