CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating revenue:
Electric	$ 470,511	$ 487,721	$ 1,082,038	$ 1,087,454
Gas	207,823	245,014	643,789	663,638
Other	283	(60)	1,302	1,176
Total operating revenue	678,617	732,675	1,727,129	1,752,268
Energy costs:
Purchased electricity	156,098	180,022	355,213	407,918
Electric generation fuel	19,861	25,886	89,798	71,109
Residential exchange	(15,302)	(15,293)	(38,637)	(36,975)
Purchased gas	96,462	127,174	329,981	363,928
Unrealized (gain) loss on derivative instruments, net	(64,076)	(16,995)	(59,350)	(50,113)
Utility operations and maintenance	128,195	123,852	256,241	241,820
Non-utility expense and other	(74)	2,022	787	4,941
Depreciation	84,552	73,579	163,558	148,361
Amortization	11,547	18,450	24,890	36,423
Conservation amortization	28,518	23,871	62,921	56,084
Taxes other than income taxes	72,960	75,414	172,830	175,935
Total operating expenses	518,741	617,982	1,358,232	1,419,431
Operating income	159,876	114,693	368,897	332,837
Other income (deductions):
Other income	18,337	15,679	33,273	28,218
Other expense	(1,947)	(1,278)	(5,700)	(2,233)
Non-hedged interest rate derivative expense	(7,297)	(25,412)	(6,770)	(25,460)
Interest charges:
AFUDC	4,687	7,597	11,982	12,001
Interest expense	(95,964)	(108,961)	(203,165)	(190,009)
Income (loss) before income taxes	77,692	2,318	198,517	155,354
Income tax (benefit) expense	20,000	(2,717)	52,346	42,888
Net income (loss)	57,692	5,035	146,171	112,466
PUGET SOUND ENERGY, INC. [Member]
Operating revenue:
Electric	470,511	487,721	1,082,038	1,087,454
Gas	207,823	245,014	643,789	663,638
Other	283	629	1,302	1,865
Total operating revenue	678,617	733,364	1,727,129	1,752,957
Energy costs:
Purchased electricity	156,098	180,166	355,213	408,207
Electric generation fuel	19,861	25,886	89,798	71,109
Residential exchange	(15,302)	(15,293)	(38,637)	(36,975)
Purchased gas	96,462	127,174	329,981	363,928
Unrealized (gain) loss on derivative instruments, net	(59,850)	(9,648)	(49,715)	(15,632)
Utility operations and maintenance	128,195	123,852	256,241	241,820
Non-utility expense and other	2,270	2,533	5,500	5,880
Depreciation	84,552	73,579	163,558	148,361
Amortization	11,547	18,450	24,890	36,423
Conservation amortization	28,518	23,871	62,921	56,084
Taxes other than income taxes	72,960	75,414	172,830	175,935
Total operating expenses	525,311	625,984	1,372,580	1,455,140
Operating income	153,306	107,380	354,549	297,817
Other income (deductions):
Other income	18,329	15,677	33,262	28,211
Other expense	(1,947)	(1,278)	(5,700)	(2,233)
Interest charges:
AFUDC	4,687	7,597	11,982	12,001
Interest expense	(62,333)	(57,812)	(123,071)	(114,417)
Interest expense on parent note	(83)	(30)	(133)	(95)
Income (loss) before income taxes	111,959	71,534	270,889	221,284
Income tax (benefit) expense	31,087	20,621	77,301	66,932
Net income (loss)	$ 80,872	$ 50,913	$ 193,588	$ 154,352