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Regulatory Matters (Tables)
9 Months Ended
Sep. 30, 2020
Regulated Operations [Abstract]  
Schedule of Regulatory Assets
Regulatory assets and liabilities at September 30, 2020 and December 31, 2019 were comprised of the following items:
 
  
         Con Edison        CECONY
(Millions of Dollars)2020201920202019
Regulatory assets
Unrecognized pension and other postretirement costs$1,901$2,541$1,785$2,403
Environmental remediation costs723732645647
Revenue taxes345321331308
Pension and other postretirement benefits deferrals2747123747
Property tax reconciliation238219235210
MTA power reliability deferral200248200248
Deferred storm costs1587760 — 
Deferred derivative losses1568314576
COVID-19 pandemic deferrals102— 101— 
System peak reduction and energy efficiency programs9513194130
Municipal infrastructure support costs67756775
Brooklyn Queens demand management program36393639
Meadowlands heater odorization project33353335
Gate station upgrade project 26192619
Recoverable REV demonstration project costs24212219
Unamortized loss on reacquired debt22282126
Preferred stock redemption21222122
Non-wire alternative projects15141514
Workers’ compensation— 3— 3
Other219180204166
Regulatory assets – noncurrent4,6554,8594,2784,487
Deferred derivative losses116128104113
Recoverable energy costs50— 40 — 
Regulatory assets – current166128144113
Total Regulatory Assets$4,821$4,987$4,422$4,600
Regulatory liabilities
Future income tax$2,270$2,426$2,123$2,275
Allowance for cost of removal less salvage1,038989885843
TCJA net benefits* 337471327454
Net proceeds from sale of property 152173152173
Net unbilled revenue deferrals148199148199
Pension and other postretirement benefit deferrals79754346
Energy efficiency portfolio standard unencumbered funds6512262118
System benefit charge carrying charge60485444
Property tax refunds35453445
Unrecognized other postretirement costs339— — 
BQDM and REV Demo reconciliations26272426
Settlement of gas proceedings22102210
Sales and use tax refunds178178
Earnings sharing - electric, gas and steam16221015
Settlement of prudence proceeding6868
Other265195227163
Regulatory liabilities – noncurrent4,5694,8274,1344,427
Deferred derivative gains57345434
Refundable energy costs3344812
Revenue decoupling mechanism— 24— 17
Regulatory liabilities – current901026263
Total Regulatory Liabilities$4,659$4,929$4,196$4,490
* See "Other Regulatory Matters," above.
Schedule of Regulatory Liabilities
Regulatory assets and liabilities at September 30, 2020 and December 31, 2019 were comprised of the following items:
 
  
         Con Edison        CECONY
(Millions of Dollars)2020201920202019
Regulatory assets
Unrecognized pension and other postretirement costs$1,901$2,541$1,785$2,403
Environmental remediation costs723732645647
Revenue taxes345321331308
Pension and other postretirement benefits deferrals2747123747
Property tax reconciliation238219235210
MTA power reliability deferral200248200248
Deferred storm costs1587760 — 
Deferred derivative losses1568314576
COVID-19 pandemic deferrals102— 101— 
System peak reduction and energy efficiency programs9513194130
Municipal infrastructure support costs67756775
Brooklyn Queens demand management program36393639
Meadowlands heater odorization project33353335
Gate station upgrade project 26192619
Recoverable REV demonstration project costs24212219
Unamortized loss on reacquired debt22282126
Preferred stock redemption21222122
Non-wire alternative projects15141514
Workers’ compensation— 3— 3
Other219180204166
Regulatory assets – noncurrent4,6554,8594,2784,487
Deferred derivative losses116128104113
Recoverable energy costs50— 40 — 
Regulatory assets – current166128144113
Total Regulatory Assets$4,821$4,987$4,422$4,600
Regulatory liabilities
Future income tax$2,270$2,426$2,123$2,275
Allowance for cost of removal less salvage1,038989885843
TCJA net benefits* 337471327454
Net proceeds from sale of property 152173152173
Net unbilled revenue deferrals148199148199
Pension and other postretirement benefit deferrals79754346
Energy efficiency portfolio standard unencumbered funds6512262118
System benefit charge carrying charge60485444
Property tax refunds35453445
Unrecognized other postretirement costs339— — 
BQDM and REV Demo reconciliations26272426
Settlement of gas proceedings22102210
Sales and use tax refunds178178
Earnings sharing - electric, gas and steam16221015
Settlement of prudence proceeding6868
Other265195227163
Regulatory liabilities – noncurrent4,5694,8274,1344,427
Deferred derivative gains57345434
Refundable energy costs3344812
Revenue decoupling mechanism— 24— 17
Regulatory liabilities – current901026263
Total Regulatory Liabilities$4,659$4,929$4,196$4,490
* See "Other Regulatory Matters," above.