Question: What powers the 300 East?

Context paragraphs:
Upland station: Upland station is at 300 East A Street in Upland, California, just east of Euclid Ave. It has 170 free parking spaces.  The station is part of the Metrolink commuter railway's San Bernardino Line.

300 East (UTA station): 300 East is a streetcar stop in South Salt Lake, Utah, in the United States, served by Utah Transit Authority's (UTA) S Line (previously known as the Sugar House Streetcar).  The S Line provides service from the Sugar House neighborhood of Salt Lake City to the city of South Salt Lake (where it connects with UTA's TRAX light rail system).

300 East 57th Street: 300 East 57th Street is an apartment building on the corner of East 57th Street and Second Avenue in the Midtown neighborhood of Manhattan, New York City.

Town Clock Church: The Town Clock Church, now the Second Baptist Church of New Albany, Indiana, United States, is a historic church located at 300 East Main Street, within the New Albany Downtown Historic District.  It was constructed in 1852 as Second Presbyterian Church, in what was then the largest city in Indiana.  It is near the Ohio River, across the border from Louisville, Kentucky.  It was a station on the Underground Railroad.

Gale, Indiana: Gale is an unincorporated community in Center Township, Hendricks County, Indiana, United States.  Gale is located on the east side of Danville, just along country road 300 east.

Salt Lake City Police Department: The Salt Lake City Police Department (SLCPD) is headquartered in downtown Salt Lake City, Utah, United States at 475 South and 300 East, one block east of the Salt Lake City Public Library.  This headquarters is called the Salt Lake City Public Safety Building and is shared with the Salt Lake City Fire Department.  The department was founded in 1851, under the newly created City Charter, when the Mayor authorized a police department to be created and forty men were appointed, earning 25 cents-an-hour.  The SLCPD is a member city of the Major Cities Chiefs Association in its Western Region.

Dallin House: The Dallin House at 253 S. 300 East in Springville, Utah was built in c. 1905.  It is significant for its association with sculptor Cyrus E. Dallin (1861-1944).

Tram: A tram (also tramcar; and in North America streetcar, trolley or trolley car) is a rail vehicle which runs on tracks along public urban streets, and also sometimes on a segregated right of way.  The lines or networks operated by tramcars are called tramways.  Tramways powered by electricity, the most common type historically, were once called electric street railways (mainly in the United States) due to them being widely used in urban areas before the universal adoption of electrification.

Bay County Courthouse (Florida): The Bay County Courthouse is an historic yellow brick courthouse building located at 300 East 4th Street in Panama City, Florida.  Built in 1915 in the Classical Revival style, it is Bay County's first and only courthouse.  After a 1920 fire gutted the building, it was rebuilt in a much simpler form without its entrance pediment, gabled roof system and ornate central clock tower.  The entrance columns and entablature, however, were retained.  Later additions have been built on its left side.

Jackson Square (Salt Lake City): Jackson Square is an early subdivision of Salt Lake City, Utah developed by Kimball and Richards Land Merchants in 1909.  The neighborhood's boundaries are 200 East, 300 East, and what was then described as 9th South and 10th South.  The streets include Hampton Avenue, Kelsey Avenue, and Edith Avenue (today's 1130 South, 1165 South and 1205 South, respectively).

Supporting paragraphs: 300 East (UTA station) Tram
Answer: electricity