This is probably getting off topic, but I think that many times the concept of "green" energy is more about reduced footprint vs. zero or negative footprint.

The impact of the plane ride may take a very long time of renewable living to offset. Some things in life are unavoidable, but the net impact of plane+renewable is still going to be less than plane+standard/disposable lifestyle.

They won't probably fly you alone and not in an executive jet.