ČEZ commenced operation of a 4MW battery within a joint pilot project with ČEPS

A large-capacity battery system for storing energy and testing various modes of the provided support services for the energy system of the Czech Republic commenced its operation on the premises of the Tušimice Power Station today. The device, activated within a joint BAART research project of ČEZ and ČEPS, was ceremonially opened by the Deputy Prime Minister and Minister of Industry and Trade Karel Havlíček, Chairman of the Board of Directors and General Director of ČEZ Daniel Beneš and Chairman of the Board of Directors of ČEPS Martin Durčák. It is yet another project that utilizes vast power station properties for solutions in the area of the “new power” energy.

The device, with a power output of 4 MW, capacity of 2.8 MWh and minimal lifespan of ten years will be connected in the unit with the existing turbo generator with a power output of 200 MW, which is certified for providing power balance services (services used for ensuring a balance between production and consumption), and particularly automatic frequency regulation. Contrary to some other battery storage projects, which have been implemented relatively recently in the Czech Republic, the subject of the Tušimice project is not testing a battery technology itself. The Tušimice project is supposed to verify various types of operation modes for different conditions and battery configuration rules within the national electrical grid with the objective of ensuring the long-term reliability of its management and stability of the provided power balance services.

"Fundamental changes in the operation of the entire energy market have resulted in significant shifts in electricity production, transmission, distribution and consumption. Furthermore, the development in the area of renewable resources and decentral energy systems also translates into increased demands on the creation of a regulation backup for providing a primary frequency regulation. Similar projects related to the energy grid services that we are opening in Tušimice today are already in operation and being built throughout Europe. I am happy that the Czech Republic is not lagging behind in this area," said Karel Havlíček, Minister of Industry and Trade of the Czech Republic.

It is in relation to the aforementioned trends that ČEZ and the operator of the transmission grid ČEPS are implementing the BAART (Battery Accumulation for Tušimice Automatic Frequency Regulation) project, the objective of which is to test several types of operation modes of energy accumulation battery systems, including a pilot operation for frequency regulation. Automatic frequency regulation forms one of the key support services for managing the stability of the transmission grid, which is based on precisely-defined power output changes of the power station unit in relation to frequency deviances from the given set value. The project envisions one year of basic tests, followed by other special tests.

"We are glad that our cooperation on this project with ČEPS has reached the point of a successful start of the 4 MW battery storage facility today. Our objective is to conduct joint, practical testing of support services for the energy grid and, at the same time, testing cooperation and synergies when connecting the battery storage facility that is linked to a conventional power station unit. The project is also in complete harmony with the program of future utilization of the existing power station locations. As part of this program, individual power station premises are being continuously adapted with the objective of being able to operate under the condition of the "new power" energy," said Daniel Beneš, Chairman of the Board of Directors and General Director of ČEZ.

"The development of new technologies is also accompanied by the need to set conditions for their incorporation into the electric grid. The implementation of the BAART research project will allow us to expand and to practically verify the existing knowledge of ČEPS related to the possibilities of using battery systems to provide support services," stated Martin Durčák, Chairman of the Board of Directors of ČEPS.

ČEZ is the exclusive investor of the project, ČEPS will pay the price for the frequency regulation service during the pilot mode in compliance with the regulation methodology specified by the Energy Regulatory Authority. The project falls under the program of the future utilization of the existing power station locations, Apart from other facilities, a centralized data storage facility of the ČEZ Group with an operating storage capacity of 2 PB or greenhouses for growing vegetables, which are heated by the heat from the operation, have already been already put into operation in Tušimice.

The battery system is installed on the power station premises at an area, where the backup gas boiler plant for heating the city of Kadaň used to be during the complete power station overhaul.
The ČEZ Group is involved in the energy accumulation field in a very complex way. This can be demonstrated by, for example, its activities in the segment of public, fast-charging stations for electric cars or by the joint initiative with the Slovak company of Inobat in the search for energy storage potentials in Central and Eastern Europe.

ČEPS has been active in the field of innovations, research and development for a long time. It has implemented many innovation projects that focus on new solutions for the reliable operation of the Czech electrical grid. Apart from the BAART project, it has been involved in, for example, projects that focus on issues related to power flexibility, adequacy and aggregation in the National Action Plan for Smart Grids (NAP SG).

Link: "TIP - Virtual inspection: View the premises of the modern Tušimice power station after its comprehensive renovation"

Did you know that...

... the cost of the battery systems in 2025 could amount to approximately 160 USD/kWh (i.e. 40% of the cost in 2016)?
... a Li-Ion battery with a power output of 100 MW and capacity of 129 MWh can store enough energy to cover the needs of approximately 30 thousand households for one hour?
... the estimated global power output of the battery storage facilities will increase more than one hundred times by 2040? In 2018, the installed battery storage facilities represented 9 GW/17 GWh, while in 2040 this number will increase to 1,095 GW/2 850 GWh. (source: BloombergNEF)
... it is expected that the investments in battery storage facilities in the USA will increase ten times - from 300 million USD in 2019 to 3 billion USD in 2023? (source: Platts)
... the lithium-ion batteries will already become the cheapest option for electric energy accumulation for most applications by 2030? (source: Royal University London)

Martin Schreier, CEZ spokesman

December 2019