Dubai saved 178 megawatts of electricity during Earth Hour, according to the Dubai Electricity and Water Authority (DEWA), equivalent to 74 tonnes of carbon emissions.
Millions around the world switched out unnecessary lights and electrical appliances from 20:30-21:30 to express solidarity with efforts to address climate change.
Landmarks and public buildings around Dubai also switched out their lights to mark the occasion.
"Earth Hour aims to make conservation of electricity and water a daily practice to cut carbon emissions and combat environmental challenges such as climate change, global warming, and the unprecedented reduction in biodiversity," said Saeed Mohammed Al Tayer, Managing Director and CEO of DEWA.


UAE backs IMO move urging Iran to halt actions endangering Arabian Gulf waters
UAE calls for immediate, unconditional reopening of Strait of Hormuz
H.H. Sheikh Mohammed hails first batch to secure government scholarships
WATCH: Driver caught in Dubai for running red light without number plate
Abu Dhabi tests autonomous patrol boats to boost maritime safety
UAE charges 13 people, 6 firms in Port Sudan arms trafficking case
UAE bans citizens from travel to Iran, Lebanon and Iraq
H.H. Sheikh Mohammed honours winners of Erth Dubai Awards
