What Esterion does

Esterion GmbH is a Berlin-headquartered (with a secondary office in Aachen) German software vendor founded in 2015 that builds and sells the esterion Suite, a mass-data-capable automation platform for energy utilities (Energieversorger) in the DACH region. The platform is built on a modular plugin architecture with REST and SOAP web service interfaces, and orchestrates thousands of processes through job groups and time controls. Its modules cover time series management, graphical workflow design, AI/ML-based forecasting, mathematical and non-mathematical optimization, KPI monitoring and test routines, plus a stand-alone Electricity and Gas Price Calculator SaaS for commercial, individual, and bundled customers (RLM/SLP) without market-location limits.

Esterion serves more than 50 energy supply companies, with publicly named customers including Trianel, Hamburg Energie, RWE, ES FOR IN SE, syneco, and SOPTIM AG. The company is privately held, operates with 1–10 employees, holds a TÜV-certified ISMS under ISO 27001, and is represented by managing director Stefan Heimel. Revenue is generated through annual quote-based SaaS subscriptions and self-hosting (on-premise) licenses for enterprise utilities, distributed via direct sales (website contact forms) and sales-partner integration in the price calculator. No external funding rounds, parent company, acquisitions, or partnerships are evidenced in the available source material.

Name

Esterion

Legal name

esterion GmbH

Website

https://esterion.de

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

Esterion GmbH (Berlin, founded 2015) builds the esterion Suite, a modular, mass-data-capable automation platform with AI-based forecasting, workflow design, optimization, and price calculation, sold as SaaS or on-premise to energy utilities in the DACH region.

Ownership category

akta.pro rank

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. SaaS Subscription: Cloud-hosted subscription solution for energy utilities providing automated software platform access with pricing based on usage and customer count.
2. Self-Hosting License: On-premise deployment option allowing customers to host the software platform on their own infrastructure, likely with perpetual or subscription licensing.
3. Sales Partner Integration: Integration of sales partners into the price calculator enabling co-selling and revenue sharing with distribution partners.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

Esterion sells the esterion Suite, a highly automated, mass-data-capable software platform for energy utilities (Energieversorger). It provides time series management, graphical workflow automation, AI-based forecasting, mathematical optimization, and KPI monitoring as modular plugins, with a separate electricity and gas price calculator SaaS for generating customer proposals. The platform is available as a self-hosted on-premise solution or as a SaaS subscription.

Product overview

Esterion offers the esterion Suite as its core product—a highly automated, mass data-capable software platform for energy utilities (Energieversorger). The platform consists of integrated modules including Time Series Management, Workflows and Automation, AI and Forecasting, Optimization, and KPI/Key Figures monitoring. An additional module, the Electricity and Gas Price Calculator, operates as a SaaS solution for business customers. The suite supports both self-hosting and SaaS deployment models and features a modular plugin architecture with REST/SOAP interface integration capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• esterion Suite: The highly automated and mass data capable software platform for energy utilities (energyversorger). Features include time series management, workflows and automation, AI and forecasting, optimization, and KPI monitoring. Available as self-hosting or SaaS solution.

Products and services

• esterion Suite A highly automated, mass-data-capable software platform for energy utilities (Energieversorger) that orchestrates thousands of processes via job groups and time controls, with modular plugins for time series management, workflows and automation, AI and forecasting, optimization, and KPI monitoring. Available as a self-hosted on-premise solution or as a SaaS subscription, with REST and SOAP web service interfaces for integration.
• Strom- und Gas Preisrechner (Electricity and Gas Price Calculator) A SaaS solution for energy utilities that enables simple proposal creation for branch operators and bundled customers without limitation of market locations (Marktlokation). Suitable for commercial, individual, and bundled customers with measured consumption or load profiles (RLM and/or SLP), and supports integration of sales partners for co-selling.

Quantifiable outcome

• Reduce processing times and data flows through performance-optimized algorithms

Named customers6 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature8 records

Scale indicators1 record

Recent moves4 records

Expansion highlights4 records

Emerging players

• envelio GmbH: Cologne-based provider of a grid-management and smart-grid platform for distribution system operators. While more grid-focused, envelio shares the DACH energy-IT DNA and the data/optimization architecture approach of Esterion.
• Energy2market (e2m): European provider of flexibility, balancing, and forecasting services for energy markets. Comparable to Esterion in its use of AI-driven forecasting and time-series analysis for energy utilities, though operating more in the flexibility-market layer.
• Schleusenbauer Eduard GmbH: German specialist in metering, submetering, and energy data management software for utilities and property operators. A niche, technically focused player whose energy data management capabilities intersect with Esterion's time series and KPI modules.
• greencom GmbH: German energy-IT vendor offering white-label energy management, IoT, and customer-portal solutions for utilities and energy service providers. Comparable in deploying a modular SaaS platform into the same DACH utility customer base as Esterion.
• Bittner+Krull Softwaresysteme GmbH: German software house providing specialized utility IT solutions for Stadtwerke and municipal energy suppliers. Comparable as a small, vertically focused software provider in the same Energieversorger niche as Esterion.

Broad incumbents

• Wilken GmbH: German software vendor with an energy-industry suite covering billing, CRM, and process management for municipal utilities and Stadtwerke. Overlaps with Esterion's price calculator and process automation modules as part of a broader utility ERP/CRM portfolio.
• PSI Software SE: Public German software incumbent with a dedicated Energy Management division offering network control, trading, and energy-management software. PSI is a broad incumbent whose energy portfolio overlaps with Esterion's automation and optimization capabilities at the high end of the market.

Direct peers

• SOPTIM AG: German IT specialist for the energy sector offering software solutions for utilities including forecasting, optimization, and process automation. SOPTIM is the closest direct peer to Esterion in the DACH Energieversorger space and also appears on Esterion's customer reference list, illustrating the overlap.
• KISTERS AG: Aachen-based software provider specializing in energy data management, time series, forecasting, and optimization for utilities and energy traders. Highly comparable to Esterion's time series, forecasting, and KPI modules and a direct competitor in the DACH energy-IT market.
• Robotron Datenbank-Software GmbH: Dresden-based provider of software solutions for the energy industry including utility billing, network data management, and meter data management. Comparable to Esterion in target customers (German utilities) and overlapping in process automation and time series use cases.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Esterion