/ For municipalities

Working together for an independent, sustainable energy supply

Germany wants to master the energy transition and become more independent in terms of energy supply. This poses complex challenges for the electricity infrastructure: Instability in the power grid, high volatility and high prices.
Stabilizing the grid is therefore essential. Flexible energy storage systems are needed for this purpose. According to the Fraunhofer Institute, the demand for storage will increase more than 200-fold by 2030.

/ Applications

Battery storage as a central component of the energy transition

Battery energy storage systems offer a significant opportunity for an independent and sustainable energy supply. The connection to the power grid with its own grid connection enables diverse operating strategies.

Generation flexibility

The battery energy storage system can store electricity at times when it is not needed and feed it back into the grid when the demand is high. Doing so, it reduces bottlenecks in the grid and sharp fluctuations in the price of electricity.

Buffering of price peaks

Due to the expansion of renewable energies volatility on the electricity market is increasing. Battery storage systems use trading to keep shortfalls or surpluses as low as possible and thus counteract extreme price fluctuations.

Frequency containmanet reserve

Battery energy storage systems are technically very well suited to compensate for unforeseen grid fluctuations. Within a few milliseconds, the storage systems can stabilize the grid on command and prevent power outages.

/ Advantages

How your region benefits from storage projects

Leading the way in the energy transition
Contribution to energy independence
Strengthening and securing the local electricity infrastructure
Plannable trade tax revenues

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/ the path to the battery storage project

The path to the battery storage project

The extensive expansion of renewable energies increases the need for infrastructure and services to ensure the stability of the electricity grid and security of supply. This is because a larger proportion of renewable energies in the electricity mix leads to increased volatility and unpredictability in energy generation. Fluctuations in electricity prices increase and a high simultaneity factor arises, which increasingly leads to overloads in the grid. Flexible energy storage systems are essential for stabilizing the grid and the sensible integration of renewables.
But how is a battery storage project implemented?
/ Site selection
When selecting a site for a battery storage project, we always analyze potential locations taking into account grid topology, environmental compatibility and building law aspects. Our large-scale battery storage systems are connected directly to the electricity grid in order to be able to offer cross-system services. Accordingly, they are usually installed in the immediate vicinity of the existing transformer station.
/ Grid connection & approval planning
Our project department accompanies the entire process of grid connection and approval planning, always in close cooperation with the municipalities and responsible authorities. In addition to the rough technical planning, all relevant concepts are also created.
/ Detailed planning & implementation planning
Rough planning is followed by detailed planning. Together with our technical departments, our project management department designs battery storage systems that are optimized for the application and location. Once planning permission has been granted, the individual components of the battery storage system are ordered by our purchasing department.
/ Civil engineering work
Under the supervision of our project management team, the site is prepared for the construction of the storage containers. The civil engineering work opens the construction site - the ground is prepared, cable trenches are dug and foundations are poured. During the construction phase, we always make sure to use service providers and subcontractors from the region.
/ Delivery of battery energy system (BESS)
The battery energy systems (BESS) are supplied and installed. A BESS system consists of the battery containers and battery modules themselves, cooling systems, transformers, inverters and the operations building. The compact battery containers are anchored to the foundations. One such container is just under three meters high.
/ Use of the battery modules
Depending on the storage system manufacturer, the battery containers arrive at the construction site already filled or are filled and wired with the individual battery modules on site.
/ Electrical & mechanical installations
The electrical work on the storage system begins. The cables and individual components are connected and the energy management system, the system control and all IT components are installed.
/ Grid connection & test phase
The battery storage system is connected to the power grid for the first time via the nearby transformer station. This is followed by the so-called "energization" of the system and a large number of functional tests to ensure uncomplicated commissioning.
/ Commissioning
After a few months of construction and successful commissioning, the battery storage system undergoes trial operation and can then take on important system-serving tasks in the electricity grid.

Questions & Answers

What is the reason for the high expansion demand of the power grids?

The increasing share of renewable energies in the energy mix has greatly changed the demands placed on the power grid. Due to the areal shifts in power generation, additional transmission and distribution capacities are necessary. This requires the expansion of extra-high and high-voltage lines. The main problems with the urgently needed new grid infrastructure are the massive costs, the very long construction times and the lack of acceptance among the public. As a result, in many reagions the grid expansion is lagging behind demand and cannot keep pace with the expansion of renewable energies.

Why do large-scale battery energy storage systems help to reduce the need for expansion of the energy grids?

From today's perspective, battery energy storage systems are the most economical option for bringing urgently needed flexibility and stability to the power grids in the short term. The decentralized storage of electricity in battery storage systems reduces the acute need for expansion. Fewer lines and substations need to be built. At the same time, it enables greater integration of renewable energies and independence from external energy sources.
More information

Why does Kyon rely on large-scale lithium-ion battery energy storage systems?

We pursue the goal of making the greatest possible contribution to the energy transition with our projects. Therefore we continuously compare all technical solutions for electricity storage. With less than 10 % losses between power purchase and feed-in, large stationary lithium-ion battery storage systems have a considerable advantage over other storage systems such as hydrogen electrolysis with over 60 % or classic pumped storage power plants with 20-30 % losses. Lithium-ion battery storage systems can also react very dynamically to fluctuations in the power grid and provide energy in fractions of a second if necessary - this is crucial for grid stability when unexpected events and disturbances occur in the power grid. The high energy density of the storage systems results in low land consumption and minimal impact on nature and the environment. As this is a mature technology, development, approval and construction times can be planned very well. All systems used by Kyon Energy can also be recycled at the end of their life cycle, so that the valuable battery raw materials are not lost.

What capacities/performance do the battery storage units have?

Depending on the size of the battery storage system, its capacity and performance varies. Currently realized projects each have a capacity of around 20 MW and a maximum usable capacity of 24 MWh. Much larger 100 MW storage projects are already in the planning stage. For comparison, an average household in Germany consumes around 8.5 kWh of electricity per day, with consumption peaking at 0.62 kW during the morning and evening hours. A battery storage system with 20 MW output and 40 MWh capacity can thus supply more than 30,000 households for two hours at peak time. With a 100 MW battery storage system, this figure is already over 150,000 households.

Can the municipality buy electricity directly from the battery energy storage system or use it autonomously?

A direct purchase from the battery energy storage system is not foreseen in our projects, as they are directly connected to the distribution grid and thus serve the general power supply. They ensure the stability and independence of the power grid and therefore contribute to keeping electricity prices stable or even lowering them in the long term.

Can battery energy storage systems provide a black start during power outages?

The battery storage systems planned by Kyon meet the technical requirements to ensure a black start. In Germany, however, this is not yet possible from a regulatory point of view. A current court case is concerned with the market-based procurement of the black start system service. As long as the market for this has not yet been opened, batteries are prevented from offering their black start capability to network operators for formal reasons in practical implementation.