To add to the recently revealed photo of the Sunnyside Powerhouse, here are five more images from the same album at the San Mateo County Historical Association, including unseen interior shots from the engine room. They were taken by a photographer from the company that supplied the engines, Risdon Iron Works, on the occasion of the opening of the powerhouse and the new electric streetcar line in April 1892.
These new photos are unmatched by any other known ones of Sunnyside’s lost landmark, all of which date to after the powerhouse ceased to operate in 1901. These show a car house and power plant just constructed, ready to revolutionize San Francisco’s urban railways with the introduction of electricity for propulsion. For the first time, the machinery of the powerhouse engine room can be seen.
On 5 January 1911, a photographer named John Henry Mentz came out to Sunnyside to take some shots on a chilly, partly cloudy day. He was the skilled official photographer for United Railroads of San Francisco (URR, which became Muni later). His photos documented the streetcar tracks, but naturally other things were included. Thanks to the availability of high-definition scans of these three images from SFMTA, we can glimpse life on that day in Sunnyside history, complete with a family on the way to the shops and goats grazing on the railroad tracks. The photos were taken on the first block of Monterey Boulevard, near Circular Avenue. First the photos with details, then a comparison to today.
A Thursday Afternoon on Monterey
First Mentz took this image, with a large 8×10 camera and a glass-plate negative positioned squarely in the middle of the unpaved road, facing east (towards what is now Glen Park).
Sunnyside played an important role in the development of the first electric streetcar in San Francisco. The pioneering enterprise was initiated in 1890 by streetcar-railway engineer John Wesley Hartzell, with financial backing from millionaire real-estate speculator Behrend Joost. Before that, horse-powered and cable-driven streetcars were the norm in the city. Soon the newly introduced technology would power many of San Francisco’s many privately-held transit lines.
But the San Francisco and San Mateo Railway was the first electric railroad in the city, and central to the project, producing the electric energy to run the line, was the Sunnyside Powerhouse, located on the flatiron-shaped block at the eastern end of Monterey Boulevard, then called Sunnyside Avenue.
Although a sparsely populated neighborhood during the decades around the turn of the last century, Sunnyside had both a streetcar—San Francisco’s first electric car—and the Southern Pacific San Francisco-San Jose steam train running along its eastern border. The two lines crossed at an oblique angle, just south of Monterey Boulevard at Joost Avenue—an area now disappeared by the excavations for I-280. It was referred to as the Sunnyside crossing, and was a notorious site of fatalities and injuries during these years.