ONEOK's Energy Services operation creates value by providing premium services to our customers by delivering physical and risk management products and services through our networks of contracted gas supply and leased transportation and storage assets throughout the U.S. and into Canada. We offer premium, no-notice services to our customers, which are primarily local distribution companies. Energy Services derives a majority of its earnings from the physical natural gas marketing business. Energy Services’ retail business participates in customer gas choice programs in Nebraska and Wyoming.

Leased Assets

• 83 Bcf of storage capacity
• 2.2 Bcf/d of storage withdrawal rights
• 1.4 Bcf/d of storage injection rights
• 1.5 Bcf/d of long-term transportation capacity

Results (For The Year Ended Dec. 31)	2008	2007	2006
Revenues ($Millions)	$ 7,585.8	$ 6,629.4	$ 6,335.8
Net margin ($Millions)	$ 110.7	$ 247.4	$ 273.8
Operating Income ($Millions)	$ 75.7	$ 205.4	$ 229.2
Natural gas marketed (Bcf)	1,160	1,191	1,132