Balance Sheet (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current Assets:
Cash	$ 0	$ 0
Receivables:
Other	1,242	1,485
Materials and supplies, at average cost	7,801	7,759
Exchange gas receivables	2,841	3,165
Regulatory assets	2,111	2,054
Other	2,359	1,801
Total current assets	224,552	214,495
Property, plant and equipment	3,993,717	3,974,900
Less-Accumulated depreciation and amortization	2,038,518	2,026,007
Total property, plant and equipment, net	1,955,199	1,948,893
Other Long-Term Assets:
Regulatory assets	36,475	35,796
Right-of-use assets	8,775	8,725
Deferred charges and other	20,454	19,450
Total long-term other assets	65,704	63,971
Total assets	2,245,455	2,227,359
Payables:
Trade	38,968	47,822
Accrued liabilities:
Exchange gas payables	1,950	5,553
Regulatory liabilities	20,358	21,374
Taxes, other than income taxes	10,442	7,388
Interest	12,019	5,505
Customer advances	7,074	5,016
Other	16,282	10,588
Total current liabilities	116,958	116,026
Long-Term Debt	581,459	581,178
Other Long-Term Liabilities:
Regulatory liabilities	247,487	252,272
Asset retirement obligations	138,115	136,263
Lease liability	7,266	7,193
Other	879	1,231
Total other long-term liabilities	393,747	396,959
Contingent Liabilities and Commitments (Note 4)
Member’s Equity:
Member’s capital	1,073,892	1,073,892
Retained earnings	79,399	59,304
Total member’s equity	1,153,291	1,133,196
Total liabilities and member’s equity	2,245,455	2,227,359
Related Party [Member]
Receivables:
Advances to affiliate	169,050	157,776
Trade	788	1,375
Affiliates	788	1,375
Payables:
Affiliates	9,865	12,780
Nonrelated Party [Member]
Receivables:
Trade	38,360	39,080
Affiliates	$ 38,360	$ 39,080