Intelligent battery storage solutions for the grid of the future
We make renewable energy available. For everyone. At any time.
As a pioneer in large-scale battery storage, ju:niz Energy develops, builds and operates high-performance storage solutions.
With forward-looking business models and practical applications, our battery storage systems enable the secure integration of renewable energies into the power grid.
In this way, we contribute to a sustainable and socially balanced energy supply and create measurable progress for society and infrastructure.
Our values
2014
founded
250
MW in operation
1,5
GW in operation target portfolio 2030
Milestones
SMAREG 12: Tolling as a marketing model
Since 2025, SMAREG 12 has been combining tolling for predictable revenues with a merchant share for market opportunities—a new economic model for battery storage.
Learn moreSMAREG 4: Large-scale project from 2022
With a capacity of 60 MW, SMAREG 4 is one of the largest battery storage facilities of its time. Successfully completed in 2022, the project impresses with its special control architecture and close cooperation with the grid operator.
Learn moreFCR battery storage in Garching
Our first FCR battery storage facility in Garching was a milestone in energy storage in 2016. Find out how advanced the project was and what role it plays today as a real-world laboratory for PRL and intraday trading.
Learn moreValue creation
Since 2014, we have developed into a leading player in the large-scale battery storage sector through targeted start-ups and strategic developments.
Our strength lies in the close integration of our business areas – from the acquisition of space and project development to the economically successful operation of our large-scale battery storage systems.
In this way, we are creating the necessary flexibility for a stable, decentralized energy system, relieving the strain on grids and promoting the integration of renewable energies.
Development
Developing business models
Reviewing the economic viability of our projects and modeling market deployment scenarios after implementation.
Greenfield projects
Germany-wide site analysis based on grid topologies, environmental compatibility and building permits.
Brownfield projects
Acquiring, reviewing and implementing projects in the partial stage.
Grid and building rights
Securing grid connections and obtaining building rights.
Project implementation
Technology design and system configuration:
Designing our projects according to defined standards for optimized, economical, and long-term operation.
Project construction and commissioning: <0>
Supporting all construction phases from the initial excavation to commissioning and grid connection. Our project managers are always closely attuned to the pulse of the project.
Technical operation – O&M
Preventive maintenance and rapid troubleshooting ensure high availability and reliability for our marketing partners. So that flexibility is available in the energy grid when it is needed.
Marketing
Revenue-optimized operating strategies in the day-ahead, intraday and balancing energy markets in conjunction with a broad network of marketing partners secure our revenues for financing purposes.
Risk protection and resilience: Our assets increase resilience to grid bottlenecks or generation outages. Large-scale storage systems in the grid help to replace fossil backup systems and reduce CO2 emissions.
M&A and Financing
Targeted acquisition of development-ready projects in a market with new regulatory requirements.
With our technical expertise and EQT’s financial strength, we secure financing, implementation, and portfolio integration. This allows project owners to benefit from secure margins, existing grid connections are maintained, and the energy system gains much-needed flexibility.
We bring your project to success.
ju:niz buys and develops battery storage projects with strong financing, local expertise and fast processes – from initial contact to completion in just a few weeks.
Benefit from flexible structures, reliable partnerships and an experienced team that will get your project safely to the finish line.
Contact us now and shape the future of energy together.
Career at ju:niz
Shape the future of energy
Become part of a committed team that is actively driving forward the energy transition and taking responsibility.
At ju:niz Energy, you can expect modern workplaces, real development opportunities and an open corporate culture in which your ideas count.
