Stadtwerke Merzig

What Stadtwerke Merzig does

Stadtwerke Merzig GmbH is a municipal utility company (Stadtwerke) headquartered in Merzig, Saarland, Germany, fully owned by the City of Merzig. It supplies electricity, natural gas, drinking water, and district heating to residential (Privatkunden) and business/industrial (Geschäftskunden) customers within its regional concession area, and operates distribution networks through the jointly controlled Netzwerke Merzig GmbH subsidiary. Service is delivered via a regional customer center, an online self-service portal (contract management, meter reading, billing), phone hotlines, and direct field account management for B2B clients.

Its core technology portfolio spans multi-vector renewable generation: the Solarpark Merchingen/Brotdorf hybrid Agri-PV plant (8.5 MW combining conventional south-facing modules with vertical bifacial Agri-PV modules from Next2Sun Technology, commissioned July 2025, ~9 GWh/year for ~2,500 households); two wind parks operated via the 49.2%-owned Windenergie Merzig GmbH JV (Merchingen II with three Vestas V112 turbines and Silwingen/Büdingen with three Vensys 112 turbines, ~16.5 MW combined for ~10,000 households); a 5 MW bio-natural gas plant operated via the 10%-held Bioenergie Merzig GmbH with E.ON Bioerdgas; CHP/BHKW plants with >90% efficiency and high-temperature fuel cells; a wood-chip heating plant (Holzhackschnitzel-Heizwerk Wild III); and the Fellenbergmuehle hydroelectric facility. Notable product adjacencies include Merziger Autostrom, Merziger Solarpaket, PV-Balkonkraftwerk, Wärmepumpen-Direkt-Service, Wärme-Contracting, wallboxes and public charging stations, the Mehrspartenhauseinführung multi-utility building entry, and annual GHG Protocol-aligned greenhouse-gas accounting.

The business model is dominated by recurring regulated tariff income (subscription-style electricity, gas, water, and heat supply), regulated network fees from grid operation (managed services), sale of own-generated renewable electricity into the grid, and B2B contracting (especially district heating and CHP) for public-sector and large commercial anchors. Pricing is not publicly disclosed and is regulated where applicable. The Go-to-Market is direct-to-consumer and direct-to-B2B within the Merzig region; financing has increasingly leveraged community capital, exemplified by a €3 million S-Klima-Sparbrief citizen-participation bond with Sparkasse Merzig-Wadern that was fully subscribed within 3.5 weeks for the Merchingen/Brotdorf project.

Name

Stadtwerke Merzig

Legal name

Stadtwerke Merzig GmbH

Website

https://stadtwerke-merzig.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Stadtwerke Merzig is a municipally owned German utility supplying electricity, natural gas, drinking water, and district heating to residential and commercial customers in the Merzig region of Saarland. It operates multi-vector renewable generation assets including wind, hybrid Agri-PV solar, biogas, CHP, hydroelectric, and biomass heating.

Ownership category

akta.pro rank

Product category

Municipal Utility Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Generation (22111), Steam and Air-Conditioning Supply (221330), Wind Electric Power Generation (221115), Solar Electric Power Generation (221114)

SIC

Cogeneration Services & Small Power Producers (4991), Water Supply (4941)

akta.pro primary industry

Interconnection, Permitting & Grid Services for DERs (EUAMAJAH)

akta.pro secondary industries

EV Charging as DER (Managed Charging, V2G/V2B) (EUAMAJAL), Protection, Metering & Grid Compliance Systems (Relays, Revenue Metering, PQ) (EUAEADAE)

Keywords

• Municipal utility services
• Renewable energy generation
• Drinking water supply
• District heating networks
• E-mobility charging

Headquarters

HQ city

Merzig

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Supply: Supply of 100% eco-electricity to residential and business customers. Includes various tariff options, eco-electricity, heat pump electricity, and EV charging electricity.
2. Natural Gas Supply: Natural gas supply for heating and other applications. Includes biogas blending options.
3. Water Supply: Drinking water supply with high quality standards. Water sourced from local groundwater resources with excellent mineral composition.
4. District Heating: Heat supply through district heating networks, including wood chip heating plant and contracting models.
5. Renewable Energy Generation: Operation of own renewable energy generation facilities including solar parks, wind parks, and biogas plants. Energy is either self-consumed or sold to grid.
6. Grid Operation: Operation and maintenance of electricity and gas distribution networks as regulated infrastructure business.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Stadtwerke Merzig is a municipal utility that supplies electricity (including 100% eco-electricity, heat pump electricity, and EV charging electricity), natural gas, drinking water, and district heating to residential and business customers in the Merzig region of Saarland, Germany. The company also operates its own renewable energy generation portfolio including wind parks, solar parks with hybrid Agri-PV systems, biogas plants, hydroelectric facilities, and combined heat and power plants, plus E-mobility charging infrastructure.

Product overview

Stadtwerke Merzig ist ein kommunaler Energieversorger und Infrastrukturbetreiber mit einem breiten Portfolio an Energieprodukten und -dienstleistungen für Privatkunden und Geschäftskunden. Das Kernangebot umfasst die Stromversorgung (inkl. Ökostrom-Tarife, Autostrom für E-Fahrzeuge, Heizstrom für Wärmepumpen), die Erdgasversorgung sowie die Trinkwasserversorgung. Im Bereich erneuerbare Energien betreibt das Unternehmen Windparks (Merchingen II, Silwingen/Büdingen), den hybriden Solarpark Merchingen/Brotdorf, eine Bioerdgas-Anlage, Blockheizkraftwerke mit Kraft-Wärme-Kopplung, ein Holzhackschnitzel-Heizwerk und das Wasserkraftwerk Fellenbergmühle. Für E-Mobilität werden Wallboxen und Ladestationen angeboten. Bau- und Anschlussservices umfassen Netzanschlüsse und Mehrspartenhauseinführungen. Die digitalen Services beinhalten ein Kundenportal für Vertrags- und Zählerverwaltung sowie Treibhausgasbilanzierungen nach GHG Protocol.

Differentiator

Problem solved

Functional benefit

Products and services

• Strom (Privatkunden) — Electricity Supply for Residential Customers
• Erdgas Angebote und Tarife — Natural Gas Supply
• Trinkwasserversorgung — Drinking Water Supply
• Wärme-Contracting — Heat Contracting
• Holzhackschnitzel-Heizwerk Wild III — Wood Chip District Heating
• Kraft-Wärme-Kopplung (KWK) — Combined Heat and Power (CHP) Supply
• Windpark Merchingen II — Wind Power Generation
• Windpark Silwingen/Büdingen — Wind Power Generation
• Solarpark Merchingen/Brotdorf — Hybrid Agri-PV Plant
• Bioerdgas-Anlage — Biogas Plant
• Wasserkraftwerk Fellenbergmühle — Hydroelectric Plant
• Ladestationen — Public EV Charging Stations
• Wallbox — Private EV Wallbox with Charging Card
• Merziger Autostrom — Special EV Electricity Tariff
• Merziger Solarpaket — Residential PV Roof Package
• PV-Balkonkraftwerk — Balcony PV Mini-System
• Merziger Wärmeservice — Heat Service for Buildings
• Wärmepumpen-Direkt-Service — Heat Pump Electricity Tariff
• THG-Quote — GHG Quota Marketing for EV Owners
• Netzanschluss — Grid Connection Service
• Mehrspartenhauseinführung — Multi-Utility Building Entry
• Kundenportal Merzig — Online Customer Portal
• Stadtwerke Bienen — Biodiversity Beekeeping Program
• Bietzener Heilwasser — State-Recognised Healing Water

Quantifiable outcome

• Approximately 9 GWh/year electricity generation from hybrid PV park
• +4 more outcomes

Named customers6 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core.

• Meiser Solar GmbHcoreTechnology or Integration · 16 September 2024Partner for PV mounting systems. Meiser Solar, based in Schmelz-Limbach (Saarland), is a family-owned company specializing in steel mounting structures for ground-mounted PV installations. They develop, produce, and distribute mounting systems, with approximately 1 GWp of mounting systems produced in 2024 (35,000-40,000 tonnes of material manufactured in Saarland). For the Merchingen/Brotdorf project, they supplied approximately 200 tonnes of material for the south-mounted section.
• Next2Sun Technology GmbHcoreTechnology or Integration · 16 September 2024Technology supplier for the vertical Agri-PV system and plant constructor. Next2Sun, based in Dillingen/Saar, is an international pioneer in vertical Agri-PV with nearly 10 years of experience. They have built Agri-Solarparks with a total capacity of almost 30 MW, with another 33 MW currently under construction. Their vertical system enables less than 1% land coverage and approximately 90% of the area between modules remains cultivable with agricultural machinery.
• Windenergie Merzig GmbHcoreStrategic or Co-development Partner · 1 January 2015Joint venture for wind park operation. Shareholders: Stadtwerke Merzig GmbH (49.2%), BEG Hochwald EG (24.6%), VSE AG (20.0%), Oekostrom Saar GmbH (6.0%). Operates Windpark Merchingen II (9 MW) and Windpark Silwingen/Büdingen (7.5 MW).
• E.ON Bioerdgas GmbHcoreStrategic or Co-development PartnerCo-investor in Bioenergie Merzig GmbH with 90% stake. E.ON Bioerdgas GmbH is the majority shareholder while Stadtwerke Merzig holds 10%. The biogas plant produces approximately 550 m³/h of bio-natural gas for injection into the gas grid, sufficient for about 2,400 households.

Scale indicators19 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Stadtwerke Saarbrücken GmbH: Municipal utility (Stadtwerke) of Saarbrücken, the state capital of Saarland. Closest direct peer as a regional municipal multi-utility in the same German state, providing electricity, gas, water, and district heating to residential and business customers with similar GTM motion and service portfolio.
• VSE AG: Major regional energy company in Saarland and Rhineland-Palatinate, and a 20% JV partner in Stadtwerke Merzig's wind operations. Provides electricity, gas, heat, and energy services across the broader region; comparable as a regional energy infrastructure and supply player with overlapping customer base.
• Energis GmbH: Local energy network operator in Saarland, headquartered in Saarlouis. Operates electricity and gas distribution networks in the same regional market as Stadtwerke Merzig, making it a direct peer in regulated network operations and local energy supply.
• E.ON Bioerdgas GmbH: Subsidiary of E.ON SE and 90% owner of Stadtwerke Merzig's JV Bioenergie Merzig GmbH. Operates bio-methane production and grid injection facilities across Germany, directly comparable as a biogas operator and co-investor in the Merzig bio-methane plant producing 550 m³/h.

Regional players

• Stadtwerke Trier GmbH: Municipal utility of Trier in neighboring Rhineland-Palatinate. Comparable multi-utility structure (electricity, gas, water, heat, e-mobility) with similar municipal ownership and German Stadtwerke operating model, but in a different geography.
• Mainzer Stadtwerke GmbH: Municipal utility of Mainz providing electricity, gas, water, and district heating. Comparable German Stadtwerke with similar service portfolio, customer segments, and municipal ownership structure, though operating in a different region (Rhineland-Palatinate).
• Stadtwerke Bonn GmbH: Larger municipal utility of Bonn operating electricity, gas, water, district heating, and public transport. Comparable multi-utility model with renewable generation and e-mobility initiatives, but serving a larger city in North Rhine-Westphalia.

Emerging players

• Next2Sun Technology GmbH: Germany-based pioneer in vertical bifacial Agri-PV technology with ~30 MW of installed Agri-Solar parks. Technology supplier and project partner for Stadtwerke Merzig's Solarpark Merchingen/Brotdorf, with overlapping expertise in dual-use agricultural solar concepts.

Others

• Meiser Solar GmbH: Saarland-based manufacturer of steel mounting systems for ground-mounted PV installations (~1 GWp annual production). Technology partner for the Solarpark Merchingen/Brotdorf, supplying ~200 tonnes of mounting structure — an ecosystem enabler in the regional solar value chain.

Broad incumbents

• Stadtwerke München GmbH: One of Germany's largest municipal utilities, serving Munich with electricity, gas, district heating, and water, plus major renewable energy investments (e.g., Windkraft Sprakebüll). A larger, established peer demonstrating the scaled multi-utility model with renewable generation that smaller Stadtwerke like Merzig aspire to.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@stadtwerkemerziggmbh8265
• Facebookfacebook.com/swmerzig/?locale=de_DE
• Instagraminstagram.com/stadtwerke_merzig
• LinkedInlinkedin.com/company/stadtwerke-merzig-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries3 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 Merzig