Exhibit 99.1

Macquarie Infrastructure Company LLC Reports Third Quarter 2011 Financial Results, Declares $0.20 Quarterly Dividend

• Operating businesses performing ahead of guidance

• Proportionately combined free cash flow of $0.79 per share generated

• Atlantic Aviation expected to exit cash flow sweep by year-end

• Cash dividend of $0.20 per share to be paid mid-November

NEW YORK--(BUSINESS WIRE)--November 2, 2011--Macquarie Infrastructure Company LLC (NYSE: MIC) reported consolidated revenue of $251.6 million for the third quarter of 2011, a 17.9% increase compared with the third quarter in 2010.

The Company reported net income from continuing operations, before tax, of $14.6 million for the third quarter of 2011 compared with $11.0 million for the third quarter of 2010. For the nine months ended September 30, 2011 MIC reported net income before tax of $28.1 million compared with a net loss of $8.6 million for the comparable period in 2010.

The MIC Board has approved a cash dividend of $0.20 per share for the quarter ended September 30, 2011. The dividend will be payable on November 17, 2011 to shareholders of record on November 14, 2011.

“We are on pace to achieve year-on-year growth in proportionately combined free cash flow from core operations of more than 12%,” said James Hooke, Chief Executive Officer of Macquarie Infrastructure Company LLC. “The performance of our operating companies in the third quarter was in line with our expectations and produced proportionately combined free cash flow through nine months that is ahead of our guidance.”

Cash Generation

Proportionately combined free cash flow generated in the third quarter of 2011 was $36.4 million, or $0.79 per share, compared with $43.0 million, or $0.94 per share, in the third quarter of 2010. The decrease reflects the contribution in 2010 from a unit of MIC’s bulk liquid storage terminal business that was involved in the Gulf of Mexico oil spill clean-up. Excluding the contribution from this unit, proportionately combined free cash flow would have increased by approximately 12.9%.

MIC regards free cash flow as an important tool in assessing the performance of its capital intensive, cash generative businesses. MIC defines free cash flow as cash from operating activities, less maintenance capital expenditures and changes in working capital.

The following table reflects results of continuing operations for MIC’s businesses for the quarter and year to date periods ended September 30, 2011 and 2010 on a proportionately combined basis. Proportionately combined free cash flow includes the cash generated at MIC’s wholly-owned subsidiaries as well as its 50% interest in the free cash flow generated by IMTT and 50.01% controlling interest in the free cash flow generated by District Energy, all offset by MIC corporate level expenses.

Proportionately combined free cash flow does not fully reflect MIC’s ability to freely deploy generated cash, as it does not reflect required principal payments on indebtedness and other fixed obligations, or dividends, among other items. Free cash flow, as defined by MIC, should be used as a supplemental measure and not in lieu of financial results reported under GAAP. See the attached tables for a reconciliation of consolidated net income attributable to MIC LLC to consolidated EBITDA excluding non-cash items and cash from operating activities to free cash flow.

Maintenance capital expenditures incurred during the first nine months of 2011 increased to $30.2 million compared with $21.0 million for the comparable period in 2010. As the Company has previously noted, these expenditures were accelerated in order to take advantage of the 100% tax depreciation of capital projects provided for under the Tax Relief, Unemployment Insurance Reauthorization and Job Creation Act of 2010.

IMTT

MIC has a 50% equity interest in International-Matex Tank Terminals (IMTT), the operator of one of the largest independent bulk liquid storage terminal businesses in the US. IMTT owns and operates 10 marine storage terminals in the US and is the part owner and operator of two terminals in Canada. The terminals store and handle a wide variety of petroleum grades, chemicals and vegetable and animal oils. To aid in meaningful analysis of the performance of IMTT across periods, the table and discussion below refers to results for 100% of the business, not MIC’s 50% interest.

For the third quarter of 2011 compared with the third quarter of 2010:

• Terminal revenue increased 11.9%
• Average storage rental rates increased 13.6%; full-year average storage rental rates are expected to increase by approximately 13.0%
• Capacity utilization increased to 94.1% from 93.0%; utilization rates for the full-year are expected to be approximately 94%
• Terminal operating costs increased 9.4%; the increase reflects higher repairs and maintenance, labor and benefits costs
• The 85.8% decline in environmental response gross profit reflects a reduced level of oil spill clean-up activity; a unit of the business was active in the clean-up of the BP oil spill along the Gulf Coast in 2010

IMTT’s free cash flow for the third quarter declined to $24.2 million in 2011 from $44.5 million in 2010 primarily as a result of the reduced contribution from the environmental response unit and an increase in maintenance capital expenditures and repairs and maintenance expenses. The decline was partially offset by increased terminal gross profit.

MIC has been unable to resolve a previously-disclosed dispute with the co-owner of IMTT regarding distributions, despite efforts to do so in accordance with a Shareholders’ Agreement between the parties. Accordingly, on April 18, 2011, MIC initiated formal arbitration proceedings with the Voting Trust of IMTT Holdings Inc. (“Voting Trust”) and IMTT Holdings Inc. under the auspices of the American Arbitration Association, as provided under the Shareholders’ Agreement. MIC believes the Voting Trust’s defenses and claims in the arbitration are without merit. The arbitration process is expected to be completed in the first quarter of 2012.

Assuming the arbitration is resolved in its favor, and subject to favorable economic conditions, the Company intends to increase the cash dividend paid to shareholders by approximately $0.70 per share, per year. Any increase further assumes the continued stable performance of MIC’s operating businesses and remains subject to authorization by the MIC board.

The Gas Company

The Gas Company is the owner and operator of the only regulated (“utility”) gas manufacturing and pipeline distribution network on the islands of Hawaii. The business is also the owner and operator of the largest unregulated (“non-utility”) gas distribution operation on the islands.

For the third quarter of 2011 compared with the third quarter of 2010:

• Utility contribution margin increased 2.3% to $9.5 million from $9.3 million
• Non-utility contribution margin increased 8.1% to $13.0 million from $12.0 million
• The combined volume of gas products sold increased 2.4%

The Gas Company generated $6.9 million of free cash flow in the third quarter of 2011. Free cash flow declined 25.7% versus the comparable period in 2010 primarily as a result of a higher provision for income taxes and expected increases in maintenance capital expenditures partially offset by improved operating results. The Gas Company is a member of MIC’s consolidated tax group and the increased federal income tax liability is expected to be wholly offset by net operating loss carryforwards at the MIC level.

District Energy

MIC’s District Energy business produces chilled water that it distributes via underground pipelines in downtown Chicago to high-rise buildings for use in air conditioning and process cooling systems. The business also operates a site-specific unit that supplies both cooling and heating services to three customers in Las Vegas, Nevada. To aid in meaningful analysis of the performance of District Energy across periods, the table and discussion below refers to results for 100% of the business, not MIC’s 50.01% (controlling) interest.

For the third quarter of 2011 compared with the third quarter of 2010:

• Cooling consumption revenue decreased 11.9% to $11.1 million from $12.6 million; lower average temperatures in Chicago in the second and third quarters of 2011 compared with 2010 reduced demand for cooling
• Capacity revenue increased 4.2% to $5.5 million from $5.3 million on an increase in the number of customers being served and inflation adjustments

Free cash flow from District Energy decreased 19.1% to $5.8 million in the third quarter of 2011 compared with the third quarter of 2010. The decrease reflects primarily a higher provision for income taxes.

Atlantic Aviation

Atlantic Aviation owns and operates a network of fixed-base operations (FBOs) that primarily provide fuel, terminal services and aircraft hangar services to owners and operators of general aviation (GA) aircraft at 66 airports in the US. The network is the largest of its type in the US air transportation industry.

During the third quarter of 2011 Atlantic Aviation completed the acquisitions of FBOs in Portland and Eugene, Oregon. The acquisitions were funded using proceeds from the sale of smaller, non-core FBOs earlier in the year. In addition to expanding Atlantic Aviation’s network into the Pacific Northwest, the acquisitions are expected to produce a net increase in EBITDA generated by the business.

For the third quarter of 2011 compared with the third quarter of 2010:

• General aviation flight movement, as reported by the FAA, increased 0.7%
• On a same store basis, gross profit increased 5.2%
• On a same store basis, the volume of GA fuel sold increased 5.4% and weighted average GA fuel margins increased 0.6%
• Selling, general and administrative (SG&A) expenses were flat
• Atlantic Aviation’s leverage ratio decreased to 6.22 times adjusted EBITDA (trailing) including year to date principal payments of $34.5 million
• Since 2009, Atlantic Aviation has prepaid a total of $171.1 million debt principal

Atlantic’s leverage is expected to fall below 6.0 times adjusted EBITDA (trailing) by year-end. Under the terms of its loan agreement, the business will distribute 50% of the free cash flow it generates so long as leverage remains below 6.0 times. Commencing with the fourth quarter of 2012, absent a refinancing or other modification of the loan agreement, Atlantic will again sweep all excess cash to prepayment of debt principal.

Free cash flow generated by Atlantic Aviation during the third quarter of 2011 increased 17.0% to $16.2 million from $13.8 million in the third quarter of 2010 on improved operating results. The improvement in operations more than offset a $1.7 million increase in maintenance capital expenditures year to date.

Business Outlook

MIC reiterated its guidance of $3.00 per share in proportionately combined free cash flow for the full year. Through nine months ended September 30, 2011 MIC generated $2.34 per share in proportionately combined free cash flow.

MIC also reiterated its guidance regarding an expected increase in maintenance capital expenditures. The Company expects that full year 2011 maintenance capital expenditures will increase by approximately $0.26 per share compared with 2010. Through September, the increased expenditures totaled approximately $0.20 per share. The increase reflects planned expenditures that will take advantage of the 100% tax depreciation provided for in the Tax Relief, Unemployment Insurance Reauthorization and Job Creation Act of 2010.

The Company also reaffirmed its segment level full-year EBITDA guidance.

• IMTT is expected to generate approximately $200.0 million in EBITDA for the year having recorded $153.5 million through nine months.
• The Gas Company is expected to generate between $47.0 and $50.0 million in EBITDA for the year and has recorded $35.2 million year to date.
• District Energy is anticipated to generate EBITDA of approximately $23.0 million in 2011 and has produced $18.1 million through nine months.
• Atlantic Aviation is expected to generate EBITDA in a range between $125.0 and $130.0 million in 2011 and has produced $93.8 million through September 30.

Conference Call and WEBCAST

When: Management has scheduled a conference call for 8:00 a.m. Eastern Time on Thursday, November 3, 2011 to review the Company’s results.

How: To listen to the conference call please dial +1(650) 521-5252 at least 10 minutes prior to the scheduled start time. A webcast of the call will be accessible via the Company’s website at www.macquarie.com/mic.

Slides: The Company will prepare materials in support of its conference call presentation. The materials will be available for downloading from the Company’s website the morning of November 3, 2011 prior to the conference call. A link to the materials will be located on the homepage of the MIC website.

Replay: For interested individuals unable to participate in the live conference call, a replay will be available after 2:00 p.m. on November 3, 2011 through November 18, 2011, at +1(404) 537-3406, Passcode: 18179993. An online archive of the webcast will be available on the Company’s website for one year following the call. MIC-G

About Macquarie Infrastructure Company

Macquarie Infrastructure Company owns, operates and invests in a diversified group of infrastructure businesses providing basic services to customers in the United States. Its businesses consist of three energy-related businesses including a gas production and distribution business in Hawaii, The Gas Company, and a controlling interest in a District Energy business in Chicago, and a 50% interest in a bulk liquid storage terminal business, International-Matex Tank Terminals. MIC also owns and operates an aviation-related airport services business, Atlantic Aviation. The Company is managed by a wholly-owned subsidiary of the Macquarie Group. For additional information, please visit the Macquarie Infrastructure Company website at www.macquarie.com/mic.

Forward-Looking Statements

This filing contains forward-looking statements. MIC may, in some cases, use words such as "project”, "believe”, "anticipate”, "plan”, "expect”, "estimate”, "intend”, "should”, "would”, "could”, "potentially”, or "may” or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Forward-looking statements in this report are subject to a number of risks and uncertainties, some of which are beyond MIC’s control including, among other things: changes in general economic or business conditions; its ability to service, comply with the terms of and refinance debt, successfully integrate and manage acquired businesses, retain or replace qualified employees, manage growth, make and finance future acquisitions, and implement its strategy; its shared decision-making with co-investors over investments including the distribution of dividends; its regulatory environment establishing rate structures and monitoring quality of service, demographic trends, the political environment, the economy, tourism, construction and transportation costs, air travel, environmental costs and risks, fuel and gas costs; its ability to recover increases in costs from customers, reliance on sole or limited source suppliers, risks or conflicts of interests involving its relationship with the Macquarie Group and changes in U.S. federal tax law.

MIC’s actual results, performance, prospects or opportunities could differ materially from those expressed in or implied by the forward-looking statements. Additional risks of which MIC is not currently aware could also cause its actual results to differ. In light of these risks, uncertainties and assumptions, you should not place undue reliance on any forward-looking statements. The forward-looking events discussed in this release may not occur. These forward-looking statements are made as of the date of this release. MIC undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

“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.

CONTACT:
Macquarie Infrastructure Company LLC
Investor Relations:
Jay A. Davis, 212-231-1825
jay.davis@macquarie.com
or
Media Relations:
Paula Chirhart, 212-231-1310
paula.chirhart@macquarie.com