(millions)	2020		2019			2018
Natural gas sales to/(from) affiliates	$	(139)	$	(111	)	$	(38	)
Services received from affiliates		6		65			65
Dividends to TECO Energy		408		373			362
Equity contributions from TECO Energy		505		395			345

In 2019 and 2018, services received from affiliates primarily included shared services provided to TEC from TSI, TECO Energy’s centralized services company subsidiary. In December 2019, most TSI employees were transferred to Tampa Electric. The transfer of these employees to Tampa Electric did not materially impact shared service costs or the TEC Consolidated Statement of Income. In 2020, the shared service costs were not recorded through TSI but rather directly recorded in TEC’s O&M expenses on the TEC Consolidated Statement of Income.

(millions)	2020		2019
Accounts receivable related to asset management agreements to Emera Energy Services Inc. ⁽¹⁾	$	4	$	4
Accounts receivable excluding asset management agreements ⁽¹⁾		7		10
Accounts payable ⁽¹⁾		27		16
Taxes payable ⁽²⁾		19		4

(1)	Accounts receivable and accounts payable were incurred in the ordinary course of business and do not bear interest.

(2)	Taxes payable were due to EUSHI. See Note 4 for additional information.