In December 2019, the European Commission has presented the “European Green Deal”, a set of policy initiatives aiming at ensuring the EU becomes climate neutral by 2050.  These policy initiatives have strong implications for the energy sector, and for the energy storage sector in particular. New energy storage technologies will supply more flexibility and balance in the grid, providing a back-up to intermittent renewable energy and contribute to seasonal energy storage challenges. The challenges can be addressed by innovative hybrid energy storage materials, devices and systems that combine existing and new solutions. The EERA JP ES webinar will bring together research and industry communities involved in energy storage, material science (Artificial Intelligence, Materials Accelerator Platforms) and particle accelerator to discuss potential collaboration and the best way forward to create an active and persistent eco-system enabling innovation in Materials for Hybrid Energy Storage.