Fight the Wind — Andrew Karre

Fix and Cleo are an uncomfortable pair, forced together when gangs drive them out of the ruins of Minneapolis. Fix has a gift for machines. If he can restore an old turbine on the wind farm, their small group would be able to live at the Iowa camp for as long as they want. Cleo says no way. She wants to keep moving to find a city that's rumored to be growing in the southwest.