I would imagine that people will use more electricity for air conditioning and probably drive more, but will this be offset by lower heating expenditures?
Mansur, Mendelsohn, and Morrison say no. In fact they predict that energy usage will go up.
SSRN-A Discrete-Continuous Choice Model of Climate Change Impacts on Energy by Erin Mansur, Robert Mendelsohn, Wendy Morrison: “The model implies that warming will increase American energy expenditures, resulting in welfare damages that increase as temperatures rise.”
And now back to your regularly scheduled programming.