The technology still evolving. 10 transactions is not and will not be the limit. The Lightning Network already proved that a much higher volume of bitcoin transactions can be made without slowing down the bitcoin network.

I like to think the energy consumption of the bitcoin network is an "idle energy":

10 transations/s = mid-size country

100 transations/s = mid-size country

10.000 transations/s = mid-size country

An increase in transations do not directly increase energy consumption.