The energy transition brings with it a multitude of challenges, particularly in the areas of grid stability and security of supply. Renewable energies such as wind and solar provide sustainable electricity, but their fluctuating feed-in regularly presents grid operators with major challenges and causes strong fluctuations in our electricity prices. This is precisely where AXSOL and its project partner terralayr come in with their new battery storage project in Celle: With a capacity of 15 MW and a storage capacity of 30 MWh, Lower Saxony’s second-largest battery storage system will be built by the end of 2025.
This battery storage system will play a crucial role in ensuring a stable and future-proof energy supply by compensating for short-term load peaks, reducing frequency fluctuations, and enabling the optimal and cost-efficient use of renewable energies through energy trading. The heart of the system is the innovative AXOS energy management system, which guarantees maximum efficiency and economy thanks to AI-supported control. This project not only underscores AXSOL’s technological leadership, but also demonstrates how intelligent storage technologies can make a significant contribution to making Germany’s power grids fit for a sustainable future.
The project in Celle – A milestone for the energy supply
In Celle, Lower Saxony, a pioneering battery storage project is being built by the end of 2025, which is of great importance for the region and beyond. With a planned capacity of 15 MW and a storage capacity of 30 MWh, this project will be the second-largest battery storage system in the state. The project is representative of the increasing use of innovative storage technologies, which are essential for the energy transition.
AXSOL is assuming full responsibility for this project, from the planning and implementation of the construction measures to the delivery, installation and commissioning of the large-scale battery storage system (EPC). By selecting state-of-the-art components and its intelligent EMS AXOS, AXSOL guarantees a long-term and secure investment. The battery storage system will not only be an important component for grid stabilization, but will also serve as a reference for future projects that focus on sustainable and intelligent energy storage.
Grid stability through advanced energy management
The increasing integration of renewable energies poses complex challenges for grid operators. Solar and wind energy naturally do not supply electricity constantly, which can lead to fluctuations in the power grid. These so-called frequency fluctuations endanger the stability of the power supply and, in the worst case, can even lead to failures.
The project in Celle addresses precisely this challenge: By installing an ultra-modern battery storage system, controlled by AXSOL’s intelligent AXOS energy management system, these fluctuations are efficiently compensated for. The system smooths short-term load peaks, reduces frequency fluctuations in real time and ensures optimized use of renewable energies.
Particularly noteworthy is the advanced control provided by AXOS, which guarantees adaptive, flexible and economical operation thanks to artificial intelligence (AI). The core functions include:
- Real-time analysis for precise adjustment of the charging and discharging cycles to the current demand.
- Automated optimization of performance and economy through intelligent algorithms.
By choosing this innovative approach, AXSOL is not only setting technological standards, but is also making a significant contribution to a sustainable, stable and economically attractive energy supply for the future.
Technological excellence: Battery storage with LFP technology
AXSOL is using state-of-the-art lithium iron phosphate batteries (LFP) for the implementation of the project in Celle, which have been specially optimized for use in stationary storage systems. This battery technology is currently the preferred choice for large-scale storage projects, especially when high safety requirements and long-term reliability are required.
The advantages of LFP batteries speak for themselves:
- Highest safety standards:
The LFP cells used are characterized by particularly high thermal stability. They offer a minimized risk of fires or explosions, which has been confirmed by intensive safety tests (such as nail penetration and crush tests).
- Longevity and economy:
With a service life of over 103,000 charging cycles, the batteries guarantee long-term performance and thus significantly reduce the total costs over the service life (LCOS – Levelized Cost of Storage). This high cycle stability makes them a particularly economical solution.
- Flexible and versatile use:
The batteries can be ideally adapted to various applications – whether for grid stabilization, peak shaving or for the integration of renewable energies. Their compatibility with the AXOS energy management system ensures seamless and optimized operational control.
Through this combination of safety, longevity and flexibility, AXSOL offers its customers maximum investment security and a future-proof technology that operates economically efficiently and meets the highest regulatory requirements.
Partnership for innovative energy storage solutions
A project of this magnitude and technological complexity is best achieved through strong partnerships. AXSOL is realizing the battery storage system in Celle together with terralayr, a company that specializes in innovative marketing concepts for battery storage systems.
The collaboration with terralayr offers a number of key advantages:
- Digital networking via a cloud-based platform:
The intelligent networking of battery storage systems enables terralayr to optimally control and market stored energy. This leads to maximum economic and grid-serving flexibility, from which both operators and users benefit.
- Optimized economy and efficiency:
Terralayr’s approach makes it possible to flexibly offer surplus storage capacities on the energy market. This creates additional sources of revenue for operators and municipal utilities, which significantly improves the economy of the battery storage system.
This innovative form of cooperation shows how modern technologies and intelligent marketing concepts together contribute to using battery storage not only as a technical component, but also as an economically lucrative solution in the context of the energy transition.
The successful partnership between AXSOL and terralayr in the Celle project once again underscores the value of shared expertise and creates a trend-setting reference for future projects that want to meet the challenges of the energy transition with economically and technologically strong solutions.
AXSOL as EPC partner for sustainable energy projects
Complex projects such as the battery storage system in Celle require not only technological expertise, but above all experience in the area of project management. This is precisely where another strength of AXSOL lies: The company acts as an EPC partner (Engineering, Procurement and Construction) and thus offers all project steps – from planning to installation and commissioning – from a single source.
The advantages of this EPC strategy for customers and partners are compelling:
- Turnkey solutions (one-stop shop):
AXSOL covers the entire EPC process – from technical and commercial planning to dimensioning and integration, right through to the complete installation (including construction services) and handover of the finished system. Customers thus receive a reliable partner for the entire duration of the project.
- Modular and scalable systems:
With its modular ECS approach, AXSOL can flexibly and individually configure battery storage systems from 3 MWh. This enables precise adaptation to different project requirements and linear scalability, which in turn guarantees high economy and future security.
- Proven expertise in large-scale battery storage solutions:
Thanks to extensive experience in large-scale projects – particularly in the area of grid-connected industrial storage – AXSOL offers its partners maximum security in the implementation of technologically demanding projects.
- Comprehensive service and maintenance:
Beyond commissioning, AXSOL ensures long-term reliability through proactive maintenance, 24-hour support and customized warranty packages. Efficient spare parts management and fast response times also ensure minimal downtimes and maximum availability.
Through its role as an experienced EPC partner, AXSOL makes a significant contribution to the successful implementation of sustainable and technologically sophisticated energy projects. The project in Celle is an example of this approach and is a pioneering example of intelligent, reliable and economically viable battery storage solutions.
About AXSOL – Future-oriented energy storage solutions
AXSOL has stood for intelligent and modular battery storage systems for years, accompanying the entire process of sustainable energy use – from the initial consultation and planning to installation and efficient operation. Based in Würzburg, AXSOL specializes in developing innovative solutions that optimally support industrial companies, energy suppliers, plant operators and operators of critical infrastructures in reducing their energy costs and ensuring grid stability.
AXSOL’s core competencies include:
- Intelligent energy management:
The heart of all AXSOL solutions is the innovative AXOS energy management system, which guarantees both the highest technical standards in data security and optimal market integration thanks to AI-supported control.
- Comprehensive full-service approach:
Customers benefit from the fact that planning, installation, operation and maintenance are offered from a single source – a holistic service that ensures maximum reliability and minimal project risks.
- Sustainable and safe technologies:
In terms of technology, AXSOL consistently relies on future-proof lithium iron phosphate batteries (LFP), SF6-free switchgear and intelligent liquid cooling to ensure maximum safety, longevity and economy.
- Proven experience and innovative strength:
AXSOL brings many years of experience from demanding projects in the area of critical infrastructures and has already received several awards – including the German Innovation Award and inclusion in the top 10 lists of European defense and energy tech providers.
With the project in Celle, AXSOL is once again setting standards and positioning itself as a leading provider of battery storage technology in Germany. The company’s vision of actively shaping the energy transition with innovative and intelligent storage systems is impressively put into practice here.
Conclusion – Battery storage as a key technology for the energy transition
AXSOL’s battery storage project in Celle impressively demonstrates how innovative energy storage solutions contribute to securing grid stability while at the same time opening up economically attractive opportunities. Through intelligent control, state-of-the-art technologies such as LFP batteries and proven expertise in project management, AXSOL offers sustainable and future-proof solutions that are essential for the energy transition.
Especially in view of growing challenges such as increasing electricity demand and volatile renewable energy sources, such battery storage systems are becoming indispensable components of modern energy infrastructures. Projects such as the one in Celle are therefore not only technologically groundbreaking, but also economically and socially relevant – they form the basis of a secure and sustainable energy future.
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