Romania's state-owned Hidroelectrica has prepared a proposal to build the Islaz project for next month's shareholder meeting. The proposed dam would primarily be used for irrigation, fishing, flood control and road crossings. Conventional hydro plants will operate below the profitability threshold, so it is promoting them as pumped storage projects. Pumped hydro storage acts as a battery and remains the only traditional technology used for this purpose. They play a vital role in integrating renewable electricity production capacity, especially wind and solar.