This is completely wrong. They scaled energy with number of transactions.
> At each time step, CO2e emissions for the given number of transactions were estimated based on the emissions generated to mine that number of transactions in 2017.
Bitcoin network does not work that way. Energy is spent securing the blockchain, not per transaction.
> At each time step, CO2e emissions for the given number of transactions were estimated based on the emissions generated to mine that number of transactions in 2017.
Bitcoin network does not work that way. Energy is spent securing the blockchain, not per transaction.