The Saint John's Power House heats and cools all the buildings on the main campus and, in so doing, generates about one-fourth of the electricity consumed by the campus. As a co-generation plant, the high pressure steam coming off the boilers is first passed through generators to generate electricity; the generators exhaust the steam at lower pressure, and this is distibuted to heat the buildings. In summer time, the steam is passed through steam absorption chillers to produce chilled water for distribution to cool the campus facilities.
The Power House has six boilers and is able to burn coal, natural gas, or fuel oil -- depending on price. It employs four absorption chillers. A baghouse was recently installed to reduce the pollution impact of the plant.
The campus domestic water supply is also supplied by the Power House through two wells. Campus irrigation is pumped from Stumpf Lake.
This property is listed in the National Register of Historic Places by the United States Department of the Interior.