Schedule II, Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

Schedule II, Valuation and Qualifying Accounts

PUBLIC SERVICE CO. OF COLORADO AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS

YEARS ENDED DEC. 31, 2016, 2015 AND 2014

(amounts in thousands)

			Additions
	Balance at Jan. 1		Charged to Costs and Expenses		Charged to Other Accounts(a)		Deductions from Reserves(b)		Balance at Dec. 31
Allowance for bad debts:
2016	$	20,122	$	14,121	$	4,447	$	19,078	$	19,612
2015	23,122		13,052		5,175		21,227		20,122
2014	22,505		17,005		6,240		22,628		23,122

^(a)  Recovery of amounts previously written off.

^(b)  Deductions relate primarily to bad debt write-offs.