Exact federal listing answer
Is Idaho Power Substation on the National Register?
Yes · NPS status: Listed
Yes. Reference 78001100 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Idaho Power Substation as Listed in the National Register of Historic Places under reference 78001100.
Federal statusListed
National Register reference78001100
Listed dateJune 23, 1978
Property categoryBuilding
Published addressVan Buren St. and Filer Ave.
LocalityTwin Falls, Twin Falls County, Idaho
Significance levelState
Published acreage0.9
Exact answer boundaryThis confirms the named federal record only.
It does not prove that another address lies inside this property or district, establish local landmark status, decide preservation review, define a legal boundary, or describe ownership or current condition.
Why the wording is date-boundedThe answer reflects the NPS dataset published through May 22, 2026 and a live NPS GIS Listed-status cross-check made September 20, 2026. NPS notes that spatial points and polygons may need correction and are not legal documents.
Additional published fields
Areas of significance: ARCHITECTURE.
Same locality
Other released Twin Falls records.
Each linked page answers a separate named federal record.