Supplemental Financial Information (All Registrants)

Supplemental Statement of Operations Information

The following tables provide additional information about the Registrants’ Consolidated Statements of Operations and Comprehensive Income for the three and six months ended June 30, 2017 and 2016.



	Three Months Ended June 30, 2017
													Successor
	Exelon			Generation			ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Other, Net
Decommissioning-related activities:
Net realized income on decommissioning trust funds^(a)
Regulatory agreement units	$	211		$	211		$	—	$	—	$	—	$	—	$	—	$	—	$	—
Non-regulatory agreement units	74			74			—		—		—		—		—		—		—
Net unrealized (losses) gains on decommissioning trust funds
Regulatory agreement units	(13		)	(13		)	—		—		—		—		—		—		—
Non-regulatory agreement units	70			70			—		—		—		—		—		—		—
Net unrealized losses on pledged assets
Zion Station decommissioning	(2		)	(2		)	—		—		—		—		—		—		—
Regulatory offset to decommissioning trust fund-related activities^(b)	(160		)	(160		)	—		—		—		—		—		—		—
Total decommissioning-related activities	180			180			—		—		—		—		—		—		—
Investment income	2			1			—		—		—		—		—		—		—
Interest expense related to uncertain income tax positions	(1		)	—			—		—		—		—		—		—		—
Penalty related to uncertain income tax positions	1			—			—		—		—		—		—		—		—
AFUDC — Equity	17			—			2		2		4		9		5		2		2
Other	6			—			2		—		—		4		2		1		—
Other, net	$	205		$	181		$	4	$	2	$	4	$	13	$	7	$	3	$	2



	Six Months Ended June 30, 2017
														Successor
	Exelon			Generation			ComEd		PECO			BGE		PHI		Pepco		DPL		ACE
Other, Net
Decommissioning-related activities:
Net realized income on decommissioning trust funds^(a)
Regulatory agreement units	$	280		$	280		$	—	$	—		$	—	$	—	$	—	$	—	$	—
Non-regulatory agreement units	106			106			—		—			—		—		—		—		—
Net unrealized gains on decommissioning trust funds
Regulatory agreement units	210			210					—			—		—		—		—		—
Non-regulatory agreement units	235			235			—		—			—		—		—		—		—
Net unrealized losses on pledged assets
Zion Station decommissioning	(2		)	(2		)			—			—		—		—		—		—
Regulatory offset to decommissioning trust fund-related activities^(b)	(396		)	(396		)	—		—			—		—		—		—		—
Total decommissioning-related activities	433			433			—		—			—		—		—		—		—
Investment income (expense)	4			3			—		(1		)	—		1		1		—		—
Penalty income related to uncertain income tax positions	2			—			—		—			—		—		—		—		—
AFUDC — Equity	33			—			4		4			8		17		11		3		3
Other	16			4			4		—			—		8		3		3		1
Other, net	$	488		$	440		$	8	$	3		$	8	$	26	$	15	$	6	$	4



	Three Months Ended June 30, 2016
													Successor
	Exelon			Generation			ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Other, Net
Decommissioning-related activities:
Net realized income on decommissioning trust funds^(a)
Regulatory agreement units	$	90		$	90		$	—	$	—	$	—	$	—	$	—	$	—	$	—
Non-regulatory agreement units	39			39			—		—		—		—		—		—		—
Net unrealized gains on decommissioning trust funds
Regulatory agreement units	52			52			—		—		—		—		—		—		—
Non-regulatory agreement units	48			48			—		—		—		—		—		—		—
Net unrealized gains on pledged assets
Zion Station decommissioning	1			1			—		—		—		—		—		—		—
Regulatory offset to decommissioning trust fund-related activities^(b)	(117		)	(117		)	—		—		—		—		—		—		—
Total decommissioning-related activities	113			113			—		—		—		—		—		—		—
Investment income	6			5			—		—		—		—		—		—		—
Interest income related to uncertain income tax positions	4			—			—		—		—		—		—		—		—
AFUDC — Equity	15			—			1		2		5		7		5		1		1
Other	6			(1		)	2		—		—		4		1		2		1
Other, net	$	144		$	117		$	3	$	2	$	5	$	11	$	6	$	3	$	2



																				Successor		Predecessor
	Six Months Ended June 30, 2016																			March 24, 2016 to June 30, 2016		January 1, 2016 to March 23, 2016
	Exelon			Generation			ComEd		PECO			BGE		Pepco		DPL		ACE		PHI		PHI
Other, Net
Decommissioning-related activities:
Net realized income on decommissioning trust funds^(a)
Regulatory agreement units	$	122		$	122		$	—	$	—		$	—	$	—	$	—	$	—	$	—	$	—
Non-regulatory agreement units	61			61			—		—			—		—		—		—		—		—
Net unrealized gains on decommissioning trust funds
Regulatory agreement units	131			131			—		—			—		—		—		—		—		—
Non-regulatory agreement units	100			100			—		—			—		—		—		—		—		—
Net unrealized gains on pledged assets
Zion Station decommissioning	3			3					—			—		—		—		—		—		—
Regulatory offset to decommissioning trust fund-related activities^(b)	(211		)	(211		)	—		—			—		—		—		—		—		—
Total decommissioning-related activities	206			206			—		—			—		—		—		—		—		—
Investment income (expense)	12			5			—		(1		)	2		—		—		—		—		—
Long-term lease income	4			—			—		—			—		—		—		—		—		—
Interest income related to uncertain income tax positions	5			—			—		—			—		1		—		1		—		—
AFUDC — Equity	24			—			3		4			9		9		2		3		8		7
Loss on debt extinguishment	(3		)	(2		)	—		—			—		—		—		—		—		—
Other	10			1			4		1			—		4		4		1		4		(11		)
Other, net	$	258		$	210		$	7	$	4		$	11	$	14	$	6	$	5	$	12	$	(4	)

____


(a)	Includes investment income and realized gains and losses on sales of investments of the trust funds.


(b)	Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of net income taxes related to all NDT fund activity for those units. See Note 16 — Asset Retirement Obligations of the Exelon 2016 Form 10-K for additional information regarding the accounting for nuclear decommissioning.

The following utility taxes are included in revenues and expenses for the three and six months ended June 30, 2017 and 2016. Generation’s utility tax expense represents gross receipts tax related to its retail operations, and the utility registrants' utility tax expense represents municipal and state utility taxes and gross receipts taxes related to their operating revenues. The offsetting collection of utility taxes from customers is recorded in revenues on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.




	Three Months Ended June 30, 2017
											Successor
	Exelon		Generation		ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Utility taxes	$	213	$	30	$	57	$	29	$	21	$	76	$	72	$	4	$	—



	Six Months Ended June 30, 2017
											Successor
	Exelon		Generation		ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Utility taxes	$	438	$	63	$	116	$	60	$	47	$	152	$	143	$	9	$	—




	Three Months Ended June 30, 2016
											Successor
	Exelon		Generation		ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Utility taxes	$	217	$	27	$	60	$	32	$	21	$	77	$	73	$	4	$	—



																	Successor		Predecessor
	Six Months Ended June 30, 2016																March 24, 2016 to June 30, 2016		January 1, 2016 to March 23, 2016
	Exelon		Generation		ComEd		PECO		BGE		Pepco		DPL		ACE		PHI		PHI
Utility taxes	$	369	$	55	$	119	$	66	$	45	$	152	$	9	$	—	$	84	$	77

Supplemental Cash Flow Information

The following tables provide additional information regarding the Registrants’ Consolidated Statements of Cash Flows for the six months ended June 30, 2017 and 2016.



	Six Months Ended June 30, 2017
											Successor
	Exelon		Generation		ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Depreciation, amortization and accretion
Property, plant and equipment^(a)	$	1,545	$	612	$	384	$	129	$	155	$	227	$	101	$	61	$	44
Amortization of regulatory assets^(a)	238		—		35		12		84		105		59		18		28
Amortization of intangible assets, net^(a)	28		25		—		—		—		—		—		—		—
Amortization of energy contract assets and liabilities^(b)	20		20		—		—		—		—		—		—		—
Nuclear fuel^(c)	529		529		—		—		—		—		—		—		—
ARO accretion^(d)	231		229		—		—		—		—		—		—		—
Total depreciation, amortization and accretion	$	2,591	$	1,415	$	419	$	141	$	239	$	332	$	160	$	79	$	72



																			Successor		Predecessor
	Six Months Ended June 30, 2016																		March 24, 2016 to June 30, 2016		January 1, 2016 to March 23, 2016
	Exelon			Generation			ComEd		PECO		BGE		Pepco		DPL		ACE		PHI		PHI
Depreciation, amortization and accretion
Property, plant and equipment^(a)	$	1,432		$	674		$	345	$	121	$	150	$	85	$	55	$	40	$	111	$	94
Amortization of regulatory assets^(a)	166			—			34		13		56		59		21		41		63		58
Amortization of intangible assets, net^(a)	28			23			—		—		—		—		—		—		—		—
Amortization of energy contract assets and liabilities^(b)	(7		)	(7		)	—		—		—		—		—		—		—		—
Nuclear fuel^(c)	557			557			—		—		—		—		—		—		—		—
ARO accretion^(d)	220			220			—		—		—		—		—		—		—		—
Total depreciation, amortization and accretion	$	2,396		$	1,467		$	379	$	134	$	206	$	144	$	76	$	81	$	174	$	152

________


(a)	Included in Depreciation and amortization on the Registrants' Consolidated Statements of Operations and Comprehensive Income.


(b)	Included in Operating revenues or Purchased power and fuel expense on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.


(c)	Included in Purchased power and fuel expense on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.


(d)	Included in Operating and maintenance expense on the Registrants’ Consolidated Statements of Operations and Comprehensive Income.



	Six Months Ended June 30, 2017
																Successor
	Exelon			Generation			ComEd			PECO			BGE			PHI			Pepco				DPL			ACE
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	$	320		$	113		$	87		$	14		$	31		$	48		$	13			$	6		$	7
Loss from equity method investments	19			19			—			—			—			—			—				—			—
Provision for uncollectible accounts	52			19			15			9			3			6			4				—			2
Stock-based compensation costs	57			—			—			—			—			—			—				—			—
Other decommissioning-related activity^(a)	(144		)	(144		)	—			—			—			—			—				—			—
Energy-related options^(b)	11			11			—			—			—			—			—				—			—
Amortization of regulatory asset related to debt costs	4			—			2			—			—			2			1				1			—
Amortization of rate stabilization deferral	(8		)	—			—			—			7			(15		)	(10		)		(5		)	—
Amortization of debt fair value adjustment	(9		)	(6		)	—			—			—			(3		)	—				—			—
Discrete impacts from EIMA and FEJA^(c)	(51		)	—			(51		)	—			—			—			—				—			—
Amortization of debt costs	49			30			2			1			1			—			—				—			—
Provision for excess and obsolete inventory	51			49			1			—			—			1			—				—			—
Merger-related commitments^(d)	—			—			—			—			—			(8		)	(6		)		(2		)	—
Severance costs	25			17			—			—			—			3			—				—			—
Other	39			13			2			(2		)	(7		)	(6		)	(2		)		(3		)	(2		)
Total other non-cash operating activities	$	415		$	121		$	58		$	22		$	35		$	28		$	—			$	(3	)	$	7
Non-cash investing and financing activities:
Change in capital expenditures not paid	$	(105	)	$	48		$	(82	)	$	(44	)	$	6		$	(8	)	$	—			$	15		$	(14	)
Fair value of pension obligation transferred in connection with the FitzPatrick acquisition	—			49			—			—			—			—			—				—			—
Change in PPE related to ARO update	103			103			—			—			—			—			—				—			—
Indemnification of like-kind exchange position^(g)	—			—			23			—			—			—			—				—			—
Non-cash financing of capital projects	13			13			—			—			—			—			—				—			—
Dividends on stock compensation	3			—			—			—			—			—			—			—	—			—
Loss on reissuance of treasury stock	1,054			—			—			—			—			—			—				—			—



																									Successor			Predecessor
	Six Months Ended June 30, 2016																								March 24, 2016 to June 30, 2016			January 1, 2016 to March 23, 2016
	Exelon			Generation			ComEd			PECO			BGE			Pepco			DPL			ACE			PHI			PHI
Other non-cash operating activities:
Pension and non-pension postretirement benefit costs	$	297		$	109		$	83		$	17		$	33		$	16		$	9		$	8		$	31		$	23
Loss from equity method investments	10			11			—			—			—			—			—			—			—			—
Provision for uncollectible accounts	51			13			18			10			3			8			8			10			7			16
Stock-based compensation costs	67			—			—			—			—			—			—			—			—			3
Other decommissioning-related activity^(a)	(123		)	(123		)	—			—			—			—			—			—			—			—
Energy-related options^(b)	(17		)	(17		)	—			—			—			—			—			—			—			—
Amortization of regulatory asset related to debt costs	4			—			2			1			—			1			—			—			1			1
Amortization of rate stabilization deferral	34			—			—			—			34			(2		)	2			—			—			5
Amortization of debt fair value adjustment	(6		)	(6		)	—			—			—			—			—			—			—			—
Discrete impacts from EIMA ^(c)	(21		)	—			(21		)	—			—			—			—			—			—			—
Amortization of debt costs	14			10			2			1			2			—			—			—			—			—
Provision for excess and obsolete inventory	68			66			2			—			—			1			1			1			—			1
Merger-related commitments ^(d)(e)	503			3			—			—			—			138			100			120			358			—
Severance costs	122			50			—			—			—			—			—			—			54			—
Asset retirement costs	—			—			—			—			—			—			4			2			—			—
Lower of cost or net realizable value inventory adjustment	36			36			—			—			—			—			—			—			—			—
Other	17			17			(3		)	(2		)	(12		)	(4		)	(3		)	(3		)	(7		)	(3		)
Total other non-cash operating activities	$	1,056		$	169		$	83		$	27		$	60		$	158		$	121		$	138		$	444		$	46
Non-cash investing and financing activities:
Change in capital expenditures not paid	$	(364	)	$	(317	)	$	(21	)	$	(12	)	$	2		$	11		$	(9	)	$	6		$	(4	)	$	11
Fair value of net assets contributed to Generation in connection with the PHI Merger, net of cash^(d)(f)	—			119			—			—			—			—			—			—			—			—
Fair value of net assets distributed to Exelon in connection with the PHI Merger, net of cash^(d)(f)	—			—			—			—			—			—			—			—			127			—
Fair value of pension obligation transferred in connection with the PHI Merger	—			—			—			—			—			—			—			—			53			—
Assumption of member purchase liability	—			—			—			—			—			—			—			—			29			—
Assumption of merger commitment liability	—			—			—			—			—			33			—			—			33			—
Change in PPE related to ARO update	471			471			—			—			—			—			—			—			—			—
Indemnification of like-kind exchange position^(g)	—			—			5			—			—			—			—			—			—			—
Non-cash financing of capital projects	60			60			—			—			—			—			—			—			—			—
Dividends on stock compensation	2			—			—			—			—			—			—			—			—			—

________

(a)

Includes the elimination of NDT fund activity for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 16 - Asset Retirement Obligations of the Exelon 2016 Form 10-K for additional information regarding the accounting for nuclear decommissioning.


(b)	Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded in Operating revenues.

(c)

Reflects the change in distribution rates pursuant to EIMA and FEJA, which allows for the recovery of distribution costs by a utility through a pre-established performance-based formula rate tariff. Beginning June 1, 2017, also reflects the change in energy efficiency rates pursuant to FEJA, which allows for the recovery of energy efficiency costs by a utility through a pre-established performance-based formula rate tariff. See Note 5 — Regulatory Matters for more information.


(d)	See Note 4 — Mergers, Acquisitions and Dispositions for additional information related to the merger with PHI.


(e)	Excludes $5 million of forgiveness of Accounts receivable related to merger commitments recorded in connection with the PHI Merger, the balance is included within Provision for uncollectible accounts.


(f)	Immediately following closing of the PHI Merger, the net assets associated with PHI's unregulated business interests were distributed by PHI to Exelon. Exelon contributed a portion of such net assets to Generation.


(g)	See Note 11— Income Taxes for discussion of the like-kind exchange tax position.

Supplemental Balance Sheet Information

The following tables provide additional information about assets and liabilities of the Registrants as of June 30, 2017 and December 31, 2016.



													Successor
June 30, 2017	Exelon			Generation			ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Property, plant and equipment:
Accumulated depreciation and amortization	$	19,735	^(a)	$	10,550	^(a)	$	4,122	$	3,330	$	3,358	$	360	$	3,131	$	1,212	$	1,042
Accounts receivable:
Allowance for uncollectible accounts	$	322		$	102		$	71	$	59	$	26	$	64	$	25	$	19	$	20



													Successor
December 31, 2016	Exelon			Generation			ComEd		PECO		BGE		PHI		Pepco		DPL		ACE
Property, plant and equipment:
Accumulated depreciation and amortization	$	19,169	^(b)	$	10,562	^(b)	$	3,937	$	3,253	$	3,254	$	195	$	3,050	$	1,175	$	1,016
Accounts receivable:
Allowance for uncollectible accounts	$	334		$	91		$	70	$	61	$	32	$	80	$	29	$	24	$	27

_______


(a)	Includes accumulated amortization of nuclear fuel in the reactor core of $3,016 million.


(b)	Includes accumulated amortization of nuclear fuel in the reactor core of $3,186 million.

PECO Installment Plan Receivables (Exelon and PECO)

PECO enters into payment agreements with certain delinquent customers, primarily residential, seeking to restore their service, as required by the PAPUC. Customers with past due balances that meet certain income criteria are provided the option to enter into an installment payment plan, some of which have terms greater than one year, to repay past due balances in addition to paying for their ongoing service on a current basis. The receivable balance for these payment agreement receivables is recorded in accounts receivable for the current portion and other deferred debits and other assets for the noncurrent portion. The net receivable balance for installment plans with terms greater than one year was $11 million and $9 million as of June 30, 2017 and December 31, 2016, respectively. The allowance for uncollectible accounts reserve methodology and assessment of the credit quality of the installment plan receivables are consistent with the customer accounts receivable methodology discussed in Note 1 — Significant Accounting Policies of the Exelon 2016 Form 10-K. The allowance for uncollectible accounts balance associated with these receivables at June 30, 2017 of $13 million consists of $1 million, $3 million and $9 million for low risk, medium risk and high risk segments, respectively. The allowance for uncollectible accounts balance at December 31, 2016 of $13 million consists of $1 million, $3 million and $9 million for low risk, medium risk and high risk segments, respectively. The balance of the payment agreement is billed to the customer in equal monthly installments over the term of the agreement. Installment receivables outstanding as of June 30, 2017 and December 31, 2016 include balances not yet presented on the customer bill, accounts currently billed and an immaterial amount of past due receivables. When a customer defaults on its payment agreement, the terms of which are defined by plan type, the entire balance of the agreement becomes due and the balance is reclassified to current customer accounts receivable and reserved for in accordance with the methodology discussed in Note 1 — Significant Accounting Policies of the Exelon 2016 Form 10-K.