REGULATORY ASSETS AND LIABILITIES

6 Months Ended

Jun. 30, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

The following regulatory assets and liabilities were reflected on our balance sheets at June 30, 2021 and December 31, 2020. For more information on our regulatory assets and liabilities, see Note 6, Regulatory Assets and Liabilities, in our 2020 Annual Report on Form 10-K.


(in millions)	June 30, 2021		December 31, 2020
Regulatory assets
Pension and OPEB costs	$	151.4	$	161.4
Environmental remediation costs	114.0		116.1
Plant retirements	54.7		58.5
Income tax related items	51.9		46.7
ReACT™	16.9		18.2
Asset retirement obligations	13.8		13.1
Uncollectible expense	7.7		12.5
Forward Wind Energy Center	6.6		10.3
Other, net	7.3		12.6
Total regulatory assets	$	424.3	$	449.4


(in millions)	June 30, 2021		December 31, 2020
Regulatory liabilities
Income tax related items	$	374.2	$	397.0
Removal costs	194.7		193.7
Pension and OPEB benefits	114.7		115.9
Earnings sharing mechanism	28.2		36.8
Electric transmission costs	17.0		16.8
Derivatives	15.5		3.1
Energy costs refundable through rate adjustments	8.8		9.7
Other, net	1.4		3.2
Total regulatory liabilities	$	754.5	$	776.2

Balance sheet presentation
Other current liabilities	$	2.7	$	3.6
Regulatory liabilities	751.8		772.6
Total regulatory liabilities	$	754.5	$	776.2