Mission, British Columbia, Canada. The installation is composed of three dams, the intake dam, the main dam and the blind slough dam, a powerhouse, switchyard, and associated equipment. Dominating the site, the powerhouse below the dams that created Stave Lake, is a steel reinforced concrete building, housing a museum and interpretive centre dedicated to the history of the hydro-electricity in British Columbia. The official recognition refers to the site and its associated structures. Stave Falls Hydro-Electric Installation was designated a national historic site of Canada because: - it is an excellent representation of the core period of hydro-electric technological development among the approximately extant stations built between across Canada.
Completed in and expanded in the s, the Stave Falls Hydro-Electric Installation is a well-preserved example of a typical hydro-electric plant of the early 20th century. Many problems associated with hydro-electricity were solved at this time and hydro-electric installations proliferated in a country rich in waterpower.
Stave Falls was a typical plant of this second phase in terms of its design and technology. The Western Canada Power Company constructed the first portion in to accommodate two turbine units and two generator units. Phase one of the building was designed with Italianate style elements. The second portion was added in to accommodate two additional units. The B. Electric Railway Company, which merged with the Western Power Company in , constructed the next section in to provide room for a larger fifth unit.
Phases two and three have Gothic Revival style elements. Despite the differences in architectural design influences, the overall impression is one of integration and unity. The main generator hall is an impressive space that is the heart of the Power House. The setting for the large turbines and generators is both monumental and elegant. The concrete arches in relief on the upstream wall, clerestory windows and exposed steel trusses are a graceful reflection of the circular turbines and reinforce the rhythm of the large machinery from above and below.
The interior space and the equipment tell the story of how water was turned into electricity, and illustrate the progress of generator technology as one walks from east to west through the Generator Hall. The Stave Falls Power House has provided electrical power to the Lower Mainland and the Fraser Valley for most of the twentieth century and has contributed considerably to the area's ability to prosper during the early years of urbanization. This building is also significant for its rehabilitation in as a public educational centre.
Its longevity and nearly one hundred years of power production could only have been achieved through the work of the operators, mechanics and electricians who passed on their knowledge from one generation to the next.
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