Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash	$ 0	$ 0
Receivables:
Trade	40,066	42,143
Affiliated companies	109	18
Advances to affiliate	201,265	180,400
Other	1,962	970
Materials and supplies	9,683	10,046
Exchange gas due from others	5,534	4,581
Prepayments and other	3,346	8,591
Total current assets	261,965	246,749
PROPERTY, PLANT AND EQUIPMENT, at cost	3,593,186	3,457,982
Less-Accumulated depreciation	1,673,315	1,596,369
Total property, plant and equipment, net	1,919,871	1,861,613
OTHER ASSETS:
Deferred charges	1,075	1,277
Regulatory assets	21,935	23,992
Right-of-use assets	18,101	0
Total other assets	41,111	25,269
Total assets	2,222,947	2,133,631
Payables:
Trade	15,635	12,839
Affiliated companies	9,172	26,532
Accrued liabilities:
Taxes, other than income taxes	9,913	11,496
Interest	5,505	5,505
Exchange gas due to others	4,468	11,660
Customer advances	4,109	788
Other	6,990	7,386
Total current liabilities	55,792	76,206
LONG-TERM DEBT	577,045	576,168
OTHER NONCURRENT LIABILITIES:
Asset retirement obligations	91,251	69,350
Regulatory liabilities	323,032	290,430
Lease liability	16,823	0
Other	5,695	835
Total other noncurrent liabilities	436,801	360,615
MEMBER'S EQUITY:
Member's capital	1,073,892	1,073,892
Retained earnings	79,417	46,750
Total member's equity	1,153,309	1,120,642
Total liabilities and member's equity	$ 2,222,947	$ 2,133,631