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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
The following is a summary of DPL’s Property, plant and equipment with corresponding composite depreciation rates at December 31, 2024 and 2023:
December 31, 2024December 31, 2023
$ in millionsComposite RateComposite Rate
Regulated:
Transmission$759.9 2.0%$505.3 2.5%
Distribution2,044.7 3.3%1,860.9 3.5%
General20.0 5.6%19.3 5.9%
Non-depreciable112.0 N/A99.5 N/A
Total regulated2,936.6 2,485.0 
Unregulated:
Other35.6 3.5%31.3 4.1%
Non-depreciable5.4 N/A5.6 N/A
Total unregulated41.0 36.9 
Total property, plant and equipment in service2,977.6 2.9%2,521.9 3.2%
Less: accumulated depreciation
(571.7)(535.1)
2,405.9 1,986.8 
Construction work in process165.5 234.2 
Property, plant and equipment, net
$2,571.4 $2,221.0 
THE DAYTON POWER AND LIGHT COMPANY [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
The following is a summary of AES Ohio’s Property, plant and equipment with corresponding composite depreciation rates at December 31, 2024 and 2023:
December 31, 2024December 31, 2023
$ in millionsComposite RateComposite Rate
Regulated:
Transmission$899.1 1.7%$648.0 2.0%
Distribution2,453.9 2.8%2,283.4 2.9%
General32.3 3.4%32.2 3.5%
Non-depreciable112.0 N/A99.6 N/A
Total property, plant and equipment in service$3,497.3 2.4%$3,063.2 2.6%
Less: accumulated depreciation
(1,115.5)(1,098.1)
2,381.8 1,965.1 
Construction work in process164.4 230.8 
Property, plant and equipment, net
$2,546.2 $2,195.9