The S.A. (ΔΕΗ) is the biggest in . It owns and operates 34 major and and 3 parks of the interconnected of the mainland, as well as 60 autonomous located on , and other Greek islands (33 , 2 , 18 and 5 parks). The total installed capacity of PPC's 97 is 12276 MW with a net generation of 52.9.
[pdf] Enel and Rome Fiumicino Airport have commissioned Italy's largest energy storage system with second-life batteries from electric cars. The stationary 10 MWh storage system uses a total of 762 battery modules from Mercedes-Benz, Nissan and Stellantis vehicles.
[pdf] 300MW of storage capacity - enough to power 200,000 homes during blackouts. The system uses lithium-ion batteries (yes, like your smartphone) but scaled up to industrial proportions.
[pdf] honeybees have been perfecting energy storage for 130 million years. Their secret? The honeycomb – nature's original power bank. Now, Malabo's groundbreaking honeycomb-inspired energy storage systems are creating similar buzz in renewable energy circles.
[pdf] According to PV Europe, the large-scale battery energy storage market in six key Central and Eastern European countries is projected to grow fivefold by 2030. · Poland will lead with capacity increasing from 350 MWh to 4000 MWh. · Romania is expected to reach 3750 MWh.
[pdf] Panama has initiated a groundbreaking 500 MW tender auction encompassing renewables and energy storage, marking the first such auction in Central America to include storage.
[pdf] 
