In Recklinghausen Germany there is a museum right near the Rhine-Herne Canal. After sketching the canal, I walked over a footbridge and decided to go into the Umspannwerk museum. The museum tracks the progress of technology and energy in Germany. I figured that understanding the progress of energy in Germany might help me understand how energy fueled the German war machine during World War II.
What I decided to sketch was a large Tesla designed generator. A photo of Tesla was on the wall behind the generator. The front desk curators were very kind about getting me set up to sketch. Rather than getting my compact art stool outI decided to use a stackable chair that was with several other unused chairs behind the generator. The stackable chairs were locked together and I couldn’t get then unstuck. The guy behind the desk helped me by laying the chairs sideways on the floor and the. stepping on the legs. They snapped apart effortlessly.
The Ruhr area of Germany has deep veins of coal. The coal is fairly close to the surface near the Ruhr river in the south and it gets deeper as it is mined further to the north. What made the Ruhr area so important to the war was this source of energy.
Hydro power was used for some industry. Huge generators like the one I sketched would convert energy of spinning turbines spun by water onto electrical energy. Hydro electricity was important for specific industries like the aluminum and chemicals industries.
Germany’s energy consumption during WWII was characterized by a massive escalating demand primarily for oil (especially aviation fuel) which was provided through a huge synthetic fuel industry which converted coal to oil. This system collapsed under allied bombing, crippling the military by 1944-1945, forcing reliance on coal for electricity, and ultimately leading to fuel-starved German forces relying on horses.
The Allies crippled Germany’s energy by launching devastating bombing campaigns against oil fields, refineries, and synthetic fuel plants (the Allied Oil Plan), which drastically cut petroleum, oil, and lubricants production by over 90% by late 1944, which grounded the Luftwaffe and immobilized Panzer divisions, grinding the German war machine to a halt and severely limiting mobility for all forces. By 1945, the Wehrmacht was so fuel-starved that army vehicles were sometimes pulled by oxen, effectively ending mechanized warfare.