Lights at Tri-City civic facilities will dim for an hour on Saturday as part of worldwide movement to protect the planet.
And city halls are also asking residents and businesses to do the same for Earth Hour.
On March 19, from 8:30 to 9:30 p.m., communities want you to unplug unnecessary lights and electronics in a bid to address climate change.
Participants are encouraged to register online (changeclimatechange.org) and spread the word with friends and family.
Last year's campaign reduced the provincial electricity load by a mere 0.2% versus 1% in 2014 and 2% in 2008.
Port Moody was the Tri-City leader, cutting energy by 1% — a move that directly resulted in cost savings.
Coquitlam was close behind, cutting its load by 0.9% while Port Coquitlam came in at 0.7%. Both the villages of Anmore and Belcarra reduced their load by just half a percent.
The top B.C. municipality in 2015 was Whistler at 7.2%.
Started in Sydney, Australia, in 2007, Earth Hour is now hosted by the World Wildlife Foundation.