Battery storage

Piloting the use of "free capacity" of large battery systems for ancillary services (EFLEX project)




Technologická agentura ČR (TAČR)


In cooperation with ČEPS, E.ON energie, ČEZ, PREdistribuce, Solar Global service, Škoda Auto

LEEF role

The LEEF is responsible for the overall coordination of the project, participates in testing, and supervises the preparation of the content and format of deliverables in each phase of the project.

The aim of the project is to examine the usability of battery systems “free capacity” for the provision of ancillary services. The subject of research is battery systems that are primarily installed for a purpose other than providing ancillary services (eg for peak-shaving in fast charging of electric vehicles, or load-shifting PV). This project is co-financed with the state support of the Technology Agency of the Czech Republic within the Theta Program.

⚪︎ Business analysis of ČEPS (TSO) requirements and an assessment of how battery systems can meet these
⚪︎ Technical analysis of SW requirements
⚪︎ SW development and testing
⚪︎ Tests of possibilities of using free capacity and their evaluation
⚪︎ Specification of rules for the use of free battery capacity for ancillary services

Filip Vančura

Project Manager, LEEF Technologies

Filip Vančura, Project manager, LEEF Technologies



We are a company that specializes in the development of clean energy and transport projects. We also carry out market analyses, develop project concepts and business plans, as well as new technology deployment strategies. We have been active in the market since 2010. Since the beginning, we have focused on electromobility, battery storage and development of technologically complex projects. Recently, we have also been working on green hydrogen projects.


Development of charging infrastructure, fleet electrification, advanced charging solutions. Forum elektromobilita. Portál elektromobilita.

Battery energy storage

Battery systems and their applications: ancillary services, autonomous generation, power supply optimisation, etc. Second life batteries.


Production, storage and distribution of emission-free and low-emission hydrogen. Integration with RES and battery storage. PPA contracts.

complex projects

Integration of multiple technologies. Optimization of local production/consumption. Flexibility for ancillary services. Local distribution networks. Energy communities.

Our team

Many years of experience from energy markets. We like our work and we like working together.