The emergence of trolley parks in the last dozen years of the 19th century coincided with the rise to prominence of three entities: the electric companies (which grew rapidly as much of the United States was undergoing electrification since the 1880s), the railway companies (which constructed new interurban rail lines mainly in the eastern half of the U. S.), and – starting about 1890 – the replacement of horse-drawn cars by electric trolley companies.
Originally, the trolleys and interurban lines would either operate at a reduced level on weekends or be completely idle.
Like their Luna Park and White City cousins, a typical Electric Park featured a shoot-the-chutes and lagoon, a roller coaster (usually a figure eight or a mountain railway), a midway, a Ferris wheel, games, and a pavilion.
The competition was fierce, often driving the electric parks out of business with increasing costs of equipment upgrades, upkeep, and insurance.
While the date and location of the first Electric Park is currently unknown,[3][page needed] several existed before 1900.