Earth Hour campaign is organized by Earth Hour and WWF (World Wildlife Fund) and is one of the biggest events held to protect the environment. For the first time, Azerbaijan joined this global campaign in 2011. "IRELI" Public Union is in charge of organizing the event in the country. The biggest event within EHA (Earth Hour Azerbaijan) campaign was held in Baku. The campaign started in the office of "IRELI" Public Union with participation of 250 youths.