In 1903, a steam generating plant, renamed the Peter O. Knight Station in 1969, was built on Jackson Street, and by 1906, the first turbo-generator was installed.

At the end of the century, Tampa Electric and parent company, TECO Energy, employed more than 5,000 men and women in six states and South America.

[1] On September 4, 2015, Emera, a utility holding company based in Halifax, Nova Scotia, Canada, announced the pending acquisition of TECO Energy.

That purchase closed on July 1, 2016, and TECO Energy, Inc. became a wholly owned subsidiary of Emera, Inc.[2] In late 2021, Tampa Electric announced its vision for its power plants to achieve a net zero carbon emission future by 2050.

Tampa Electric plans to invest in emerging technologies, such as carbon capture, biofuels, hydrogen, wind turbines and battery storage.

[3] Tampa Electric invested $5 million in 2022 to the University of South Florida's College of Engineering's Clean Energy Research Center in an effort to meet its target of having net-zero carbon emissions by 2050.

[6] On July 6, 2019, People's Gas, a division of Tampa Electric Company,[7] was accused of causing an explosion at a shopping center in Plantation, Florida, known as the Market on University.

In 2017, TECO had an explosion at its Big Bend power plant near Tampa, Florida killing five workers who were performing a dangerous procedure water jetting molten slag in a coal fired furnace.