Macquarie Infrastructure Company to Release Third Quarter 2009 Financial Results

Macquarie Infrastructure Company (NYSE: MIC) announced that it will release its financial results for the third quarter of 2009 before the opening of market trading on Thursday, November 5^th, 2009. The Company has scheduled a conference call for 11:00 a.m. Eastern Time that day during which it will review and comment on the results.

To listen to the conference call please dial +1(888) 490-2763 (domestic) or +1(719) 457-2626 (international) at least 10 minutes prior to the scheduled start time. Interested parties can also listen to a live webcast of the call. The webcast will be accessible via the Company’s website at www.macquarie.com/mic. Please allow extra time prior to the call to visit the site and download the necessary software to listen to the webcast.

The Company will prepare materials in support of its conference call presentation. The materials will be available for downloading from the Company website the morning of November 5^th, 2009 prior to the conference call. A link to the materials will be located on the homepage of the MIC website.

For interested individuals unable to participate in the live conference call, a replay will be available after 2:00 p.m. on November 5^th, 2009 through midnight November 19^th, 2009, at +1(888) 203-1112 (domestic) or +1(719) 457-0820 (international), Passcode: 7642770. An online archive of the webcast will be available on the Company’s website for one year following the call.

ABOUT MACQUARIE INFRASTRUCTURE COMPANY

Macquarie Infrastructure Company owns, operates and invests in a diversified group of infrastructure businesses providing basic, everyday services, to customers in the United States. Its ongoing businesses consist of three energy-related businesses including a 50% indirect interest in a bulk liquid storage terminal business (International-Matex Tank Terminals), a gas production and distribution business (The Gas Company in Hawaii) and a district energy business (Thermal Chicago) as well as an aviation-related airport services business (Atlantic Aviation). The Company is externally managed by a member of the Macquarie Group. For additional information, please visit the Macquarie Infrastructure Company website at www.macquarie.com/mic. MIC-G

“Macquarie Group” refers to the Macquarie Group of companies, which comprises Macquarie Group Limited and its worldwide subsidiaries and affiliates. Macquarie Infrastructure Company LLC is not an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia) and its obligations do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of Macquarie Infrastructure Company LLC. MIC-G