While the world's top leaders this week discuss the green energy transition and climate change in New York City, companies seize the opportunity to show off their new purchases in renewable energy.

On Friday Google, ahead of the climate summit, made public its largest power purchase agreement ever, pertaining 1.6 GW of solar and wind on a global scale. Now US telecommunications firm AT&T follows suit, announcing PPAs on 960 MW of renewables.

Thus, AT&T has bought more than 1.5 GW of renewable energy, the company writes.

Its most recent purchase was 160 MW of wind from Duke Energy's Frontier Windpower II in Oklahoma, which will hold a capacity of 350 MW once it's ready in December 2020. Moreover, AT&T has entered a virtual PPA on 800 MW with Invenergy, which covers both solar and wind and, being virtual, is not bound to any concrete project.

Like Google's, this is the largest power purchase in the company's history.

"AT&T’s new renewable energy purchases are a milestone in our company-wide efforts to help address climate change, and they will deliver important benefits to our bottom line," says Charlene Lake, chief sustainability officer and senior VP of CSR at AT&T, in a press release.

English Edit: Jonas Sahl Jørgensen

Total director says company to halve costs for Tyra field 

Google takes first step into offshore wind