Sewage Sludge for seasonal energy storage

The K4S project is investigating the seasonal storage of electricity from photovoltaic systems in the form of dried sewage sludge. This project presents an advanced process that involves the drying of sewage sludge in summer using PV electricity and heat pumps and its highly efficient incineration in winter. The innovative approach not only enables effective energy storage, but also the recovery of the valuable raw material phosphorus, which helps to promote the circular economy. The technology screenings and simulations carried out will assess the technical feasibility and costs of the system. The project addresses key sustainability goals by increasing energy independence and reducing greenhouse gas emissions. By integrating renewable energies and innovative storage technology, K4S makes a significant contribution to climate neutrality and offers a forward-looking solution for the long-term storage of renewable energies. Translated with DeepL.com (free version)