Go a little farther south and find Ft McMurray in Alberta, which isn't even traditional oil fields but oilsands excavation. Only about 70k people but it's basic

Go a little farther south and find Ft McMurray in Alberta, which isn't even traditional oil fields but oilsands excavation. Only about 70k people but it's basically as bright as the 1m people cities to the south of it (and the extra wide halo around Edmonton is likely related to refineries). Heavy industry is bright I guess.