Right now humanity is facing some bad times due to CO2 in our atmosphere trapping excess heat from the sun.
Presumably, a civilisation that was Type I on the Kardashev scale would be capturing all the available solar energy coming in to their atmosphere on purpose and using it to perform some function. But some of that energy would inevitably be transformed into heat due to no technology being 100% efficient.
So, wouldn’t a civilisation face catastrophic climate change really before they even got to be a fully Type I civilisation?
Presumably, you would have figured out how to stabilize atmospheric gas concentrations to optimize radiant thermal control before you reach Type 1 or you would cook yourself, yes.