Grand Canyon Power House is a former electric power plant that served National Park Service and concessioner facilities at the South Rim of the Grand Canyon in Grand Canyon National Park. It is significant for its architecture, which masks the building's industrial function behind a veneer of rustic design. It has been designated a National Historic Landmark on the basis of its design quality and the level of preservation of its equipment.
The Grand Canyon Power Plant is a concrete framed industrial building sheathed in a rustic exterior reminiscent of a huge Swiss chalet. Despite its bulk, the design of the plant carefully minimizes its apparent bulk and integrates it with the natural landscape. The design borrows elements from the similarly Swiss-rustic El Tovar Hotel located nearby. The building's details are scaled to produce a trompe-l'œil effect, with elements such as the balcony rail, eaves and windows about twice as big as would normally be expected.
The Grand Canyon Power Plant was declared a National Historic Landmark on May 28, 1987. It is also included in the Grand Canyon Village National Historic Landmark District.