Spanish utility 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 agreed to buy out the stake it does not already own in US energy services and delivery company Avangrid Inc (<a href="https://www.nyse.com/quote/XNYS:AGR" target="_blank">NYSE:AGR</a>) in an all-cash deal worth USD 2.55 billion (EUR 2.34bn).