The former Knepper power station on the outskirts of Dortmund was brought down in two explosions on Sunday. The first destroyed the main body of the plant and the second collapsed its 128-meter (420-foot) high cooling tower and its 210-meter (689-foot) tall chimney.
German news agency dpa reported that about 120 nearby residents had to leave their homes as a precaution.
The power plant was shut down in 2014.
Germany plans to switch off its nuclear plants by 2022 and the government is considering a proposal to stop burning coal for electricity by 2038 at the latest in a bid to curb greenhouse emissions.