Adams Power Plant Transformer House
National Historic Landmarked building constructed in 1895
Adams Power Plant Transformer House in Niagara Falls, New York is a National Historic Landmark constructed in 1895. It is the only remaining structure that was part of the historic Edward Dean Adams Power Plant, the first large-scale, alternating current electric generating plant in the world, built in 1895. The building's eponym was Edward Dean Adams, a businessman and entrepreneur in the electrical field.
History
The Adams power plant followed an 1886 plan by engineer Thomas Evershed to tap the power of Niagara Falls, which involved a "hydraulic canal" and a 7,500 feet (2,300 m) brick-lined tunnel, when the Niagara Falls Power Company was formed. The Cataract Construction Company, a new company formed to exploit the opportunity, led by president Edward Dean Adams, first formed the International Niagara Commission in 1890 to come up with a plan for harnessing the Falls. The Commission favored electricity, but could not recommend a solution to Cataract.
In 1892, George Forbes was hired as a technical consultant and in May 1893 he convinced the company to build a hydroelectric system based on polyphase alternating current. Westinghouse Electric was subcontracted to build 5,000 horsepower (3,700 kW) 25 Hz AC generators, based on the work of Nikola Tesla and Benjamin G. Lamme, while the I. P. Morris Company of Philadelphia built the turbines based on the design of the Swiss company Faesch and Piccard.
The power plant went into operation on August 25, 1895. The transformer house building was designed by the architectural firm of McKim, Mead, and White.
This brief starts where responsible research should: with the source description of “Adams Power Plant Transformer House” as national Historic Landmarked building constructed in 1895. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as national Historic Landmarked building constructed in 1895. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Aug 31, 2026. The linked authority identifier is Q4680392. Authority coordinates are 43.082, -79.043. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1895, 1886, 1890 and 1892.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Adams Power Plant Transformer House”, its source revision and the description used here.
- Expand the search: follow Adams Power Plant Transformer House primary sources, Adams Power Plant Transformer House archive and Adams research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Adams Power Plant Transformer House”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Adams Power Plant Transformer House” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.