As part of the club's Greener Game, supporters are being encouraged to aim at the Pledgeball League 2023/24 title.
Charlton’s fixture against Cambridge United on Saturday will be a Pledgeball Derby as the club take on the U's on and off the pitch.
Getting involved is simple. Fans can make a pledge (up until midnight on matchday) to take actions that reduce the impact that we have on the planet.
The group of supporters who have pledged to save the most carbon emissions by midnight on matchday will see their club win the Pledgeball fixture and climb the league table.
There are some amazing prizes up for grabs this year - including Directors' Box and Lounge tickets, £15,000 worth of sustainability consulting, which will be awarded to the winning club this season, and free away travel by train for one lucky fan who pledges.
The more fixtures you pledge in support of the Addicks, the more times you’re entered into the prize draw.
Charlton fans have the potential to make a significant change; if all of the club's Twitter followers limit their showers to four minutes, it would save the same number of emissions as taking over 1,450 cars off the road
Katie Cross of Pledgeball said: "Fans have the potential to drive change at all levels, whether they are at the stadium cheering their favourite team or trying to champion and fight for a cause. When it comes to Charlton, they have done a significant amount in the community and I'm sure the fans will leave no stone unturned to pledge and save together."