Renewable Energy Sources Operator & Guarantees of Origin (DAPEEP SA) is responsible for Renewable Energy markets of Greece’s National Interconnected System (Transmission System and Distribution Network of Mainland and Interconnected Islands). The company also manages the Guarantees of Origin of Electricity from RES and Combined Heat and Power Units (CHP). DAPEEP SA is also the auctioneer of the CO2 Emissions Allowances in Greece, while at the same time operates as the Aggregator of Last Resort (FOSETEK) of RES producers and in cooperation with them constantly aims to strengthen and accelerate the effort for: • Ensuring the sustainability of existing RES & CHP investments. • Increasing the penetration of new RES & CHP in energy markets with their sustainability assured. • The representation of RES & CHP in the markets of electricity, along with promoting environmental products, such as GOs. • Addressing climate change and its consequences. DAPEEP was created in order to meet the modern challenges in the field of Renewable Energy Sources, while at the same time it is the largest shareholder in the Hellenic Energy Exchange (EXE) and the second largest seller after Public Power Company in the markets operated by EXE