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>) said on Wednesday that it has issued a ten-year green bond through its US regulated electricity network business New York State Electric & Gas Company (NYSEG), raising USD 525 million (EUR 480.6m).