Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue Recognition [Abstract]

Summary of Disaggregates TEC Revenue by Major Source

The following disaggregates TEC’s revenue by major source:

(millions)	Tampa								Tampa Electric
For the year ended December 31, 2018	Electric			PGS		Eliminations			Company
Electric revenue
Residential	$	1,067		$	0	$	0		$	1,067
Commercial		582			0		0			582
Industrial		161			0		0			161
Regulatory deferrals and unbilled revenue		(2	)		0		0			(2	)
Other (1)		258			0		(3	)		255
Total electric revenue		2,066			0		(3	)		2,063
Gas revenue
Residential		0			157		0			157
Commercial		0			151		0			151
Industrial (2)		0			21		0			21
Other (3)		0			159		(27	)		132
Total gas revenue		0			488		(27	)		461
Total revenue	$	2,066		$	488	$	(30	)	$	2,524

(1)    Other includes sales to public authorities, off-system sales to other utilities and various other items.

(2)    Industrial includes sales to power generation customers.

(3)    Other includes off-system sales to other utilities and various other items.