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Copano Energy Announces First Quarter 2012 Earnings Release and Conference Call Schedule

May 9, 2012

Copano Energy, L.L.C. (NASDAQ: CPNO) today announced plans to release its first quarter 2012 financial results on Wednesday, May 9, after the market closes. In conjunction with the release, Copano Energy has scheduled a conference call that will be broadcast live over the Internet on Thursday, May 10, at 10:00 a.m. Eastern Time (9:00 a.m. Central Time). Investors may participate in the call either by phone or audio webcast.

By Phone:   Dial 480-629-9835 at least 10 minutes before the call. A telephone replay will be 
            available through May 17 by dialing 303-590-3030 and using the access code 4531955#.

By Webcast: Visit the Investor Relations page of Copano's website at www.copano.com. Log on 
            at least 10 minutes in advance to register and download any necessary software. 
            A replay will be available shortly after the call.

About Copano Energy, L.L.C.

Copano Energy, L.L.C. (NASDAQ: CPNO) is a midstream natural gas company with operations in Texas, Oklahoma, Wyoming and Louisiana. Its assets include approximately 6,700 miles of active natural gas gathering and transmission pipelines, 370 miles of NGL pipelines and 10 natural gas processing plants, with more than 1 billion cubic feet per day of combined processing capacity and 44,000 barrels per day of fractionation capacity. More information is available at http://www.copano.com.

CPNO-IR

Contact:

Carl Luna, Senior VP & CFO
Copano Energy, L.L.C.
713-621-9547
or
Jack Lascar / jlascar@drg-l.com
Anne Pearson / apearson@drg-l.com
DRG&L / 713-529-6600