PAA Natural Gas Storage L.P. (PNG) (NYSE:PNG) operates and manages natural gas storage facilities. The company has doubled its storage facilities since 2005, having 40 Bcf as of 31 December 2009. It plans to increase total capacity by 70% to reach a total of 68 Bcf. The company sells its space to customers for a fee. 
The company has a contractual relationship with its customers. If there was increased competition in the space or expenses and costs rose, the company would have less cash flow. It faces the risk of not being able to pay the minimum distribution to common shareholders, general partner, and Series A shareholders. 
The company's initial public offering of stock filed on the NYSE exchange on 25 January 2010. The proposed offer price range is $20.00-$20.00. The company is offering 10 million shares and raising $200 million. 
In FY2009 with year ended 31 December 2009, the company reported $72.2 million in total revenue, up 46.7% from $49.2 million in total revenue for FY2008. Furthermore, the company had $24.0 million in net income for FY2009, up 22.4% from $19.6 million in net income for FY2008.