Stabl Energy

Name

Stabl Energy

Legal name

STABL Energy GmbH

Website

https://stabl.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Battery Energy Storage Systems

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Relay and Industrial Control Manufacturing (335314)

SIC

Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

BESS OEMs (Containerized Systems, Racks, Turnkey Solutions) (EUAFAAAC)

akta.pro secondary industries

Stationary Energy Storage Systems (BESS/ESS Integrators) (IMAGAHAD), BESS Operations, Maintenance & Asset Performance Management (APM) (EUAFAAAG)

Keywords

• Battery storage systems
• Modular multilevel inverter
• Second-life battery storage
• Commercial industrial energy storage
• Battery repurposing solutions

Headquarters

HQ city

München

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Battery Storage Systems (Hardware): Sale of complete battery storage solutions including outdoor containers and Battery Hotel configurations. Systems are sold as 20ft containers with nominal storage capacity of 1,958-1,979 kWh per container and output of 405 kW. Revenue from initial capital equipment sale plus ongoing service contracts.
2. Feasibility Studies: Paid feasibility studies that analyze whether battery storage is worthwhile for a business, including detailed simulations, tailored suggestions for dimensioning, profitability assessments, and clear recommendations for action.
3. Partner Program Services: Comprehensive 360° service package for partners including planning, installation, commissioning, and ongoing after-sales support. Partner portal access, training courses, webinars, and exclusive partner status.
4. Performance Guarantees and Extended Warranties: Performance guarantees of 10 years or 5,000 cycles at 75% remaining capacity, extendable to 12 years or 7,000 cycles, and up to 15 years or 8,000 cycles at 75% remaining capacity.

Pricing tiers

Go-to-market motion4 records

Distribution channels5 records

Marketing channels9 records

Core offering

Stabl Energy designs, manufactures, and sells modular battery energy storage systems (BESS) for commercial and industrial customers, built around a patented Modular Multilevel Inverter that enables safe and efficient integration of second-life and zero-life electric vehicle batteries. Its core hardware offerings are the 20-foot STABL Container (1,958–1,979 kWh / 405 kW) and the Battery Hotel solution for e-fleet operators, complemented by the STABL Cloud monitoring platform and feasibility study services.

Product overview

STABL Energy is a German technology company offering modular battery energy storage systems (BESS) for commercial and industrial applications. The product portfolio centers on two main hardware solutions: the STABL Container (20-foot outdoor battery storage with 1,958-1,979 kWh capacity and 405 kW output) and the Battery Hotel (scalable solution for e-fleet operators). These are powered by the proprietary STABL Modular Multilevel Inverter technology, which replaces conventional central inverters and enables up to 99.4% conversion efficiency. The STABL Cloud provides remote monitoring and over-the-air updates with cell-level analytics. The Power Conversion System (PCS) integrates Cell Monitoring Units, inverter modules, and connection boxes for battery management. Applications include Self-Consumption Optimisation, Peak Shaving & Atypical Grid Usage, and Dynamic Electricity Tariffs & Trading. A Feasibility Study service helps determine storage viability for prospective customers. The company specializes in second-life and zero-life battery repurposing, extending battery lifecycle by up to 67% and reducing CO2 emissions by 70% compared to new batteries.

Differentiator

Problem solved

Functional benefit

Products and services

• STABL Container
• Battery Hotel Scalable, modular storage solution for e-fleet operators that converts decommissioned electric vehicle batteries from their own fleet into stationary storage systems. Delivered as a full service from collection, testing, and processing through integration, supporting peak shaving, self-consumption optimization, and grid fee reduction. Currently piloted with Nobina AB targeting 500 MWh total battery capacity.
• STABL Inverter (Modular Multilevel Inverter) Patented modular multilevel inverter that replaces conventional central inverters and battery management systems. Dynamically interconnects low-voltage battery modules in different states of health, enabling touch-safe operation below 60V, conversion efficiency up to 99.4% (measured at Technical University of Munich), and efficiency loss reduction up to 70% versus conventional systems.
• Power Conversion System (PCS) Smart power conversion system combining Cell Monitoring Unit (CMU), STABL inverter module, and Inverter Connection Box for monitoring, controlling, and protecting batteries. Includes state-of-charge management, dynamic switching, redundant security, and cloud connectivity, with deep cell-level battery analytics in the STABL Cloud.
• STABL Cloud Cloud-based monitoring and control platform for STABL battery storage systems. Enables remote monitoring, remote control, and over-the-air updates, providing real-time insights on battery condition, temperature, current, and voltage down to cell level. Data is monitored in real time and sent to the cloud in encrypted form.
• Feasibility Study Analysis service that determines whether an electricity storage system would be worthwhile for a business, including potential savings and optimization options. Based on real data, precise simulations, and individual consumption profiles, with tailored suggestions for dimensioning and clear recommendations for action.

Quantifiable outcome

• 94.6% round-trip efficiency vs. 85% conventional systems
• +8 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Nobina ABcoreStrategic or Co-development Partner · 1 January 2025Strategic partnership with Scandinavia's largest public transport and e-bus fleet operator for Battery Hotel concept development. Pilot project to repurpose electric bus batteries from real-world fleet operations as stationary second-life battery storage systems at depot locations. Focus on depot energy optimization, electricity market participation, and balancing services. Target of 500 MWh total battery capacity.
• Greenflash GmbHcoreImplementation/ SI/ Consulting PartnerPartnership with Greenflash for combined PV and battery storage solutions. Greenflash installed 2 MWp photovoltaic system on Giga Coating and System Trailers halls, controlled by GreenX1 Controller. Joint planning and installation of battery storage systems.
• Partner Program NetworkcoreChannel Partner/ Reseller/ DistributorPartner program including Boewing, Energielenker, e2m, ES Power, Greenflash, Levonova Energy, Maxx Solar, Outarky, Setrade, SM Energy and other specialist partners for sales, installation, and service of battery storage systems.
• Technical University of MunichcoreStrategic or Co-development PartnerAcademic spin-off origin. Technology developed through research projects at Technical University of Munich, University of the Federal Armed Forces in Munich, and Osnabrück University of Applied Sciences. Conversion efficiency tested in scientific studies and master's thesis at TUM.
• University of the Federal Armed Forces MunichminorStrategic or Co-development PartnerAcademic partner for research projects that led to company founding and technology development.
• Osnabrück University of Applied SciencesminorStrategic or Co-development PartnerAcademic partner for research projects that led to company founding and technology development.

Scale indicators13 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• B2U Storage Solutions: US-based developer of large-scale stationary energy storage using repurposed second-life EV batteries. Directly comparable to STABL's Battery Hotel concept, both targeting grid-scale and C&I applications with heterogeneous battery chemistries.
• Connected Energy: UK-based provider of second-life battery energy storage systems (E-STOR) for commercial and industrial customers. Closest European peer to STABL with similar focus on repurposed EV batteries for grid-support applications.

Broad incumbents

• Sungrow: Leading Chinese inverter and BESS provider with strong presence in European C&I storage. Competes with STABL on inverter efficiency and integrated containerized systems across DACH.
• Sonnen (Shell): German residential and C&I storage provider now owned by Shell. Direct overlap in the DACH market with focus on self-consumption optimization and PV-coupled storage.
• Tesla Energy (Megapack): Tesla's utility-scale BESS product with global deployments. Sets pricing and reliability benchmarks that all C&I and grid-scale storage providers, including STABL, must position against.
• Fluence Energy: Global leader in utility-scale and C&I battery energy storage with the Gridstack and Edgestack product lines. Represents the scaled incumbent STABL must compete against for large C&I and grid-support projects.
• Wartsila Energy Storage (GridSolv): Global energy storage and optimization platform serving utilities and C&I customers. Competes with STABL for large C&I and grid-services projects, though typically at higher power ratings.

Emerging players

• Relectrify: Australia-based company developing advanced battery management technology that enables second-life battery use. Competes with STABL at the cell-management/integration layer rather than full containerized systems.
• Energy Vault: Public company developing gravity and hybrid storage solutions. Less direct overlap but competes for capital and customer mindshare in the stationary storage market STABL targets.

Others

• Nuvve: V2G and fleet energy management company. Comparable to STABL's Battery Hotel strategy through its focus on EV fleet battery monetization, though with a different technical approach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@stablenergy
• LinkedInlinkedin.com/company/stablenergy
• Instagraminstagram.com/stablenergy
• Xx.com/stabl_energy

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles18 records

Funding overview

Funding rounds4 records

Investors5 records

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 Stabl Energy