Together with the innovative Energy nest hybrid power source, we help keep the grid in balance

Prague,  12. July 2024

Together with the innovative Energy nest hybrid power source, we help keep the grid in balance

Prague,  12. July 2024

As of this week, we are trading the ancillary services of Energy nest - a unique hybrid power source with the largest battery storage in the country, whose launch you probably didn't miss a few days ago. Thanks to our experience in the market, the Decci energy group has entrusted us with 30 MW of capacity, combining gas turbines with batteries to provide aFRR+ and FCR services.

On 10 July, in Vraňany in the Mělník region, the Energy nest hybrid energy source was was put into operation - an innovative source using a combination of a large-capacity battery storage with a capacity of 20 MW and 22 MWh and six aeroderivative turbines with a total capacity of 32.4 MW. Nano Energies provided technical advice on the operations of the ancillary services of the plant. Since the beginning of July, Energy nest has actually been providing the ancillary services and Nano Energies has been trading them.

The aim of Energy nest is to compensate for surpluses or shortages in the transmission system for ČEPS, the Czech transmission system operator, which is responsible for the stability of the network. The transmission system needs to respond to the increasing share and variability of renewable energy and requires the integration of other reliable and low-carbon sources that can flexibly and safely compensate for fluctuations within minutes.

Thanks to an innovative combination of technologies, Energy Nest can respond quickly to the needs of the grid and has a high degree of energy flexibility. It can operate at full power in as little as two minutes, making Energy Nest an ideal resource for providing support services.

Nano Energies is currently trading 30 MW of capacity provided by gas turbines combined with the largest battery storage in the Czech Republic. In the future, we plan to work together to expand the capacity and type of services offered.

What is aFRR and FCR?

aFRR+/- (Automatic Frequency Restoration Reserve) and FCR (Frequency Containment Reserve) are reserves used to maintain a balance between electricity generation and consumption. aFRR responds to grid deviations by increasing or decreasing generation with a mandatory response time in the Czech Republic of 7.5 minutes, while FCR immediately compensates for short-term frequency deviations with a response time of up to 30 seconds. Together, they ensure the stability and reliability of power systems, supporting a secure and efficient supply of electricity.

How does the grid deal with deviations?

About the Energy nest project

picture of Energy nest – the hybrid source of energy
  • Date of Operation Start: July 10, 2024
  • Operator: E.nest Energy a. s. (part of the Decci a.s. energy group)
  • Location: Vraňany, Mělník Region
  • The Largest Battery Storage in the Czech Republic: Installed power of 20 MW and a capacity of 22 MWh, making it the largest facility of its kind in the Czech Republic.
  • Unique Hybrid Energy Source: Combines battery storage with six aeroderivative turbines, each with a power output of 5.4 MW, achieving a total power of 32.4 MW. The total installed power of the source, including the battery storage, is 52.4 MW.
  • Providing Power Balance Services: Energy nest ensures balancing of surpluses or shortages in the transmission network and provides aFRR+ and FCR services for ČEPS, a.s.
  • Fast Reaction Time: The turbines can reach full power within 2 minutes, allowing for a quick and efficient response to the needs of the electricity grid.
  • Integration with Renewable Energy Sources: The facility is prepared for integration with renewable energy sources, including the Vepřek photovoltaic power plant with a capacity of 35 MW and future green hydrogen production.
  • Innovative Control and Technology: A specially developed control system and modern technology ensure a high degree of flexibility and efficiency.

How do Nano Energies services work?

Every second of every day, we work with our customers in the Czech Republic, Croatia and Romania to ensure that the balance between consumption and generation on the transmission system is maintained to avoid outages. We are able to remotely control our customers' power sources and provide so-called ancillary services - we react immediately to network deviations and switch sources on and off according to the needs of the transmission system. Put simply, our customers receive additional revenue for their willingness to help the transmission system with imbalances.

How do we work with our customers' energy flexibility?