Bitcoin Cashs energy consumption if the network grows

Hi everyone,

I did research the topic but could not get a satisfying answer to it.

Bitcoin Cash is a fork of Bitcoin. Therefore it uses proof of work to add another block onto the chain if i understand it correctly.

• If the network grows and will become as big as BTCs network, would that result in the same energy consumption of the whole network?
• How can we be in favour of this system, if all of us are fighting co2 emissions on the other hand?
• Is there any discussion about moving to proof of stake? this would minimize the energy consumption significantly as i understand it.

I do not mean to be rude about BCH in any way, but seriously want to know things that are important to me.

best wishes