The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations at December 31,:



	PPL				PPL Electric
	2016		2015		2016		2015
Current Regulatory Assets:
Environmental cost recovery	$	6	$	24	$	—	$	—
Generation formula rate	11		7		—		—
Transmission service charge	7		10		7		10
Smart meter rider	6		2		6		2
Storm costs	5		—		5		—
Other	4		5		1		1
Total current regulatory assets (a)	$	39	$	48	$	19	$	13

Noncurrent Regulatory Assets:
Defined benefit plans	$	947	$	809	$	549	$	469
Taxes recoverable through future rates	340		326		340		326
Storm costs	57		93		9		30
Unamortized loss on debt	61		68		36		42
Interest rate swaps	129		141		—		—
Accumulated cost of removal of utility plant	159		137		159		137
AROs	211		143		—		—
Other	14		16		1		2
Total noncurrent regulatory assets	$	1,918	$	1,733	$	1,094	$	1,006



Current Regulatory Liabilities:
Generation supply charge	$	23	$	41	$	23	$	41
Demand side management	3		8		—		—
Gas supply clause	—		6		—		—
Universal service rider	14		5		14		5
Transmission formula rate	15		48		15		48
Fuel adjustment clause	11		14		—		—
Act 129 compliance rider	17		—		17		—
Storm damage expense	13		16		13		16
Other	5		7		1		3
Total current regulatory liabilities	$	101	$	145	$	83	$	113

Noncurrent Regulatory Liabilities:
Accumulated cost of removal of utility plant	$	700	$	691	$	—	$	—
Coal contracts (b)	—		17		—		—
Power purchase agreement - OVEC (b)	75		83		—		—
Net deferred tax assets	23		23		—		—
Act 129 compliance rider	—		22		—		22
Defined benefit plans	23		24		—		—
Interest rate swaps	78		82		—		—
Other	—		3		—		—
Total noncurrent regulatory liabilities	$	899	$	945	$	—	$	22



	LKE				LG&E				KU
	2016		2015		2016		2015		2016		2015
Current Regulatory Assets:
Environmental cost recovery	$	6	$	24	$	6	$	13	$	—	$	11
Generation formula rate	11		7		—		—		11		7
Other	3		4		3		3		—		1
Total current regulatory assets	$	20	$	35	$	9	$	16	$	11	$	19



	LKE				LG&E				KU
	2016		2015		2016		2015		2016		2015

Noncurrent Regulatory Assets:
Defined benefit plans	$	398	$	340	$	246	$	215	$	152	$	125
Storm costs	48		63		26		35		22		28
Unamortized loss on debt	25		26		16		17		9		9
Interest rate swaps	129		141		88		98		41		43
AROs	211		143		70		57		141		86
Plant retirement costs	4		6		—		—		4		6
Other	9		8		4		2		5		6
Total noncurrent regulatory assets	$	824	$	727	$	450	$	424	$	374	$	303



Current Regulatory Liabilities:
Demand side management	$	3	$	8	$	2	$	4	$	1	$	4
Gas supply clause	—		6		—		6		—		—
Fuel adjustment clause	11		14		2		2		9		12
Other	4		4		1		1		3		3
Total current regulatory liabilities	$	18	$	32	$	5	$	13	$	13	$	19

Noncurrent Regulatory Liabilities:
Accumulated cost of removal
of utility plant	$	700	$	691	$	305	$	301	$	395	$	390
Coal contracts (b)	—		17		—		7		—		10
Power purchase agreement - OVEC (b)	75		83		52		57		23		26
Net deferred tax assets	23		23		23		23		—		—
Defined benefit plans	23		24		—		—		23		24
Interest rate swaps	78		82		39		41		39		41
Other	—		3		—		2		—		1
Total noncurrent regulatory liabilities	$	899	$	923	$	419	$	431	$	480	$	492


(a)	For PPL, these amounts are included in "Other current assets" on the Balance Sheets.


(b)	These liabilities were recorded as offsets to certain intangible assets that were recorded at fair value upon the acquisition of LKE by PPL.