Franchises and Significant Customers Franchises and Significant Customers (Tables)

12 Months Ended

Dec. 31, 2011

Franchises and Significant Customers [Abstract]

Schedule of Franchise Fee Agreements

The franchise agreements held between the Company and the cities of El Paso and Las Cruces are detailed below:

City	Period	Franchise Fee	(a)
El Paso	July 1, 2005 - August 1, 2010	3.25%
El Paso	August 1, 2010 - Present	4.00%	(b)
Las Cruces	February 1, 2000 - Present	2.00%

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(a) Based on a percentage of revenue.

(b) The additional fee of 0.75% is to be placed in a restricted fund to be used solely for economic development and renewable energy purposes.