Erenja AG & Co. KG

What Erenja AG & Co. KG does

Erenja AG & Co. KG is a German retail energy provider headquartered in Gelsenkirchen, North Rhine-Westphalia, operating as a 100% subsidiary of the regional utility GELSENWASSER AG. Founded in 2021 through the consolidation of three predecessor sales entities (GELSENWASSER AG, NGW GmbH, and WESTFALICA GmbH) and unified under a single brand by May 2023, Erenja supplies 100% renewable electricity, natural gas, heating electricity for heat pumps and storage heaters, and dedicated EV charging electricity to over 100,000 residential and commercial customers across Germany. Its statutory role as Grundversorger in more than 38 municipalities across North Rhine-Westphalia and Lower Saxony provides a regulated default-supply customer base, complemented by nationwide offerings opened up via digital channels.

The company's product surface spans four core tariffs (Ökostrom 12, Ökostrom 24, Ökostrom 12 Mini, and the Dynamischer Stromtarif exchange-linked tariff), natural gas contracts with fixed or flexible pricing, regulated Grund- und Ersatzversorgung, and specialized products (Öko Heizstrom with §22 EnFG surcharge privilege, Öko Ladestrom for wallbox users). Underlying technology consists of a SAP UI5-based Online-Kundenportal for 24/7 self-service, an iAdvize AI chatbot on Microsoft Azure OpenAI, WhatsApp Business integration, and Ibexa DXP for content management. Distribution combines five physical customer offices (Gelsenkirchen, Lüdinghausen, Bad Oeynhausen, Petershagen, Weeze), dedicated B2B and B2C phone lines, the corporate website erenja.de, and an affiliate partnership with Balkonstrom® for balcony solar.

Erenja operates a dual GTM model: direct-to-consumer for residential customers via the website, online portal, and customer offices; and a sales-led motion for business customers with dedicated account managers, an Energiecontracting service (planning, financing, and operating customer energy systems), and a Price Alarm service that monitors wholesale markets against customer-set targets. Revenue streams are overwhelmingly subscription/recurring (commodity supply tariffs billed monthly or annually), with smaller contributions from referral/affiliate commissions (Balkonstrom®) and professional-service fees (THG quota registration for EV owners). The company is privately held, with no external equity investors or public listing, and operates with a lean team of approximately 28 employees, leveraging group-level infrastructure from GELSENWASSER AG for grid access, energy trading, and back-office operations.

Name

Erenja AG & Co. KG

Legal name

Erenja AG & Co. KG

Website

https://erenja.de

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

Erenja AG & Co. KG is a Gelsenkirchen-based retail energy provider and 100% subsidiary of GELSENWASSER AG, supplying 100% renewable electricity, natural gas, heating electricity, and EV charging tariffs to over 100,000 residential and commercial customers across Germany.

Ownership category

akta.pro rank

Headquarters

HQ city

Gelsenkirchen

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Supply (Ökostrom): Recurring subscription revenue from supplying 100% green electricity to residential and commercial customers across Germany. Tariffs include Ökostrom 12 (12-month contract), Ökostrom 24 (24-month contract with price guarantee), Ökostrom 12 Mini (optimized for low consumption), and a dynamic tariff linked to exchange prices.
2. Natural Gas Supply (Erdgas): Recurring revenue from natural gas supply to residential and commercial customers. Covers standard gas contracts as well as basic and replacement supply (Grund- und Ersatzversorgung) for households without an active contract.
3. Basic and Replacement Supply (Grund- und Ersatzversorgung): Regulated supply for customers without an active energy contract. Automatically applies when a customer moves in or their previous contract ends. Erenja is the statutory basic supplier in numerous municipalities in North Rhine-Westphalia and Lower Saxony.
4. Heating Electricity (Öko Heizstrom): Specialized electricity tariffs for heat pumps and storage heaters, offering preferential rates and benefiting from the heat pump electricity surcharge privilege (Umlagenprivilegierung) under Section 22 of the Energy Financing Act (EnFG).
5. EV Charging Electricity (Öko Ladestrom): Dedicated electricity supply for electric vehicles via wallbox and separate meter, using off-peak nighttime rates for cost efficiency, sourced from 100% renewable energy.
6. Energy Contracting: Erenja plans, finances, and operates energy systems (e.g., heating systems) for business customers under a contracting model, eliminating upfront investment risk for customers.
7. Referral / Affiliate Revenue: Revenue generated through affiliate referrals to Balkonstrom® for balcony solar installations. Erenja earns referral income when customers purchase Balkonkraftwerk kits using the Erenja30 discount code.
8. THG Quota Service: Erenja helps EV owners register and monetize their Treibhausgas (THG) quota, earning a service fee for facilitating the registration process with regulatory bodies.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels6 records

Core offering

Erenja AG & Co. KG supplies 100% renewable electricity (Ökostrom), natural gas (Erdgas), eco heating electricity (Öko Heizstrom) for heat pumps and storage heaters, and eco EV charging electricity (Öko Ladestrom) to residential and business customers across Germany. The company also provides energy contracting, regulated default supply, THG quota registration for EV owners, and balcony solar referrals. It operates as a wholly-owned subsidiary of GELSENWASSER AG, serving over 100,000 customers nationwide.

Product overview

Erenja AG & Co. KG is a German energy utility and subsidiary of GELSENWASSER AG that operates as a multi-product energy retail company. Its portfolio spans four core energy products — Ökostrom (100% renewable electricity), Erdgas (natural gas), Öko Heizstrom (eco heating electricity for heat pumps/storage heaters), and Öko Ladestrom (eco EV charging electricity) — supplemented by regulated Grund- und Ersatzversorgung (default supply), B2B electricity and gas solutions, Energiecontracting, and the Balkonkraftwerk affiliate offering. A SAP UI5-based Online-Kundenportal provides self-service for account management, meter reading submission, and invoicing, accessible alongside local customer offices in five cities. The Erenja-Magazin content platform and Newsletter serve as informational touchpoints. The company serves both residential and business customers Germany-wide, originally formed in 2021 from the consolidation of three regional energy distributors under the GELSENWASSER AG group.

Differentiator

Problem solved

Functional benefit

Products and services

• Ökostrom (Eco Electricity)

Quantifiable outcome

• A 1°C reduction in room temperature can reduce heating energy consumption by approximately 6%
• +1 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Balkonstrom®coreGTM or Marketing Partner · 1 January 2019Erenja partners with Balkonstrom® to offer balcony solar (Balkonkraftwerk) installations to its customers. Balkonstrom® provides plug-and-play solar kits, expert installation consultation, and storage solutions. Erenja markets this offering to its customer base and earns referral commissions when customers purchase using the Erenja30 discount code. Balkonstrom® reports over 50,000 satisfied customers and offers products made in Germany with quality and safety certification.
• BRAUCO Rohr- und Umweltservice (Gelsenwasser AG)minorGTM or Marketing PartnerBRAUCO is a subsidiary of Gelsenwasser AG providing drain and environmental services. Erenja recommends BRAUCO to customers experiencing plumbing or drainage issues. Erenja customers receive a 10% discount (code Erenja10) on BRAUCO services, including drain cleaning, pipe maintenance, and related services offered at fixed prices.
• iAdvize GmbHcoreTechnology or IntegrationiAdvize provides the AI-powered chatbot and live chat infrastructure on Erenja's website. iAdvize uses Microsoft Azure OpenAI and Amazon Web Services (AWS) as sub-processors for conversational AI functionality. The chatbot supports customers 24/7 and routes complex queries to human agents.

Scale indicators5 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• EnBW Energie Baden-Württemberg AG: Large German integrated utility with nationwide retail electricity, gas, and e-mobility offerings; competes with Erenja in residential supply and increasingly in heat-pump and EV tariffs.
• E.ON Energie Deutschland GmbH: One of Germany's largest multi-utility suppliers offering electricity, gas, heat-pump tariffs and EV charging; broader portfolio but overlapping residential and SME supply with Erenja.
• Vattenfall Europe Sales GmbH: Major incumbent retailer offering green electricity, gas and heating tariffs across Germany; broad incumbent comparable to Erenja's nationwide residential supply footprint.

Others

• Check24 Vergleichsportal: Leading German energy price-comparison platform that drives customer switching decisions and is a key acquisition channel for Erenja's competitors; ecosystem participant rather than direct supplier.
• Verivox GmbH: Major German energy and telecom comparison portal influencing tariff switching; relevant ecosystem channel affecting Erenja's customer acquisition funnel rather than a direct supplier competitor.

Direct peers

• Naturstrom AG: German cooperative-owned renewable energy supplier offering green electricity and gas to households and businesses; directly comparable as a values-led, renewable-only retailer.
• Lichtblick SE: One of Germany's largest 100% renewable electricity and gas retailers with strong digital customer portal; directly competes with Erenja in green residential and SME supply.
• Octopus Energy Germany: Digital-first renewable electricity supplier with a dynamic exchange-linked tariff in Germany; directly comparable to Erenja's Ökostrom and Dynamischer Stromtarif offerings targeting residential customers.
• Tibber Deutschland: App-based dynamic-tariff electricity supplier in Germany; competes directly with Erenja's Dynamischer Stromtarif and digital-first residential proposition.

Regional players

• Stadtwerke (municipal utilities, e.g., Stadtwerke München, SWK): Regional municipal utilities operate as statutory Grundversorger in their territories and offer residential green electricity and gas; directly comparable to Erenja's role as Grundversorger in 38+ NRW/Lower Saxony municipalities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/erenja

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Erenja AG & Co. KG