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 raised GBP 500 million (USD 648.4m/EUR 599.2m) from a green bond sale in the UK, representing its largest issue in sterling over the past 15 years.