The house had pure candle lighting until 1854/55 - on the stage and in the auditorium, which remained lit during the performance because the pure stage lighting would otherwise not have been sufficient. A nightmare for every fireman. Then, in the middle of the 19th century, gas lighting was introduced. Now it was possible to regulate and dim the light and even work with lighting effects. But it was still a fire hazard. At the end of the 19th century, the National Theatre was one of the first theatres in Europe to be completely electrified.