PARIS - Individual consumers and companies need to "immediately" limit their energy consumption in order to be better equipped this winter to deal with a looming energy crisis, the heads of French energy giants Engie , EDF and TotalEnergies said in the French weekly paper Journal du Dimanche on Sunday.

"We need to collectively work to reduce our consumption in order to regain a margin of maneuver," the companies said in an open letter, citing sharp declines in Russian gas shipments as well as limited European electricity production due to maintenance issues.

"Taking action as soon as this summer will allow us to be better prepared at the start of next winter, notably for preserving our gas reserves," they said.

(Reporting by Benjamin Mallet and Mimosa Spencer; Editing by Sandra Maler)