Spanish renewables giant Iberdrola will supply Spanish telecommunications operator Vodafone España with 540GWh of clean energy a year from January, after the companies signed a long-term power-purchase agreement.

A total of 140GWh will be supplied from Iberdrola’s 49MW under-construction Puylobo wind farm in the province of Aragón, northeast Spain, with the remaining 300GWh coming through Iberdrola’s Guarantee of Origin certificates.