Polaris Renewable Energy Inc (<a href="https://money.tmx.com/en/quote/PIF" target="_blank">TSX:PIF</a>) has announced a USD-20-million (EUR 18.4m) agreement to acquire a controlling stake in a 26-MW operational wind farm in Puerto Rico owned by a unit of Banco Santander SA (<a href="https://www.bolsasymercados.es/bme-exchange/en/Prices-and-Markets/Shares/Main-Market/Details/Banco-Santander-ES0113900J37" target="_blank">BME:SAN</a>).