The City of Hamilton and Horizon Utilities are hoping you'll participate in an event that's set to sweep the globe once again.
Saturday night between 8:30 and 9:30 is Earth Hour -- a campaign that began in Australia back in 2008 which promotes turning off the lights to deliver a message about the need for action on global warming.
City of Hamilton offices will be shutting off all unneccesary lights and even unneccesary pumping at the water and waste water facility.
The Manager of the City's Office of Energy Initiatives Tom Chessman says he hopes residents will take a similar approach and turn off unneccesary lights and anything else that uses electricity.
Last year, Hamiltonians helped reduce energy consumption by 4.5% during Earth Hour.
As of the end of 2012, the City's corporate energy policy has helped reduce energy intensity in town by 17% -- which Chessman says amounts to 27 million dollars in savings.