Silly me I forgot that electricity just appears out of thin air with zero emissions!
Lady, why dont you use the power of the internet to do some research before you yammer on?
https://oaspub.epa.gov/powpro/ept_pack.charts
In the DC area, electricity generation comes from 40% nuclear, 30% natural gas and 23% coal. ALL DOMESTICALLY produced resources. This is not about what is the least polluting.
And if you did factor in pollution your individual carbon footprint is much higher when you drive a car vs. taking mass transit.