The International Energy Agency has joined industry calls to overhaul the way companies purchase renewable energy to meet their climate targets, and promotes hourly certification of renewable electricity, it said.
Companies and organizations face pressure amid greenwashing accusations as they make net-zero commitments and pledge to use more renewable energy.
In a recent report supported by Google, the IEA said that the way in which companies meet targets can significantly affect actual emissions reductions.
The current annual accounting favored by most corporates would "not deliver all the technologies that will be needed as power systems decarbonize and reach higher renewables integration phases," the IEA said.