PEOPLES GAS SYSTEM
GAS OPERATING STATISTICS (Unaudited)
	Operating Revenues*						Therms*
Three Months Ended March 31, 2001					Percent						Percent
	2001		2000		Change		2001		2000		Change
By Customer Segment:
Residential	$ 41,800		$ 25,420		64.4		27,483		23,887		15.1
Commercial	67,480		38,346		76.0		90,810		84,337		7.7
Industrial	3,938		3,517		12.0		62,019		80,060		(22.5)
Off System Sales	4,389		9,191		(52.2)		6,619		30,235		(78.1)
Power generation	2,885		2,517		14.6		78,028		102,434		(23.8)
Other revenues	13,644		7,626		78.9		-		-		--
	$ 134,136		$ 86,617		54.9		264,959		320,953		(17.4)
By Sales Type:
System supply	$ 105,044		$ 66,064		59.0		82,026		103,896		(21.0)
Transportation	15,448		12,927		19.5		182,933		217,057		(15.7)
Other revenues	13,644		7,626		78.9		--		--		--
	$ 134,136		$ 86,617		54.9		264,959		320,953		(17.4)
Average customers	266,278		255,612		4.2		--		--		--
	Operating Revenues*						Therms*
Twelve Months Ended December 31,					Percent						Percent
	2001		2000		Change		2001		2000		Change
By Customer Segment:
Residential	$ 89,612		$ 65,419		37.0		61,228		55,943		9.4
Commercial	174,965		127,023		37.7		298,550		283,461		5.3
Industrial	13,324		12,597		5.8		260,329		276,807		(6.0)
Off System Sales	33,960		24,907		36.3		72,160		86,050		(16.1)
Power generation	11,080		10,461		5.9		394,177		421,250		(6.4)
Other revenues	39,037		26,808		45.6		--				--
	$ 361,978		$ 267,215		35.5		1,086,444		1,123,511		(3.3)
By Sales Type:
System supply	$ 271,754		$ 196,347		38.4		298,731		317,679		(6.0)
Transportation	51,187		44,060		16.2		787,713		805,832		(2.2)
Other revenues	39,037		26,808		45.6		--		--		--
	$ 361,978		$ 267,215		35.5		1,086,444		1,123,511		(3.3)
Average customers	258,889		248,739		4.1		--		--		--
* in thousands