What Erdgas Südwest GmbH does

Erdgas Südwest GmbH is a regional energy provider headquartered in Ettlingen, Baden-Württemberg, Germany, founded in 2004 and operating across North Baden and Upper Swabia. The company supplies natural gas and electricity to approximately 52,000 residential, commercial, industrial, and municipal customers through subscription-based tariffs, including green electricity and biomethane variants, with monthly billing and combination-tariff options. It is privately held, with EnBW Energie Baden-Württemberg AG and OEW Energie-Beteiligungs GmbH as its two shareholders, and operates with a lean team of 59 employees.

The company's core technology and product portfolio extends beyond commodity supply into renewable energy solutions, including rooftop, ground-mounted, and floating photovoltaic installations. Erdgas Südwest has developed specialized expertise in floating PV on quarry lakes and gravel pits, deploying projects at Renchen (750 kWpeak), Leimersheim (1.5 MWpeak, Germany's largest at the time of commissioning in 2020), and Ostrach (750 kWpeak, 2023), using regional supplier Zimmermann for floating structures. The company also delivers turnkey heating solutions (Viessmann heat pumps, hydrogen fuel cell heating, gas condensing boilers), solar PV with storage packages, EV charging infrastructure, and flexibility and direct marketing services for distributed renewable assets. Energy consulting is delivered through subsidiary/partnership AutenSys GmbH (an EnBW Group engineering firm), covering DIN EN16247 audits, BAFA-subsidized consulting, climate protection concepts, and municipal decarbonization services.

Erdgas Südwest's business model combines recurring utility tariff revenue with project-based revenue from PV installations and direct electricity supply (Direktstromlieferung) under long-term power purchase agreements, plus fee-based flexibility and direct marketing of third-party generation assets. The go-to-market is bifurcated: website-based self-service for residential customers and consultative field sales for commercial, industrial, and municipal clients. The company is ISO 14001 certified, recognized as a TOP-Lokalversorger for 11 consecutive years (2026 being the latest), and received the Energiewende Award for its regenerative heat portfolio. Its marketing approach centers on the 'natürlichZukunft' content platform, newsletter engagement, and Trustpilot-driven social proof.

Name

Erdgas Südwest GmbH

Legal name

Erdgas Südwest GmbH

Website

https://erdgas-suedwest.de

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

51–100 employees

Short description

Erdgas Südwest GmbH is a regional energy provider in Baden-Württemberg, Germany, supplying gas, electricity, heat pumps, and floating PV installations to ~52,000 residential, commercial, and municipal customers across North Baden and Upper Swabia, owned by EnBW and OEW.

Ownership category

akta.pro rank

Product category

Regional Energy Utility Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Solar Electric Power Generation (221114), Electric Power Generation (22111)

SIC

Electric Services (4911), Natural Gas Distribution (4924), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

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

akta.pro secondary industries

DER Aggregation & Virtual Power Plants (VPPs) (EUAMAJAC), Interconnection, Permitting & Grid Services for DERs (EUAMAJAH), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB)

Keywords

• Natural gas supply
• Electricity supply
• Renewable energy solutions
• Solar installations
• Heat pump systems

Headquarters

HQ city

Ettlingen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Energy Supply (Gas and Electricity): Erdgas Südwest supplies natural gas and electricity to residential, commercial, and municipal customers across North Baden and Upper Swabia. Revenue is generated through recurring consumption-based tariffs for gas and electricity, including green/eco tariff variants (green electricity from South German hydropower, biomethane).
2. Heating Systems and Solar Installations: The company sells complete heating packages including heat pumps and solar installations (PV and solar thermal) as turnkey solutions for residential and commercial customers. Products include Viessmann heat pumps and complete PV-solar-storage packages.
3. Energy Consulting Services: Erdgas Südwest provides energy consulting services for businesses and municipalities, facilitated through its partner AutenSys GmbH. Consulting covers DIN EN16247 energy audits, climate protection concepts, subsidy advisory, and autarky concepts. These services are partially eligible for BAFA funding.
4. Photovoltaic Project Development and Direct Electricity Supply: Erdgas Südwest develops and operates PV installations for commercial and municipal customers, including ground-mounted, floating, and rooftop systems. The company invests in and operates PV plants near customer sites, supplying renewable electricity via direct lines (Direktstromlieferung) through long-term power purchase agreements.
5. Flexibility and Direct Marketing of Power Generation: For municipal and commercial operators of power generation assets (biogas, PV, wind, hydro, CHP), Erdgas Südwest markets electricity production at the power exchange through direct marketing (Direktvermarktung) and flexibility marketing (Flexibilitätsvermarktung).

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Erdgas Südwest GmbH is a regional energy utility supplying natural gas and electricity to approximately 52,000 residential, commercial, and municipal customers across North Baden and Upper Swabia in Baden-Württemberg, Germany. The company also provides renewable energy solutions including heat pumps, rooftop and ground-mounted photovoltaic (PV) systems, proprietary floating PV installations, EV charging infrastructure, energy consulting, and direct marketing of distributed power generation assets. Backed by shareholders EnBW and OEW, it operates an integrated 'everything from one source' portfolio combining traditional energy supply with decarbonization services.

Product overview

Erdgas Südwest GmbH offers a comprehensive energy portfolio combining traditional utility services (gas and electricity supply) with renewable energy solutions. The core offering includes residential gas and electricity tariffs, heat pump electricity, dynamic pricing, and combination packages. The company provides complete heating solutions encompassing heat pumps, solar thermal systems, hydrogen fuel cells, and gas condensing boilers. For businesses and municipalities, the company delivers photovoltaic installations (rooftop, ground-mounted, and floating/schwimmende PV), EV charging infrastructure, flexibility marketing, direct power marketing, and professional energy consulting. Municipal services extend to CO2 balancing, climate neutrality planning, municipal heat planning, and European Energy Award certification support. The product architecture operates as a full-service energy solutions provider with offerings spanning energy supply, heating/cooling systems, solar generation, and energy management consulting.

Differentiator

Problem solved

Functional benefit

Brands

• AutenSys GmbH: Energy consulting services for businesses and municipalities following DIN EN16247 standards.

Products and services

• Gas Tariffs (Gastarife)
• Electricity Tariffs (Stromtarife)
• Heat Electricity Tariff (Wärmestromtarif)
• Gas-Electricity Combination Tariff (Gas-Strom-Kombitarif)
• Dynamic Electricity Tariff (Dynamischer Stromtarif)
• Heating Systems (Heizungen)
• Solar Systems (Solaranlagen)
• Photovoltaic Solutions for Businesses and Municipalities
• Charging Solutions for Electromobility (Ladelösungen)
• Flexibility Marketing (Flexibilitätsvermarktung)
• Direct Marketing (Direktvermarktung)
• Energy Consulting (Energieberatung nach DIN EN16247)
• Municipal Climate Neutrality Solutions
• CO2 Balancing
• Grid Connection Services

Quantifiable outcome

• TOP-Lokalversorger award for 11 consecutive years — recognition for service quality and fair price-performance ratio
• +4 more outcomes

Named customers5 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

Feature2 records

Partnerships

One partnership is on record.

• AutenSys GmbHcoreImplementation/ SI/ Consulting PartnerAutenSys GmbH is a subsidiary of the EnBW Group and an engineering startup based in Karlsruhe. Erdgas Südwest partners with AutenSys for energy consulting services under DIN EN16247, BAFA-subsidized energy consulting for non-residential buildings, climate protection concepts, subsidy advisory, and autarky concepts for municipalities and businesses. AutenSys also supports Erdgas Südwest in municipal energy consulting engagements including CO2 balancing and heat planning.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Stadtwerke Karlsruhe: Regional municipal utility serving Karlsruhe and the surrounding region in Baden-Württemberg with gas, electricity, heat, and increasingly renewable/decarbonization offerings. Directly comparable because both serve overlapping Nordbaden residential, commercial, and municipal customers with the same mix of energy supply plus renewable/EV-charging services.
• Pfalzwerke AG: Regional utility serving the Palatinate region adjacent to Nordbaden with electricity, gas, and an expanding renewable portfolio (including PV project development). Comparable because it is a similarly sized regional supplier with municipal ties, expanding into PV generation and municipal decarbonization services.
• badenova AG & Co. KG: Regional energy supplier headquartered in Freiburg serving southwestern Baden-Württemberg with electricity, gas, heat, water, and renewable energy services. Highly comparable because it operates in the same state, combines retail utility supply with renewable project development, and targets similar residential/commercial/municipal segments.

Regional players

• Stadtwerke München (SWM): Large municipal utility for Munich providing electricity, gas, district heating, and renewable generation. Comparable business model (municipal utility with renewable portfolio and Direktvermarktung), but operates in Bavaria rather than Baden-Württemberg and is materially larger in scale.
• Mainova AG: Regional municipal utility serving Frankfurt and Hesse with electricity, gas, heat, and water. Comparable as a sub-scale regional supplier combining retail utility supply with renewable expansion, though operating in a different geography (Hesse vs. Baden-Württemberg).

Broad incumbents

• EnBW Energie Baden-Württemberg AG: Major German integrated utility and parent shareholder of Erdgas Südwest. Broadly comparable because it operates across the full energy value chain (generation, grid, retail) in Baden-Württemberg and is the upstream provider whose ecosystem Erdgas Südwest leverages; it is a broader incumbent rather than a like-for-like regional peer.
• E.ON Energie Deutschland GmbH: Major German retail energy supplier offering electricity, gas, heat, PV, EV charging, and municipal energy services nationwide. Comparable as a broad incumbent competing for the same residential and municipal customers across Germany with overlapping products, though operating at national rather than regional scale.
• Thüga Holding GmbH: German municipal-utility consortium holding stakes in ~100 Stadtwerke across Germany. Comparable because many Thüga affiliates operate the same retail-supply-plus-DER business model as Erdgas Südwest in their respective territories; Thüga itself is a broader holding-company incumbent.

Emerging players

• Lichtblick SE: Independent German electricity supplier focused on 100% renewable supply, dynamic tariffs, and customer-side flexibility (e.g., ZuhauseKraftwerk). Comparable because it targets the same German residential segment with green/eco electricity and flexibility marketing, albeit as a pure-play without the municipal and heat-pump business.
• Yello Strom GmbH: EnBW-affiliated challenger electricity brand targeting digitally native residential and SMB customers with dynamic tariffs and renewable supply. Comparable because it competes for the same Baden-Württemberg customers seeking renewable tariffs, but reaches them via a digital-only model rather than a regional field-sales franchise.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube-nocookie.com/embed/fSii4Lz5gzQ
• Facebookfacebook.com/erdgassuedwest
• LinkedInlinkedin.com/company/erdgas-suedwest

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

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 Erdgas Südwest GmbH