Status:
In Betrieb
Location:
Ahlerstedt-Oersdorf

Ahlerstedt battery storage (Oersdorf)

Large-scale battery storage project to stabilize the regional power grid and prepare for commercial operation.
Battery storage system under construction in Oersdorf
frameworks

The project location is characterized by a high supply of renewable energy combined with limited grid capacity. In order to cushion peak loads and provide additional flexibility, it was necessary to set up a battery storage solution. The project addresses this initial situation with a scalable and long-term storage infrastructure.

15 MW

power

30 MWh

storage capacity

1.300 m²

Site area

06.01.2026

Start of operation
Challenge

The implementation of the project required the simultaneous consideration of technical, regulatory and economic requirements.

Network integration

The secure integration of the battery storage system into the existing power grid required precise technical design and close coordination with the grid operator.

Regulatory requirements

Approval processes and grid connection conditions had to be considered early on in order to avoid delays.

economic efficiency

The battery storage system had to be able to operate economically in the long term, even under changing market conditions.

Operational safety

Stable operation required clear processes, continuous monitoring and active control of the plant.
Timeline

The project was implemented in several consecutive phases with clear milestones.

19.02.2025

Site planning and contract conclusion

Completion of site planning and final contractual agreement with the property owner as a basis for project implementation.

Terra One - Project Process

18.04.2025

Site ready for construction

The site is fully prepared and all contractual and organizational requirements for the start of construction have been met.

Terra One - Project Process

11.06.2025

Groundbreaking and start of construction

Official start of construction and start of implementation of the battery storage system on site.

Terra One - Project Process

18.09.2025

Delivery and installation of battery containers

Delivery and installation of eight battery containers, including technical integration at the site.

Terra One - Project Process

05.11.2025

Energizing the plant

Completion of foundation work and initial energization of the battery storage system.

Terra One - Project Process

18.12.2025

Performance testing and initial operation

Carrying out performance and functional tests and charging and discharging the battery storage system for the first time.

Terra One - Project Process

06.01.2026

Start of commercial operations

Start of regular commercial operation of the battery storage system in the energy system.

Terra One - Project Process
Impact

The project has a demonstrable effect on grid operation and energy flow.

The project makes a measurable contribution to stabilizing the regional power grid and improving the integration of renewable energies.

15 MW

Since commissioning, the battery storage system has been actively traded in several energy markets via the Terra One platform.
In this way, you can react flexibly to price signals and continuously increase revenue potential.

30 MWh

Optimizing battery storage across multiple markets — in combination with regional PV generation marketed by Terra One in the same grid area. Generation, storage and marketing are intelligently intertwined.
Project roles & partners

optimization

Terra One

Owners & Project Developers

Terra One

project development

Until “ready-to-build” by Terra One

Construction/Operation/ Maintenance

be.storaged GmbH

Network connection & coordination

EWE NETZ GmbH

funding

Varengold Bank

“Terra One is positioning itself as a leading innovator in the field of battery storage and is making a decisive contribution to stabilizing the energy revolution. ”

Jürgen Flauger & Klaus Stratmann
journalists
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Let us evaluate your battery storage project.

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Maximilian Bodewein
Maximilian Bodewein
Head of Development
Terra One - Lukas Giza Lead Project Development & Intelligence
Lukas Giza
LEAD PROJECT DEVELOPMENT & INTELLIGENCE
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