CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Construction work in progress	$ 1,049,342	$ 628,387
Current assets
Allowance for doubtful accounts	(8,136)	(9,784)
Common shareholder's equity:
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	1,000
Common stock, shares outstanding (in shares)	200
Puget Sound Energy Inc.
ASSETS
Construction work in progress	1,049,342	628,387
Current assets
Allowance for doubtful accounts	$ (8,136)	$ (9,784)
Common shareholder's equity:
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	150,000,000
Common stock, shares outstanding (in shares)	85,903,791