They're just ticking over. Demand a serious load and they'll use MORE
FUEL.
You have a basic problem with thermodynamics I see and conservation of
energy. I guess SCIENCE wasn't your strong suit ?
I think SCIENCE is NOT your strong suit. Did I ever say it will use no
extra fuel? Do you even know anything about modern electricity network?
When do you think it would be most polluting? When we have to run up
older generators to meet peak demand from people charging their cars
during
the day or when people charge them at low demand (when the newer
generators can be run). And what about the loses in the tranmission and
distribution networks?
Unfortunately you are so one dimenational you don't think about these
other issues. I hope our scientists and engineers are not like you.
Otherwise we will just be happy to dig it out and ship it overseas,
sigh.