What Stadtwerke Altensteig does

Stadtwerke Altensteig is a municipal utility (Eigenbetrieb) wholly owned by the city of Altensteig in Baden-Württemberg, Germany, registered as HRA 341084 at Amtsgericht Stuttgart. It provides essential public services to residential and commercial customers in Altensteig and surrounding communities, including electricity (Strom), natural gas (Erdgas), drinking water (Trinkwasser), and district heating (Wärme) to Altensteig, Spielberg, Walddorf, Wart, and Glatten. The utility also operates public infrastructure including an outdoor swimming pool (Freibad), an indoor swimming pool (Hallenbad Walddorf), and the Parkhaus am Marktplatz parking facility, plus e-mobility charging points (E-Ladepunkte) and a fiber optic telecommunications network delivered in partnership with Stiegeler.

The underlying technology stack includes municipal energy distribution networks, smart meter gateway infrastructure for intelligent energy measurement and grid management, a fiber optic network providing high-speed connectivity, and a renewable generation portfolio comprising six hydroelectric plants, more than 20 PV installations, two PV free-field solar parks, and equity participations in six wind parks and five PV parks across Germany. Local renewable generation totals 15,000+ MWh annually, enough to supply approximately 5,000 households, with regenerative sources covering 50% of total electricity grid sales. The company holds ISO 27001, DVGW TSM, VDE TSM, and ISO 50001 certifications and is a European Energy Award recipient.

Business model is subscription- and usage-based across all utility streams (electricity, gas, water, heating, telecom) with add-on professional services including PV installation, battery storage, EV charging infrastructure, and grid connection services for distributed generation. The go-to-market is direct-to-consumer via a physical customer service office at Jahnstraße 13, a digital online service portal for contract management and meter readings, and a network connection portal for generation facilities. In 2026 the utility announced a joint cooperation society (Kooperationsgesellschaft) with Stadtwerke Freudenstadt, with Thüga AG and badenova AG pursuing participations, to bundle network, technology, procurement, sales, IT, and shared services while both utilities retain their independent brands.

Name

Stadtwerke Altensteig

Legal name

Stadtwerke Altensteig

Website

https://stadtwerke-altensteig.de

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Stadtwerke Altensteig is a municipal utility (Eigenbetrieb) owned by the city of Altensteig, Germany, supplying electricity, natural gas, drinking water, district heating, fiber optic internet, e-mobility charging, and public swimming and parking facilities to residential and commercial customers in the Altensteig region.

Ownership category

akta.pro rank

Product category

Municipal Utilities

NAICS

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

SIC

Water Supply (4941), Cogeneration Services & Small Power Producers (4991), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Interconnection, Permitting & Grid Services for DERs (EUAMAJAH)

akta.pro secondary industry

Microgrid, DER & Building Electrification Energy Controls (Solar/Storage/EV Load Orchestration) (BPABAGAJ)

Headquarters

HQ city

Altensteig

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Supply: Supply of electricity to residential and commercial customers within their service area, including tariff plans for Strom (electricity) with HT/NT (high tariff/low tariff) options
2. Natural Gas Supply: Supply of natural gas to customers in the region
3. Drinking Water Supply: Provision of drinking water to households and businesses
4. District Heating (Wärme): District heating supply to Altensteig, Spielberg, Walddorf, Wart and Glatten
5. Swimming Facilities: Operation of Freibad outdoor pool and Hallenbad Walddorf indoor pool with admission fees and season tickets
6. Parking Services: Operation of Parkhaus am Marktplatz with hourly and monthly parking rates, annual permits
7. Telecommunications (TV, Telefon, Internet): Fiber optic internet, TV, and telephone services in partnership with Stiegeler
8. Operating Services and Contracting: Operational management services, contracting models, and installation services including PV systems, battery storage, and e-mobility charging infrastructure
9. Grid Connection Services: Network connection services for generation plants, including PV installations, with EEG feed-in remuneration

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Stadtwerke Altensteig is a municipal utility providing electricity, natural gas, drinking water, and district heating supply to residential and commercial customers in Altensteig and surrounding communities. Beyond core utilities, it operates public swimming facilities (Freibad and Hallenbad Walddorf), a parking garage, e-mobility charging stations, fiber optic internet services (via Stiegeler partnership), and PV/electrical installation services. The company also operates local renewable energy generation including hydroelectric plants, PV installations, and equity stakes in wind parks.

Product overview

Stadtwerke Altensteig is a municipal utility company (Stadtwerke) providing essential public services including energy supply (electricity, natural gas, heating), drinking water, and infrastructure services. The product portfolio centers on core energy utilities (Strom, Erdgas, Trinkwasser, Wärme) complemented by commercial services, photovoltaic/electrical installation, e-mobility charging infrastructure, and fiber optic internet. Additional offerings include swimming facilities (Freibad and Hallenbad Walddorf), parking services, and digital customer service through an online portal. The company also operates network infrastructure and provides grid connection services via a dedicated portal for generation facilities. The services are provided through both physical locations and online digital channels.

Differentiator

Problem solved

Functional benefit

Products and services

• Strom (Electricity Supply)

Quantifiable outcome

• 15,000+ MWh renewable electricity locally generated annually, supplying ~5,000 households with green power
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Stadtwerke FreudenstadtcoreStrategic or Co-development Partner · 31 July 2026Inter-municipal cooperation with Freudenstadt to establish a joint cooperation society (Kooperationsgesellschaft). Partnership covers areas including network and technology, procurement and sales, information technology and shared services, and other services. Both utilities maintain independence while achieving synergies through shared central services. The cooperation aims to enhance efficiency, specialization, digitization, and resilience while preserving regional identity.
• Thüga AGminorStrategic or Co-development Partner · 31 July 2026Thüga AG is pursuing a participation in the new cooperation society. As a strong and experienced partner, Thüga aims to actively contribute to the new cooperation society alongside the municipal partners, helping to further develop the energy supply in the region in a future-proof, economically viable, and sustainable manner.
• badenova AG & Co. KGminorStrategic or Co-development Partner · 31 July 2026badenova AG & Co. KG is pursuing a participation in the new cooperation society. Both companies aim to actively contribute to developing the energy supply of the region in a future-proof, economically viable, and sustainable manner.
• Stiegeler (Stiegeler.com)coreChannel Partner/ Reseller/ DistributorPartnership for fiber optic internet services. Stiegeler provides tailored fiber tariffs and availability checking services while Stadtwerke Altensteig builds the fiber infrastructure. Customers can check availability and subscribe to services through Stiegeler's platform.
• Stadt AltensteigcoreStrategic or Co-development PartnerPartnership with parent municipality for climate protection initiatives. Joint project includes the establishment and permanent operation of an energy management system for the buildings of Stadt Altensteig, funded by Federal Ministry for Environment (67K30592) from 01.01.2026 to 31.12.2028.
• hitcom GmbHcoreTechnology or IntegrationExternal hosting provider for the Stadtwerke Altensteig website. Hitcom provides website hosting, CMS (Content Management System), and related digital services. A data processing agreement (AVV) is in place for GDPR compliance. Located at Junghansstraße 1, 78655 Dunningen.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Stadtwerke Freudenstadt: Neighboring municipal utility in the northern Black Forest, the announced core cooperation partner for the 2026 Kooperationsgesellschaft. Provides the same multi-utility offering (Strom, Gas, Wasser, Wärme, Bäder, Telekommunikation) and serves Freudenstadt plus Loßburg, Seewald, and Dornstetten — the most direct operational and structural comparison available.
• Stadtwerke Nagold: Adjacent municipal utility serving Nagold and surrounding communities in the northern Black Forest. Provides the same core municipal multi-utility services and competes for regional commercial customers — a like-for-like small-town Stadtwerke benchmark.
• Stadtwerke Horb: Municipal utility serving Horb am Neckar and adjacent towns in the same region of Baden-Württemberg. Comparable scope (electricity, gas, water, heat) and similar small-town operating profile.
• Stadtwerke Calw: Small municipal utility serving Calw in Nordschwarzwald, offering Strom, Gas, Wasser, Wärme, and Bäder. Closely comparable in size, geographic setting, and service portfolio to Stadtwerke Altensteig.

Broad incumbents

• Stadtwerke Pforzheim: Larger municipal utility serving Pforzheim and surrounding municipalities in the Nordschwarzwald region. Operates a comparable service portfolio plus Bäder and Telekommunikation, providing a useful 'next-step-up' benchmark for scaling municipal utilities in the same geography.
• Thüga AG: Large German municipal-utility network/holding company and pursued minority partner in the new Kooperationsgesellschaft. Brings scale, procurement, and digital expertise to municipal utilities — a relevant benchmark for what a more mature, networked Stadtwerke can look like.
• EnBW Energie Baden-Württemberg AG: Dominant incumbent energy company in Baden-Württemberg operating generation, grid, and retail across the same region. Relevant as the large-scale counterpart whose tariffs, grid services, and renewable build-outs shape the competitive context for municipal utilities like Stadtwerke Altensteig.
• badenova AG & Co. KG: Regional municipal utility and energy service provider headquartered in Freiburg, also pursuing a stake in the new cooperation society. Operates a comparable portfolio (Strom, Gas, Wärme, Wasser, Telekommunikation, E-Mobilität) across Baden-Württemberg at significantly larger scale.

Others

• Netze BW GmbH: Distribution network operator for EnBW in Baden-Württemberg and the regulated grid counterpart that owns and operates many of the high-voltage/mid-voltage networks feeding municipal utilities. Relevant as an enabling/adjoining infrastructure player rather than a direct competitor on retail supply.
• Stiegeler IT Service GmbH: Telecom reseller and partner providing fiber tariffs and customer acquisition for Stadtwerke Altensteig's Glasfaser network. Ecosystem partner rather than a competitor; comparable to other regional ISP/channel partners that help small Stadtwerke commercialize fiber infrastructure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/100070036065216
• Instagraminstagram.com/stadtwerke_altensteig
• LinkedInlinkedin.com/company/stadtwerke-altensteig

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Altensteig