Iberdrola SA (<a href="https://www.bolsasymercados.es/bme-exchange/es/Mercados-y-Cotizaciones/Acciones/Mercado-Continuo/Ficha/Iberdrola-ES0144580Y14" target="_blank">BME:IBE</a>) has begun commissioning the first unit of its 225-MW Valdecanas pumped-storage hydroelectric plant in Caceres, western Spain, after hybridising the facility with a 15-MW/7.5-MWh battery and making other technological improvements.