90 years ago tonight, Los Angeles threw a party for electricity… And the photos are incredible. 


On October 9, 1936, power from Hoover Dam reached Los Angeles for the first time—and the city celebrated with searchlights, illuminated floats + streets packed with an estimated ONE MILLION people. 
At 7:36 p.m., Elizabeth Scattergood—daughter of LA power chief Ezra Scattergood, who helped bring Hoover Dam electricity to the city—pressed the ceremonial key marking its arrival from the Colorado River, 266 miles away.
Los Angeles City Hall blazed with light. Searchlights swept the sky. And Broadway became a glowing parade route for the celebration known as “Light on Parade.”
These photos capture a turning point in Downtown Los Angeles history, with familiar DTLA landmarks surrounded by a city celebrating its future. 
Swipe through the crowds, the ceremony + the enormous engineering effort behind this moment—from Hoover Dam and its transmission towers to massive electrical transformers. There’s even a close-up of the preserved ceremonial key. 
The Bureau of Power and Light, now part of LADWP, designed and built the high-voltage transmission lines that brought hydroelectric power across deserts + mountains to a rapidly growing Los Angeles.
LA already had electricity. This new source of power helped support the city’s growth.
Love old Los Angeles, historic architecture + the stories behind its landmarks? Join an LA Explained walking tour to explore LA history on foot. Dates and tickets at the link in bio! 

Photos courtesy of Los Angeles Public Library TESSA, offering instant access to rare and historical collections from Los Angeles. Additional images: Los Angeles Times, including photographers Jack Herod + Paul Calvert; California State Library; UCLA Library; Water and Power Associates.
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