Rhein-Sieg Netz GmbH

What Rhein-Sieg Netz GmbH does

Rhein-Sieg Netz GmbH (RSN) is a regulated distribution network operator (Verteilnetzbetreiber) headquartered in Siegburg, Germany, and a 100% subsidiary of rhenag Rheinische Energie AG. The company operates approximately 2,400 kilometers of gas distribution infrastructure across the Rhein-Sieg region, Rommerskirchen, Mettmann, and Freudenberg, serving 64,537 withdrawal points with annual gas throughput of roughly 2.3 TWh. RSN also provides technical operation, planning, and construction services for the electricity distribution network in Siegburg and Niederkassel on behalf of Westnetz GmbH, to which the electricity network has been leased, and handles drinking water network operations in Siegburg, Hennef, Much, and Königswinter. Its product portfolio extends beyond core utility distribution to include biogas injection services, photovoltaic grid connections, EV charging infrastructure connections, municipal heat planning consulting (Kommunale Wärmeplanung), 24/7 fault reporting, network plan information services, and (as of late 2024) street lighting operations management for Stadtbetriebe Siegburg AöR.

The business model rests on regulated network charges (Netzentgelte) under the German Anreizregulierung framework, supplemented by managed-services revenue from electricity network services to Westnetz, municipal gas network lease contracts (e.g., the GWR concession extended to 2038), and municipal infrastructure service contracts. RSN maintains ISO 9001 and ISO/IEC 27001 certifications, holds TSM certifications from DVGW (gas and water), VDE (electricity), and AGFW (district heating), and operates through five regional network service offices plus an online customer portal and 24/7 fault hotline. The company employs approximately 200 staff and serves end consumers (households, commercial, industrial), energy suppliers (via standardized framework contracts and EDI data exchange), metering operators, certified installers, and municipal government clients. Distribution is fully geographic and concession-bound, with no adjacent-market expansion outside the four assigned service regions.

Name

Rhein-Sieg Netz GmbH

Legal name

Rhein-Sieg Netz GmbH

Website

https://rhein-sieg-netz.de

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Rhein-Sieg Netz GmbH is a regulated gas and electricity distribution network operator headquartered in Siegburg, Germany, operating approximately 2,400 km of gas network across the Rhein-Sieg region and adjacent areas as a 100% subsidiary of rhenag Rheinische Energie AG.

Ownership category

akta.pro rank

Product category

Energy Distribution Network Services

NAICS

Natural Gas Distribution (22121)

SIC

Natural Gas Distribution (4924)

akta.pro primary industry

Decarbonization Planning for Distribution Networks (RNG/H2 Readiness) (EUAJAEAL)

akta.pro secondary industry

AMI/AMR Smart Meter Deployment & Operations (Head-End, Network & MDM) (EUAJACAD)

Keywords

• Gas distribution network
• Electricity distribution services
• Regulated network operator
• Energy infrastructure management
• Municipal heat planning

Headquarters

HQ city

Siegburg

HQ country

Germany

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Regulated Network Charges (Netznutzungsentgelte): RSN generates revenue through regulated network charges (Netzentgelte) for its gas distribution network. These charges are levied for network usage, measurement, and billing. Revenue is determined under regulatory framework (Anreizregulierung) set by the regulatory authority. The company publishes annual network charges for gas distribution.
2. Electricity Network Lease (Stromnetz-Pacht): RSN has leased its electricity distribution network to Westnetz GmbH. The company operates, plans, and builds the electricity distribution network on behalf of Westnetz, providing technical services while Westnetz acts as the responsible network operator. RSN also provides technical management services for street lighting (e.g., contract with Stadtbetriebe Siegburg AöR).
3. Gas Network Lease Contracts: RSN operates gas distribution networks under lease contracts with municipalities, such as the extended contract with Gemeindewerke Ruppichteroth GmbH (GWR) until 2038, covering approximately 450 house connections and ~24 million kWh of natural gas.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Rhein-Sieg Netz GmbH is a regulated distribution network operator (Verteilnetzbetreiber) that plans, builds, operates, and maintains approximately 2,400 km of natural gas distribution infrastructure across the Rhein-Sieg region, Rommerskirchen, Mettmann, and Freudenberg, and provides technical operation, planning, and construction services for the electricity distribution network in Siegburg and Niederkassel (on behalf of Westnetz GmbH). The company also performs managed technical operations for drinking water networks in select cities, issues network connections, provides smart metering (eHz/mMe), runs a 24/7 fault reporting hotline, and offers municipal heat planning consulting to support local heat transition (Wärmewende) through 2045.

Product overview

Rhein-Sieg Netz GmbH is a distribution network operator providing integrated energy infrastructure services across the Rhein-Sieg region and additional areas. The core offering consists of natural gas distribution (approximately 2,400 km network) and electricity distribution (in Siegburg and Niederkassel via Westnetz partnership). Supporting services include drinking water network operation, biogas injection, photovoltaic connection, electromobility charging infrastructure, municipal heat planning consulting, 24/7 fault reporting, network connection applications, and meter reading submission. The company operates as a 100% subsidiary of rhenang Rheinische Energie AG, managing network infrastructure for approximately 64,537 withdrawal points with a peak load of 75,662 qbm/h.

Differentiator

Problem solved

Functional benefit

Products and services

• Natural Gas Distribution (Erdgas) Operation of approximately 2,400 km of natural gas distribution network in the Rhein-Sieg region, Rommerskirchen, Mettmann, and Freudenberg. Services include network connection applications, meter reading, gas quality information, and safety inspections for residential, commercial, and industrial customers.
• Electricity Distribution (Strom) Electricity distribution network services in Siegburg and Niederkassel, operated on behalf of Westnetz GmbH. Includes network connections, smart meter management, and electromobility infrastructure connections.
• Drinking Water Network Operation (Trinkwasser) Technical operation of drinking water networks in Siegburg, Hennef, Much, and Königswinter. Includes commissioning of water installations and water quality information.
• Network Connection Services (Netzanschluss) Application and processing services for new or modified network connections for gas, electricity, and water across the service territory, including biogas and electromobility connections.
• Municipal Heat Planning (Kommunale Wärmeplanung) Consulting service for municipalities to develop local heat transition strategies, including inventory analysis, potential analysis, target scenarios, and zoning for heating networks, gas, and electricity networks through 2045. Supported by a digital heat atlas displaying building-specific heat demand, greenhouse gas emissions, building types, and renewable energy sources.
• Online Network Plan Information (Netzplanauskunft) Web-based system providing service providers with online access to distribution network maps for gas, electricity, water, and heating infrastructure, enabling planning and construction work coordination. Includes single queries via email and regular access for construction companies through the online portal.
• Street Lighting Management (Betriebsführung Straßenbeleuchtung) Operations management of municipal street lighting infrastructure. Initial contract covers over 4,000 streetlights in Siegburg, with planned LED modernization and digital control systems rollout.
• Gas Network Lease Operations (Pachtvertrag Gasnetz) Operation of gas distribution networks under lease contracts with municipalities. Includes the extended contract with Gemeindewerke Ruppichteroth GmbH (GWR) covering approximately 450 house connections and approximately 24 million kWh of natural gas annually through 2038.

Quantifiable outcome

• 2,400 km of gas distribution network operated reliably across the Rhein-Sieg region, Rommerskirchen, Mettmann, and Freudenberg.
• +2 more outcomes

Named customers4 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

Integration4 records

Feature3 records

Partnerships

Six partnerships are on record, tiered minor and core.

• dasdigidings e.V.minorGTM or Marketing Partner · 25 April 2025RSN supported an Easter holiday IoT bootcamp for students from Gymnasium am Oelberg in Königswinter. Dasdigidings e.V. provided expert guidance for students to develop IoT projects including sensor systems, traffic light circuits, and environmental monitoring solutions.
• Gemeindewerke Ruppichteroth GmbH (GWR)coreStrategic or Co-development Partner · 28 November 2024Extended gas network lease contract (Pachtvertrag) until December 31, 2038. The original contract ran until 2028. This extends the partnership for another 10 years, covering approximately 450 house connections and ~24 million kWh annual gas volume.
• Stadtbetriebe Siegburg AöRcoreStrategic or Co-development Partner · 21 November 2024RSN won a Europe-wide tender to take over street lighting operations management (Betriebsführung) for Stadtbetriebe Siegburg AöR from late 2024. This contract covers over 4,000 streetlights and includes plans for LED modernization and digital control systems rollout in 2025.
• Westnetz GmbHcoreStrategic or Co-development Partner · 1 January 2015RSN has leased its electricity distribution network to Westnetz GmbH. RSN operates, plans, and builds the electricity distribution network on behalf of Westnetz in Siegburg and Niederkassel. Westnetz acts as the responsible network operator under this arrangement. This is a long-term operational partnership central to RSN's electricity operations.
• rhenag Rheinische Energie AGcoreStrategic or Co-development PartnerRSN is a 100% subsidiary of rhenag Rheinische Energie AG, Köln. The company emerged from rhenag's network business in 2014/2015. Rhenag provides corporate services, HR (careers portal), and brand association. RSN represents rhenag's network operations subsidiary.
• NetConnect Germany GmbH & Co.KG (NCG)coreTechnology or IntegrationMarket area responsible party (Marktgebietsverantwortlicher) for both L-Gas and H-Gas market areas in RSN's network region. This is a regulatory market structure relationship required under German energy law for gas market organization.

Scale indicators11 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• EWE NETZ GmbH: Regional gas and electricity distribution network operator in northwestern Germany, comparable to RSN in scale, regulatory framework, and multi-utility network operation under the same Anreizregulierung regime.
• Bayernwerk Netz GmbH: Bayernwerk operates regional gas and electricity distribution networks in Bavaria, comparable to RSN's regional gas distribution franchise with similar regulatory drivers and smart meter rollout obligations.
• LEW Verteilnetz GmbH: Regional electricity and gas distribution network operator in Bavaria, comparable in size to RSN with similar multi-utility network operations and regulatory exposure.
• Westnetz GmbH: RSN's electricity network partner and one of Germany's largest distribution network operators. RSN operates and plans its electricity network on behalf of Westnetz in Siegburg and Niederkassel, making Westnetz a direct operational peer for electricity distribution.
• AggerEnergie GmbH: A sister company within the rhenag group providing regional gas and electricity distribution, where RSN's former CEO Dr. Andreas Esser moved to lead. Operates as a regional municipal utility in the same Rhineland footprint.

Regional players

• Mainzer Netze GmbH: Regional gas, electricity, and water network operator serving the Mainz region, comparable in scale (single-digit €B asset base) and regulatory scope to RSN.
• Stadtwerke Düsseldorf AG: Municipal utility serving the Düsseldorf metropolitan area with gas, electricity, water, and district heating distribution — comparable in operating model and customer base (German municipal and commercial end users).

Broad incumbents

• Gasag AG: Berlin-based gas distribution and supply company with a much larger urban network, providing a relevant benchmark for regulated gas distribution in Germany and downstream services around the heat transition.
• Netze BW GmbH: Distribution network operator of EnBW in Baden-Württemberg, larger than RSN but operating under the same regulatory framework for gas and electricity distribution with municipal heat planning expertise.
• Avacon GmbH: A much larger regional network operator across Lower Saxony, Saxony-Anhalt, and Hesse, serving as a broad incumbent for gas, electricity, and heat distribution — a relevant benchmark for utility-style operations at scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/RheinSiegNetz
• LinkedInlinkedin.com/company/rhein-sieg-netz-gmbh

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Rhein-Sieg Netz GmbH