The roughly AED232 billion (US$5. 2GW of solar PV with a 19GWh battery energy storage system (BESS), which Masdar claimed was the “largest and most technologically advanced system of its kind in the world. . The Emirati state-owned renewables developer Masdar has begun construction on a giant solar-plus-storage project in Abu Dhabi. Emirati Renewable energy company Masdar (Abu Dhabi Future Energy Company) and Emirates Water and Electricity Company (EWEC) are developing the trailblazing solar and. . Abu Dhabi is already a regional leader of renewable electricity, with its 2. 6GW of currently installed solar capacity accounting for nearly half of the UAE's 5. Located in Abu Dhabi and slated for completion in 2027, the project will integrate a 5.