Spanish utility Naturgy Energy Group SA (<a href="https://www.bolsasymercados.es/bme-exchange/es/Mercados-y-Cotizaciones/Acciones/Mercado-Continuo/Ficha/Naturgy-Energy-Group-ES0116870314" target="_blank">BME:NTGY</a>) has started work to upgrade its 49.6-MW Somozas wind farm in the region of Galicia, northwestern Spain, to take down 81 turbines and replace them with nine Vestas machines for higher output and lesser visual impact on the landscape.