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Regulatory Assets and Liabilities (Tables)
3 Months Ended
Mar. 31, 2017
Regulatory Assets and Liabilities Disclosure [Abstract]  
Schedule of Regulatory Assets
Regulatory assets and liabilities include the following:
 
March 31, 2017
December 31, 2016
(millions)
 
 
Dominion
 
 
Regulatory assets:
 
 
Deferred rate adjustment clause costs(1)
$
75

$
63

Deferred nuclear refueling outage costs(2)
53

71

Other
103

110

Regulatory assets-current(3)
231

244

Unrecognized pension and other postretirement benefit costs(4)
1,328

1,401

Deferred rate adjustment clause costs(1)
328

329

PJM transmission rates(5)
200

192

Derivatives(6)
172

174

Income taxes recoverable through future rates(7)
138

123

Utility reform legislation(8)
110

99

Other
163

155

Regulatory assets-noncurrent
2,439

2,473

Total regulatory assets
$
2,670

$
2,717

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(9)
$
33

$
61

PIPP(10)
23

28

Other
105

74

Regulatory liabilities-current(11)
161

163

Provision for future cost of removal and AROs(12)
1,450

1,427

Nuclear decommissioning trust(13)
953

902

Derivatives(6)
70

69

Other
272

224

Regulatory liabilities-noncurrent
2,745

2,622

Total regulatory liabilities
$
2,906

$
2,785

Virginia Power
 

 

Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
71

$
51

Deferred nuclear refueling outage costs(2)
53

71

Other
66

57

Regulatory assets-current(3)
190

179

Deferred rate adjustment clause costs(1)
232

246

PJM transmission rates(5)
200

192

Derivatives(6)
137

133

Income taxes recoverable through future rates(7)
81

76

Other
126

123

Regulatory assets-noncurrent
776

770

Total regulatory assets
$
966

$
949

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(9)
$
33

$
61

Other
49

54

Regulatory liabilities-current(11)
82

115

Provision for future cost of removal(12)
965

946

Nuclear decommissioning trust(13)
953

902

Derivatives(6)
70

69

Other
76

45

Regulatory liabilities-noncurrent
2,064

1,962

Total regulatory liabilities
$
2,146

$
2,077

Dominion Gas
 
 
Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
4

$
12

Unrecovered gas costs(14)

12

Other
3

2

Regulatory assets-current(3)
7

26

Unrecognized pension and other postretirement benefit costs(4)
305

358

Utility reform legislation(8)
110

99

Deferred rate adjustment clause costs(1)
89

79

Income taxes recoverable through future rates(7)
25

23

Other
21

18

Regulatory assets-noncurrent(15)
550

577

Total regulatory assets
$
557

$
603

Regulatory liabilities:
 

 

PIPP(10)
$
23

$
28

Other
23

7

Regulatory liabilities-current(11)
46

35

Provision for future cost of removal and AROs(12)
175

174

Other
62

45

Regulatory liabilities-noncurrent(16)
237

219

Total regulatory liabilities
$
283

$
254


(1)
Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.
(2)
Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.
(3)
Current regulatory assets are presented in other current assets in Dominion's, Virginia Power's and Dominion Gas' Consolidated Balance Sheets.
(4)
Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's and Dominion Gas' rate-regulated subsidiaries.
(5)
Reflects amounts related to PJM transmission cost allocation matter. See Note 12 for more information.
(6)
For jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.
(7)
Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.
(8)
Ohio legislation under House Bill 95, which became effective in September 2011. This law updates natural gas legislation by enabling gas companies to include more up-to-date cost levels when filing rate cases. It also allows gas companies to seek approval of capital expenditure plans under which gas companies can recognize carrying costs on associated capital investments placed in service and can defer the carrying costs plus depreciation and property tax expenses for recovery from ratepayers in the future.
(9)
Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Dominion's and Virginia Power's generation operations.
(10)
Under PIPP, eligible customers can make reduced payments based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rate adjustment clause according to East Ohio tariff provisions.
(11)
Current regulatory liabilities are presented in other current liabilities in Dominion's, Virginia Power's and Dominion Gas' Consolidated Balance Sheets.
(12)
Rates charged to customers by the Companies' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.
(13)
Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs.
(14)
Reflects unrecovered gas costs at regulated gas operations, which are recovered through filings with the applicable regulatory authority.
(15)
Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Gas' Consolidated Balance Sheets.
(16)
Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.

Schedule of Regulatory Liabilities
Regulatory assets and liabilities include the following:
 
March 31, 2017
December 31, 2016
(millions)
 
 
Dominion
 
 
Regulatory assets:
 
 
Deferred rate adjustment clause costs(1)
$
75

$
63

Deferred nuclear refueling outage costs(2)
53

71

Other
103

110

Regulatory assets-current(3)
231

244

Unrecognized pension and other postretirement benefit costs(4)
1,328

1,401

Deferred rate adjustment clause costs(1)
328

329

PJM transmission rates(5)
200

192

Derivatives(6)
172

174

Income taxes recoverable through future rates(7)
138

123

Utility reform legislation(8)
110

99

Other
163

155

Regulatory assets-noncurrent
2,439

2,473

Total regulatory assets
$
2,670

$
2,717

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(9)
$
33

$
61

PIPP(10)
23

28

Other
105

74

Regulatory liabilities-current(11)
161

163

Provision for future cost of removal and AROs(12)
1,450

1,427

Nuclear decommissioning trust(13)
953

902

Derivatives(6)
70

69

Other
272

224

Regulatory liabilities-noncurrent
2,745

2,622

Total regulatory liabilities
$
2,906

$
2,785

Virginia Power
 

 

Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
71

$
51

Deferred nuclear refueling outage costs(2)
53

71

Other
66

57

Regulatory assets-current(3)
190

179

Deferred rate adjustment clause costs(1)
232

246

PJM transmission rates(5)
200

192

Derivatives(6)
137

133

Income taxes recoverable through future rates(7)
81

76

Other
126

123

Regulatory assets-noncurrent
776

770

Total regulatory assets
$
966

$
949

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(9)
$
33

$
61

Other
49

54

Regulatory liabilities-current(11)
82

115

Provision for future cost of removal(12)
965

946

Nuclear decommissioning trust(13)
953

902

Derivatives(6)
70

69

Other
76

45

Regulatory liabilities-noncurrent
2,064

1,962

Total regulatory liabilities
$
2,146

$
2,077

Dominion Gas
 
 
Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
4

$
12

Unrecovered gas costs(14)

12

Other
3

2

Regulatory assets-current(3)
7

26

Unrecognized pension and other postretirement benefit costs(4)
305

358

Utility reform legislation(8)
110

99

Deferred rate adjustment clause costs(1)
89

79

Income taxes recoverable through future rates(7)
25

23

Other
21

18

Regulatory assets-noncurrent(15)
550

577

Total regulatory assets
$
557

$
603

Regulatory liabilities:
 

 

PIPP(10)
$
23

$
28

Other
23

7

Regulatory liabilities-current(11)
46

35

Provision for future cost of removal and AROs(12)
175

174

Other
62

45

Regulatory liabilities-noncurrent(16)
237

219

Total regulatory liabilities
$
283

$
254


(1)
Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.
(2)
Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.
(3)
Current regulatory assets are presented in other current assets in Dominion's, Virginia Power's and Dominion Gas' Consolidated Balance Sheets.
(4)
Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's and Dominion Gas' rate-regulated subsidiaries.
(5)
Reflects amounts related to PJM transmission cost allocation matter. See Note 12 for more information.
(6)
For jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.
(7)
Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.
(8)
Ohio legislation under House Bill 95, which became effective in September 2011. This law updates natural gas legislation by enabling gas companies to include more up-to-date cost levels when filing rate cases. It also allows gas companies to seek approval of capital expenditure plans under which gas companies can recognize carrying costs on associated capital investments placed in service and can defer the carrying costs plus depreciation and property tax expenses for recovery from ratepayers in the future.
(9)
Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Dominion's and Virginia Power's generation operations.
(10)
Under PIPP, eligible customers can make reduced payments based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rate adjustment clause according to East Ohio tariff provisions.
(11)
Current regulatory liabilities are presented in other current liabilities in Dominion's, Virginia Power's and Dominion Gas' Consolidated Balance Sheets.
(12)
Rates charged to customers by the Companies' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.
(13)
Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs.
(14)
Reflects unrecovered gas costs at regulated gas operations, which are recovered through filings with the applicable regulatory authority.
(15)
Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Gas' Consolidated Balance Sheets.
(16)
Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.