Pulheim is a city in the Rhein-Erft-Kreis, North Rhine-Westphalia, Germany.Since the 1920s, a large substation of the RWE has been sited at Pulheim. At this substation there is the termination of the north south powerline and a large control center for the powergrid of the RWE.In the communal reform of 1975 several previously independent municipalities were added to the municipality Pulheim, which received city rights in 1981.