Regulatory Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Regulatory Assets and Liabilities

The following table presents DPL’s Regulatory assets and liabilities:

	Type of Recovery	Amortization Through	December 31,
$ in millions			2017		2016
Regulatory assets, current:
Undercollections to be collected through rate riders	A/B	2018	$	23.9	$	0.1
Total regulatory assets, current			23.9		0.1
Regulatory assets, non-current:
Pension benefits	B	Ongoing	92.4		97.6
Deferred recoverable income taxes	B/C	Ongoing	—		35.9
Unrecovered OVEC charges	D	Undetermined	27.8		21.0
Fuel costs	B	2020	9.3		15.4
Regulatory compliance costs	B	2020	9.2		12.4
Rate case costs	B	Undetermined	8.1		6.3
Smart grid and AMI costs	B	Undetermined	7.3		7.3
Unamortized loss on reacquired debt	B	Various	7.0		8.0
Deferred storm costs	A	Undetermined	2.1		—
Total regulatory assets, non-current			163.2		203.9
Total regulatory assets			$	187.1	$	204.0
Regulatory liabilities, current:
Overcollection of costs to be refunded through rate riders	A/B	2018	$	14.8	$	33.7
Total regulatory liabilities, current			14.8		33.7
Regulatory liabilities, non-current:
Estimated costs of removal - regulated property		Not Applicable	132.8		126.5
Deferred income taxes payable through rates		Various	83.4		—
Postretirement benefits	B	Ongoing	5.0		3.9
Total regulatory liabilities, non-current			221.2		130.4
Total regulatory liabilities			$	236.0	$	164.1

A – Recovery of incurred costs plus rate of return.

B – Recovery of incurred costs without a rate of return.

C – Balance has an offsetting liability resulting in no effect on rate base.

D – Recovery not yet determined, but recovery is probable of occurring in future rate proceedings.

THE DAYTON POWER AND LIGHT COMPANY [Member]

Schedule of Regulatory Assets and Liabilities

The following table presents DP&L’s Regulatory assets and liabilities:

	Type of Recovery	Amortization Through	December 31,
$ in millions			2017		2016
Regulatory assets, current:
Undercollections to be collected through rate riders	A/B	2018	$	23.9	$	0.1
Total regulatory assets, current			23.9		0.1
Regulatory assets, non-current:
Pension benefits	B	Ongoing	92.4		97.6
Deferred recoverable income taxes	B/C	Ongoing	—		35.9
Unrecovered OVEC charges	D	Undetermined	27.8		21.0
Fuel costs	B	2020	9.3		15.4
Regulatory compliance costs	B	2020	9.2		12.4
Rate case costs	B	Undetermined	8.1		6.3
Smart grid and AMI costs	B	Undetermined	7.3		7.3
Unamortized loss on reacquired debt	B	Various	7.0		8.0
Deferred storm costs	A	Undetermined	2.1		—
Total regulatory assets, non-current			163.2		203.9
Total regulatory assets			$	187.1	$	204.0
Regulatory liabilities, current:
Overcollection of costs to be refunded through rate riders	A/B	2018	$	14.8	$	33.7
Total regulatory liabilities, current			14.8		33.7
Regulatory liabilities, non-current:
Estimated costs of removal - regulated property		Not Applicable	132.8		126.5
Deferred income taxes payable through rates		Various	83.4		—
Postretirement benefits	B	Ongoing	5.0		3.9
Total regulatory liabilities, non-current			221.2		130.4
Total regulatory liabilities			$	236.0	$	164.1

A – Recovery of incurred costs plus rate of return.

B – Recovery of incurred costs without a rate of return.

C – Balance has an offsetting liability resulting in no effect on rate base.

D – Recovery not yet determined, but recovery is probable of occurring in future rate proceedings.