When the WKK energy plant needed to expand, they chose a box within a box design that enabled them to create a silent powerplant. In addition, they emphasized design to create a striking landmark powerplant.
"The building is completely covered in order to keep noise pollution to a minimum. A skin of steel is folded over the machinery and the giant filters and dampers. The building has space for people to work, with facilities like toilets and showers, but not an inch of space is wasted. The building has a sculptural role in the landscape. Its striking form is emphasized by the self-supporting steel skin. The skin is kept separate from the engine rooms to prevent the vibrations caused by low frequency sound in the gas turbines. This gives the building a box-within-a-box construction." - Zeinstravanderpol