EJ's housemates participated too.
This year, EJ was on the road that day and so did not take any photos.
The following pictures were taken last year.
When the lights were switched off, candles were lit.
Curious and busybodies as cats are, they checked out the candles that resulted in hot noses and singed whiskers.
Cinders checking out the candle and licking her hot nose to cool off.
Reports said Earth Hour has resulted in a drop of energy consumption.