Property, Plant and Equipment

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

Depreciable property, plant, and equipment at March 31, 2023 and December 31, 2022 consist of the following (in thousands):

	March 31, 2023	December 31, 2022
Equipment	56,720	55,178
Office buildings and other structures	54,999	54,647
Transmission and distribution plant	257,332	234,218
Total property, plant, and equipment	369,051	344,043

Depreciation of property, plant and equipment is computed based on the estimated useful lives as follows:

	Useful Lives
Equipment	3 to 30 years
Office buildings and other structures	30 years
Transmission and distribution plant	10 to 50 years