To quote from BofA's site:

"We also are making our operations more sustainable – including achieving carbon neutrality and procuring 100% renewable electricity in 2019, a year ahead of schedule."

Drastically lower than Bitcoin if this is anything to go by. So low you might as well put BofA into a fossil fuel burn limbo contest.

Given that result took less than three seconds of searching, I'm wondering if you have an ulterior motive in targeting BofA specifically.