What ECO STOR does

ECO STOR GmbH is a German-Norwegian privately-held developer, builder, and operator of grid-scale lithium-ion battery energy storage systems (BESS) headquartered in Kirchheim near Munich, Germany. The company controls the full value chain from site development and construction through long-term operations management, operating at the interface between distribution and transmission grids. Its technology stack is built on a standardized 238 MWh per-site template scalable to over 700 MWh for flagship installations, complemented by proprietary software capabilities including a Digital Twin for grid-bottleneck prediction, a Storage Monitor for real-time performance tracking, a Dunkelflaute Simulator for low-renewable-generation period planning, and Data Science capabilities for market optimization.

Revenue is generated through two principal streams: (i) turnkey development and construction of BESS facilities for infrastructure investors and financial partners (with major project financing demonstrated via Banco Santander and NORD/LB for the 300 MW Förderstedt project), and (ii) long-term operations management that optimizes asset participation across day-ahead, intraday, and balancing power markets. Commercial structure relies heavily on multi-year Flexibility Tolling agreements (e.g., a five-year tolling with Next Kraftwerke covering 80% of Förderstedt capacity, with Shell Energy Europe providing hedging). The go-to-market is exclusively enterprise-direct, targeting utilities, TSOs/DSOs (E.ON, SH Netz, 50Hertz), energy traders (Next Kraftwerke, Shell), and infrastructure/financial investors (X-ELIO, Nature Infrastructure Capital), with active engagement in Bundesnetzagentur processes (AgNes, Flexible Connection Agreements) to shape the regulatory framework for grid storage.

The company's portfolio spans operational facilities from 8 MWh (Sulzberg) to 238 MWh (Bollingstedt), with the 716 MWh Förderstedt facility — Germany's largest BESS project — under construction as of 2025. The stated strategic target is 30 sites totaling 10 GWh of installed capacity across Germany by 2030, representing roughly a 20x scale-up versus current operational footprint.

Name

ECO STOR

Legal name

ECO STOR GmbH

Website

https://eco-stor.de

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

51–100 employees

Short description

ECO STOR GmbH is a German-Norwegian developer, builder, and operator of grid-scale lithium-ion battery storage systems across Germany, providing full value chain services from site development through long-term operations management for utilities, grid operators, and energy traders.

Ownership category

akta.pro rank

Product category

Battery Energy Storage Systems

NAICS

Electric Power Generation (22111), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911)

akta.pro primary industry

Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)

akta.pro secondary industries

BESS EPC, Integration & Commissioning (EUAFAAAB), BESS Operations, Maintenance & Asset Performance Management (APM) (EUAFAAAG), BESS Market Participation & Trading Services (Ancillary/Capacity/Arbitrage) (EUAFAAAL), BESS Financing, Insurance & Contracting (Tax Equity, PPA/Tolling, Warranties) (EUAFAAAI)

Keywords

• Battery energy storage
• Grid-scale storage
• Renewable integration
• Battery storage development
• Energy storage operations

Headquarters

HQ city

Kirchheim Bei München

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Battery Storage Development and Construction: ECO STOR develops, constructs, and operates large-scale battery storage projects across Germany. The company generates revenue by developing turnkey storage facilities and selling or operating them for investors and partners. Each system typically has a standard capacity of 238 MWh, scalable to 300 MWh.
2. Operations and Management Services: ECO STOR provides operational management of storage power plants, optimizing participation in electricity markets including day-ahead, intraday, and balancing power markets. The company operates storage systems to maximize price spreads on spot markets.
3. Tolling Agreements: Long-term Flexibility Tolling agreements where commercial operators like Next Kraftwerke optimize storage assets across energy markets, providing ECO STOR with stable operational framework and revenue predictability.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels8 records

Core offering

ECO STOR develops, constructs, finances, and operates large-scale lithium-ion battery energy storage systems (BESS) connected at the distribution-transmission grid interface across Germany. The company offers a full vertical value chain from site development and construction to operational management of storage power plants, leveraging proprietary Digital Twin, Storage Monitor, Dunkelflaute Simulator, and Data Science capabilities for grid-supportive optimization and electricity-market participation.

Product overview

ECO STOR is a German-Norwegian battery storage developer that designs, builds, and operates large-scale lithium-ion battery energy storage systems (BESS) across Germany. The company offers a comprehensive product portfolio centered on grid-scale battery storage parks (Batteriegroßspeicher) with standard 238 MWh capacity, scalable to over 700 MWh for larger projects. Supporting technologies include the proprietary Digital Twin for grid bottleneck prediction, the Storage Monitor for real-time performance tracking, and Data Science capabilities for market optimization. Major projects include ECO POWER TWO (Schuby, 238 MWh) and ECO POWER THREE (Förderstedt, 716 MWh). The company also provides grid operations management through a dedicated dashboard and addresses Dunkelflaute (dark lull) scenarios. ECO STOR operates at the distribution-transmission grid interface, enabling participation in multiple electricity markets including day-ahead, intraday, and balancing power markets.

Differentiator

Problem solved

Functional benefit

Products and services

• Battery Storage Parks (Batteriegroßspeicher) Large-scale lithium-ion battery energy storage systems (BESS) connected at the interface between distribution and transmission grids, enabling participation in multiple electricity markets including day-ahead, intraday, and balancing power. Standard capacity of 238 MWh per site, scalable up to over 700 MWh. Customers include utilities, grid operators, energy traders, and infrastructure investors.
• Storage Monitor (Speichermonitor) Real-time monitoring solution for battery storage systems that tracks performance metrics, state of charge, and operational parameters, enabling high system availability and performance optimization for grid-scale BESS operators.
• Dunkelflaute Simulator / Solutions Simulation tool and solutions addressing the 'Dunkelflaute' (dark lull) phenomenon when wind and solar generation is low, ensuring electricity from renewable sources remains available during these periods through storage operations planning.
• Speicherbetriebs-Dashboard (Grid Operations Dashboard) First storage operations dashboard for large-scale battery storage systems, providing real-time visibility into storage operations and system performance for operators and stakeholders.

Quantifiable outcome

• Grid bottleneck prediction enables optimal storage-grid coordination, avoiding redispatch costs
• +4 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability4 records

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• E.ON (E.ON Netzbetreiber)coreStrategic or Co-development Partner · 18 June 2026ECO STOR collaborated with E.ON to develop and test Flexible Connection Agreements (FCAs) at the Bollingstedt project. This partnership established a nationwide standard for flexible grid connections adopted by all E.ON grid operators covering 65% of Germany's area.
• Clifford ChanceminorImplementation/ SI/ Consulting Partner · 15 June 2026Legal advisor to lenders for the Förderstedt project financing transaction.
• Hogan LovellsminorImplementation/ SI/ Consulting Partner · 15 June 2026Legal counsel to ECO STOR for the Förderstedt project financing.
• Schleswig-Holstein Netz (SH Netz)coreStrategic or Co-development Partner · 5 June 2026Partnership with SH Netz to test and implement Auslastungsmonitoring (ALM) and Flexible Connection Agreements (FCAs) at the Bollingstedt facility. Successfully demonstrated faster battery storage grid integration without major network expansion.
• AmperecloudcoreTechnology or Integration · 5 June 2026Amperecloud Platform integrated into Schuby facility (238 MWh) for centralized, manufacturer-independent monitoring. Provides high-resolution data monitoring, intelligent alarms, automated reports, and integrated maintenance management.
• Next KraftwerkecoreStrategic or Co-development Partner · 2 June 2026Five-year Flexibility Tolling Agreement for Förderstedt project (300 MW). Next Kraftwerke handles Cross Market Optimization across Day-Ahead, Intraday, and balancing power markets. Tolling covers 80% of capacity with 20% merchant exposure.
• Shell Energy EuropeminorStrategic or Co-development Partner · 2 June 2026Shell subsidiary providing long-term hedging and risk management for Next Kraftwerke's optimization of ECO STOR's Förderstedt storage facility.
• 50Hertz (Netzbetreiber)coreStrategic or Co-development Partner · 2 June 2026Grid operator for Förderstedt area. ECO STOR signed flexible grid connection agreement with 50Hertz, incorporating restrictions like ramp limits and ancillary service limits into operational optimization.
• EnteliosminorStrategic or Co-development Partner · 21 November 2024Partnership announced November 2024 with Entelios and enspired for energy storage optimization and market participation.
• Bremer LloydminorOthersLogistics partner for the Förderstedt project, handling the transport of approximately 300 system units (battery and inverter containers) for the 300 MW / 700+ MWh facility.
• Blue Water ShippingminorOthersLogistics partner for Förderstedt project, coordinating transport of XXL-format battery units from production to construction site.

Scale indicators12 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Rolls-Royce (Power Systems / mtu Energy Storage): Industrial conglomerate with a growing utility-scale BESS offering (mtu Energy Pack); comparable to ECO STOR as an established large player entering the same European grid-scale storage market.
• Tesla Energy (Megapack): Largest global supplier of utility-scale Li-ion BESS (Megapack), increasingly acting as IPP/developer; overlaps directly with ECO STOR on grid-scale storage project competition in Germany and broader Europe.
• BYD Energy Storage: Chinese vertically integrated BESS OEM and IPP with growing European project pipeline; competes with ECO STOR on utility-scale BESS supply, pricing and project development across European markets.
• Sonnen (a Shell company): German-headquartered residential and commercial storage player now owned by Shell; comparable to ECO STOR as a Germany-based storage provider with shared ecosystem partners (e.g., Shell Energy Europe), though focused on smaller-scale BESS rather than utility-scale.

Direct peers

• Fluence Energy: Global leader in utility-scale BESS with integrated hardware, software (Nispera) and IPP/project development arms; directly comparable to ECO STOR as a turnkey BESS developer/operator competing for the same utility and grid-services mandates in Europe.
• Wärtsilä Energy Storage: Nordic-headquartered (Finland) provider of grid-scale BESS solutions and energy-storage projects across Europe; comparable to ECO STOR as a utility-scale BESS integrator and project developer with similar grid-services and trading focus.
• Saft (TotalEnergies): French battery manufacturer (subsidiary of TotalEnergies) active in utility-scale BESS and grid-storage projects across Europe; comparable to ECO STOR in target customers (TSOs/DSOs) and project scale.
• Nidec ASI (Nidec Industrial Solutions): Italian-headquartered BESS and PCS provider active in European grid-scale storage projects; comparable as an integrated BESS developer offering hardware, controls and grid-services optimization similar to ECO STOR's stack.

Emerging players

• Energy Vault: Swiss-listed developer of utility-scale energy storage projects, combining Li-ion and proprietary gravity-based technology; comparable to ECO STOR as a project-developer peer targeting European and global utility customers.

Others

• SMA Solar Technology: German inverter and grid-services platform provider (Sunny Central Storage) closely tied to the German BESS ecosystem; adjacent peer — supplies enabling power-conversion technology that ECO STOR's storage projects depend on and competes for similar utility customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/eco-stor-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 ECO STOR