Exhibit 99.1

Macquarie Infrastructure Company LLC Reports First Quarter 2014 Financial Results, Continued Growth in Cash Generation

• Quarterly proportionately combined Free Cash Flow increases 7.9% to $64.9 million
• Proportionately combined Free Cash Flow per share of $1.15 in 2014 versus $1.26 in 2013
• $0.9375 ($3.75 annualized) per share cash dividend to be paid May 15th to holders of record on May 12th
• Galaxy and Boca Aviation transactions closed on April 30

NEW YORK--(BUSINESS WIRE)--April 30, 2014--Macquarie Infrastructure Company LLC (NYSE:MIC) reported 7.9% growth in proportionately combined Free Cash Flow to $64.9 million in the first quarter of 2014 from $60.2 million in the first quarter of 2013. Proportionately combined Free Cash Flow per share declined to $1.15 versus $1.26 in the prior comparable period.

Growth in aggregate Free Cash Flow was offset on a per share basis by an 18.5% increase in the weighted number of shares outstanding following equity capital raises by the Company in the second and fourth quarters of 2013 and the reinvestment in shares of base management and performance fees incurred in 2013. MIC noted that the $0.11 decrease in Free Cash Flow per share for the quarter was a function of principally three matters:

1. The absence of approximately $0.07 per share in incremental Free Cash Flow that MIC expects as a result of the acquisitions involving five fixed base operations (FBO) from Galaxy Aviation and one FBO from Boca Aviation (collectively the “Galaxy transactions”) that did not close in the first quarter of 2014 but for which the company raised equity capital to fund in December of 2013. The Galaxy transactions closed on April 30;

2. The unusually low (and temporary) rate of interest on the debt facilities of Atlantic Aviation in the first quarter in 2013 due to the expiration of interest rate swaps. Had Atlantic Aviation’s debt borne interest at the current rate, proportionately combined Free Cash Flow per share would have been $0.10 lower in the first quarter of 2013; and

3. Approximately $0.03 per share from the timing of 2013 federal income tax provisioning by IMTT management that was subsequently corrected during 2013.

“The performance of our businesses and investments in the first quarter was marginally ahead of our expectations as both Atlantic Aviation and IMTT posted improved results. Our guidance for the full year 2014 is unchanged,” said James Hooke, Chief Executive Officer of MIC.

“Adjusted for the three matters identified – the timing of the Galaxy transactions, the expiration of Atlantic’s interest rate hedges, and the timing of IMTT’s 2013 tax provision - the reported $0.11 decrease in Free Cash Flow per share would have been an increase of $0.09 or 8.0%. With the performance of the business to date, we are on track to meet or beat our guidance and the proposed extension of bonus depreciation could provide additional benefit,” Hooke added.

MIC’s bulk liquid terminals business, IMTT, generated a 16.0% increase in gross profit and a 21.2% increase in EBITDA (Earnings Before Interest Taxes Depreciation and Amortization) excluding non-cash items during the first quarter of 2014 versus the prior comparable period. The financial result reflects a 10.2% increase in terminal revenue driven in part by colder winter weather in the U.S.

The cold weather drove an increase in heating oil throughput and demand for storage tank heating, the cost of which is typically passed through to IMTT’s customers. IMTT also reported an increased contribution from its environmental response services business, OMI Environmental Solutions, primarily as a result of its involvement in the cleanup of the fuel oil spill in the Houston Ship Channel in March.

MIC’s Atlantic Aviation business generated a 9.5% increase in gross profit and an 11.2% increase in EBITDA excluding non-cash items in the first quarter of 2014 compared with the first quarter in 2013. Continued increases in the volume of general aviation flight activity throughout the U.S. drove growth in the volume of fuel sold and active management of margins on fuel sales contributed to the favorable result.

The gains from MIC’s largest businesses were partially offset by a small decrease in the gross profit and EBITDA excluding non-cash items generated by the Company’s Hawaii Gas business, legal and professional expenses incurred by businesses in the Company’s CP&E segment and the seasonal reduction in the production of electricity by the Company’s solar power generation facilities. Continuing supply disruptions and a year on year decline in tourist visits in Hawaii contributed to the softer results for Hawaii Gas. Operating results for the solar facilities in the CP&E segment were consistent with the Company’s expectations.

“We’re pleased with our overall results for the first quarter,” said Hooke. “Assuming the continued good performance of Atlantic Aviation, there is potential upside in our full-year guidance for proportionately combined Free Cash Flow of between $4.35 and $4.50 per share associated with the implementation of certain cost and tax reduction strategies at IMTT in particular.”

MIC has reported a potential 2014 federal income tax liability for its bulk liquid terminals business of $37.5 million. To the extent that IMTT is able to defease that liability, approximately 50% of the benefit will flow through to MIC’s proportionately combined Free Cash Flow. Proposed legislation extending bonus depreciation on capital expenditures made in 2014 could help ease the potential tax burden at IMTT by as much as $22.0 million and increase Free Cash Flow at MIC by approximately $0.19 per share.

The Galaxy Transactions

MIC raised $123.2 million (net) of new equity in December of 2013 to fund, in part, the Galaxy transactions. The Galaxy transactions had been expected to close late in the first quarter but were delayed pending approval by certain of the airport authorities involved. The additional shares issued, combined with the delay in receipt of the expected cash distributions, contributed to MIC’s reported decline in proportionately combined Free Cash Flow per share versus the first quarter in 2013.

On April 30, 2014, Atlantic Aviation completed the acquisitions of the assets and liabilities of Galaxy Aviation and Boca Aviation. The Galaxy transactions included six FBOs and one new hangar that is currently under construction at one of the six airports at which the FBOs operate for a combined purchase price of $230.0 million. The purchase price was funded using cash that had previously been raised or generated and debt facilities that had previously been arranged.

Dividend

MIC also reported that its Board of Directors authorized a cash dividend of $0.9375, or $3.75 annualized, per share for the first quarter of 2014. The cash dividend will be payable on May 15, 2014 to shareholders of record on May 12, 2014. The 2.7% increase in the dividend reflects the improved first quarter performance of the Company’s businesses and investments and its stated policy of targeting a distribution of between 80% and 85% of its proportionately combined Free Cash Flow.

Use of Non-GAAP Measures

MIC owns and has invested in a portfolio of infrastructure businesses based in the U.S. The businesses include: a 50% (unconsolidated) interest in a bulk liquid terminals business, International-Matex Tank Terminals (“IMTT”); a gas processing and distribution business, Hawaii Gas; an airport services business, Atlantic Aviation; and several businesses in which MIC has varying interests that comprise its Contracted Power and Energy (CP&E) segment.

Proportionately combined Free Cash Flow – the cash generated by each of MIC’s businesses in proportion to the Company’s equity interest in the businesses, after holding company costs - increased to $64.9 million in the first quarter of 2014 from $60.2 million in the first quarter of 2013.

MIC regards Free Cash Flow as an important tool in assessing the performance of its capital intensive, cash generative businesses. The Company defines Free Cash Flow as cash from operating activities, including cash paid for interest and taxes, less maintenance capital expenditures and excluding changes in working capital. Working capital movements are excluded on the basis that these are largely timing differences in payables and receivables, and are therefore not reflective of MIC’s ability to generate cash. See “Cash Generation” below for further information.

Consolidated Results for First Quarter

MIC’s consolidated revenue for the first quarter of 2014 increased by 4.5% compared with the first quarter in 2013. Increased product sales at Atlantic Aviation and incremental product revenue generated by businesses in the Company’s Contracted Power and Energy segment were partially offset by a decrease in the utility portion of the revenues generated by its Hawaii Gas business. MIC notes that fluctuations in revenue also reflect the pass-through of primarily energy-related costs that are recovered in revenue.

Viewing gross profit – defined as revenue less cost of goods sold – as MIC’s top line removes the volatility in revenue associated with fluctuations in energy cost inputs and highlights underlying trends in aggregate volume and margins at MIC’s businesses. The Company’s consolidated gross profit grew to $113.0 million in the first quarter of 2014, up 7.8% compared with the first quarter in 2013.

MIC reported $28.6 million of consolidated net income, before taxes, in the first quarter of 2014 compared with net income of $11.2 million in the first quarter of 2013. Consolidated net income rose on improvement in operating results, the absence of a performance fee payable to the Company’s Manager and a larger contribution from its investment in IMTT (accounted for using the equity method), partially offset by an increase in interest expense.

The increase in consolidated interest expense reflects the relatively higher cost of debt at Atlantic Aviation in 2014 following the successful refinancing of that business’ debt facilities in May of 2013 and higher debt levels in MIC’s CP&E segment resulting from the increase in the size of the operations in the segment. Atlantic’s Aviation’s performance in the first quarter of 2013 reflected an unusually low cost of debt of approximately 2.0% on $706.9 million of total debt outstanding. In the first quarter of 2014, following the refinancing of the business, Atlantic Aviation’s all-in cost of borrowing is approximately 4.7% on $516.4 million of debt. Consolidated debt associated with the CP&E segment increased to $291.6 million from $245.4 million in the first quarter in 2013.

MIC’s financial performance during the first quarter also reflects lower consolidated expenses, particularly those incurred by the MIC holding company. MIC generated a performance fee of more than $22.0 million in the first quarter of 2013 but did not generate a performance fee for the first quarter in 2014.

Base management fees are calculated as a percentage of the Company’s market capitalization and were approximately $1.9 million higher in the first quarter of 2014 versus the prior comparable period as a result of MIC’s higher share price and the increase in its shares outstanding. MIC’s Manager has elected to reinvest any base and performance fees payable in new primary shares rendering these effectively a non-cash item.

Cash Generation

MIC reports EBITDA excluding non-cash items on a consolidated and operating segment basis and reconciles each to consolidated net income (loss). EBITDA excluding non-cash items is a measure relied upon by management in evaluating the performance of its businesses and investments. EBITDA excluding non-cash items is defined as earnings before interest, taxes, depreciation and amortization and non-cash items, which include impairments, gains and losses on derivatives and adjustments for certain other non-cash items reflected in the statement of operations including base management and performance fees settled in shares.

MIC believes that EBITDA excluding non-cash items provides additional insight into the performance of its operating businesses, relative to each other and to similar businesses, without regard to capital structure, their ability to service or reduce debt, fund capital expenditures and/or support distributions to the holding company.

MIC also reports Free Cash Flow, as defined below, on both a consolidated and operating segment basis as a means of assessing the amount of cash generated by its businesses and as a supplement to other information provided in accordance with GAAP, and reconciles each to cash from operating activities. MIC believes that reporting Free Cash Flow provides additional insight into its ability to deploy cash, as GAAP measures, such as net income (loss) and cash from operating activities, do not reflect all of the items that management considers in estimating the amount of cash generated by its operating businesses. MIC defines Free Cash Flow as cash from operating activities, including cash paid for interest and taxes, less maintenance capital expenditures and excluding changes in working capital.

Free Cash Flow does not fully reflect MIC’s ability to freely deploy generated cash, as it does not reflect required payments to be made on MIC’s indebtedness and other fixed obligations or the other cash items excluded when calculating Free Cash Flow. Free Cash Flow may be calculated in a different manner by other companies, which limits its usefulness as a comparative measure. Therefore, Free Cash Flow should be used as a supplemental measure and not in lieu of MIC’s financial results as reported under GAAP.

MIC reports certain financial metrics on a proportionately combined basis including, proportionately combined gross profit, proportionately combined EBITDA excluding non-cash items, proportionately combined cash interest, proportionately combined cash taxes, proportionately combined maintenance capital expenditures, proportionately combined Free Cash Flow, proportionately combined Free Cash Flow per share, proportionately combined growth capital expenditures and proportionately combined net debt. The Company believes that such measures provide investors and management with additional insight into the financial results and cash generated by the combined ownership interest in its businesses and investments for the reporting period.

Proportionately combined metrics used by MIC may be calculated in a different manner by other companies and may limit their usefulness as a comparative measure. Therefore, proportionately combined metrics should be used as a supplement to and not in lieu of, financial results reported in accordance with GAAP.

The following table summarizes MIC’s financial performance on a proportionately combined basis during the quarter ended March 31, 2014 and the prior comparable quarter.

IMTT

MIC has a 50% equity interest in IMTT, the operator of one of the largest independent bulk liquid terminals businesses in the U.S. IMTT owns and operates 10 marine storage terminals in the U.S. 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 discussion below refers to results for 100% of the business, not MIC’s 50% interest.

Terminal revenue increased 10.2% at IMTT in the first quarter of 2014 compared with the first quarter of 2013. The increase reflects higher heating revenue (cold weather drove an increase in demand for and the cost of natural gas, the cost of which is passed through to customers), firm commitments (fixed monthly charges for access to infrastructure and storage) and growth in ancillary services (primarily due to weather related increases in volume).

As anticipated, capacity utilization in the first quarter of 2014 was flat with the first quarter of 2013 at 92.7%. Utilization rates are expected to remain slightly below historically normal levels of approximately 94.0% while a number of large tanks are out of service for cleaning and inspection.

The higher cost of heating storage tanks in 2014 drove terminal operating costs up in the first quarter of 2014 relative to the prior comparable period although these costs are typically recovered in revenue as a component of IMTT’s storage contracts. Higher terminal operating costs were partially offset by a reduction in repair and maintenance expenses compared with the first quarter in 2013. Repair and maintenance expenses were elevated in the first quarter of 2013 as a result of the impact of Hurricane Sandy on IMTT’s facility at Bayonne, New Jersey.

Environmental response gross profit generated in the first quarter of 2014 increased to $3.1 million from $2.3 million in the first quarter of 2013 primarily as a result of spill response activity this year related to the cleanup of a fuel oil spill in the Houston Ship Channel. The cleanup activity was ongoing at quarter end and as a result environmental gross profit is expected to be higher than normal in the second quarter of 2014 as well.

Free Cash Flow generated by IMTT rose 24.5% to $42.8 million in the first quarter of 2014 from $34.4 million in the first quarter of 2013 primarily as a result of improved operating results and lower repairs and maintenance expenses. The improvement was partially offset by an increased provision for income taxes of $15.1 million compared with $1.7 million in the first quarter of 2013. MIC believes that a substantial portion of IMTT’s full year federal income tax liability could be offset with the implementation of certain tax strategies by year end.

On April 22, 2014, the Board of IMTT declared a distribution for the first quarter of 2014 in the amount $58.5 million, or $29.25 million per shareholder. Included in the amount was a normal distribution of $43.0 million based on IMTT’s operating results and an additional distribution of $15.5 million based on maintenance of leverage levels as required by the Shareholders’ Agreement. The distribution to shareholders of IMTT was made on April 28, 2014.

Hawaii Gas

Hawaii Gas is the owner and operator of the only regulated (“utility”) gas processing and pipeline distribution network in the Hawaiian Islands. The business is also the owner and operator of the largest unregulated (“non-utility”) propane gas distribution business on the islands.

The volume of gas sold by both the utility and non-utility portions of the business decreased in the first quarter of 2014 compared with the first quarter in 2013. Utility volumes decreased by 2.4% on reduced demand from certain commercial customers and non-utility volumes decreased by 1.3%. A portion of the decrease in demand was attributed to a reduction in tourist visits to Hawaii in 2014 compared with 2013. According to data provided by the Hawaii Department of Business, Economic Development and Tourism through March the total number of visitors to Hawaii declined by 3.2% compared with the same period in 2013.

The decrease in non-utility volume also reflects continuing unreliability in local supplies of LPG and the resulting need to bring a greater portion of supply into the market from off-island sources. The unusually cold weather in the U.S. mainland during the winter of 2014 aggravated the situation as LPG prices rose substantially at the same time. The reduction in volume was partially offset by a reduction in direct expenses.

Hawaii Gas generated $8.6 million of Free Cash Flow in the first quarter of 2014 compared with $9.9 million in the first quarter of 2013. The decrease reflects the softer operating results and higher maintenance capital expenditures partially offset by a lower provision for income taxes.

Atlantic Aviation

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

Gross profit for the first quarter of 2014 increased 9.5% compared with the first quarter of 2013 primarily as a result of an increase in the volume of fuel sold and an increase in average margins on fuel sales generally. Hangar rental revenue and de-icing gross profit were higher as well.

Continued increases in the number of general aviation flight movements in the U.S. during the first quarter of 2014 drove an increase in the volume of jet fuel sold. On a same store basis, the volume of GA jet fuel sold by Atlantic Aviation increased 3.8%. Atlantic Aviation continued to actively manage margins on fuel sales across the network. Average margins on all same store sales rose by 2.7%.

The cold winter weather had both a positive and a negative impact on the performance of Atlantic Aviation. The weather drove an increase in demand for hangar rental and de-icing services. De-icing revenue in the first quarter of 2014 rose by more than 48% compared with the first quarter in 2013. The cold weather also drove increased snow removal and utility costs, both of which are recorded in selling, general and administrative expenses.

Selling, general and administrative expenses were 8.7% higher in the first quarter of 2014 compared with the first quarter of 2013 primarily as a result of costs incurred in connection with the acquisition of an FBO in Kansas City in the fourth quarter of 2013 and the Galaxy transactions which closed on April 30. Same store costs were higher as well, driven by weather-related expenses (snow removal and utilities) and higher labor and incentive costs.

Free Cash Flow generated by Atlantic Aviation during the first quarter of 2014 increased 17.3% to $31.8 million from $27.1 million in the first quarter of 2013. The increase was primarily the result of the improved operating performance, a reduced provision for income taxes and lower maintenance capital expenditures, partially offset by higher interest expense. Cash interest paid rose to $6.2 million from $3.3 million in the prior comparable period due to Atlantic Aviation’s debt bearing interest at a lower rate in the prior period, partially offset by a reduction in overall debt levels in the current period.

At quarter end Atlantic Aviation operated at 63 airports. On April 15, the business sold its operations at Sacramento Mather Airport in California and on April 30 the business commenced operations at the six airports associated with the Galaxy transactions. Atlantic Aviation now operates at 68 airports in the U.S.

Contracted Power and Energy

MIC’s CP&E segment comprises its interests in five contracted power generating facilities (solar photovoltaic) in the Southwest U.S. and a district energy business headquartered in Chicago.

MIC’s CP&E segment produced a 22.8% increase in gross profit in the first quarter of 2014 compared with the first quarter in 2013. The increase relates primarily to the commencement of operations at four solar power generation facilities during 2013, offset by legal and professional expenses and a decrease in finance lease revenue arising out of a previously disclosed termination of a cooling contract by one customer of the district energy business.

Free Cash Flow generated by CP&E increased 1.7% to $2.8 million in the first quarter of 2014 compared with the first quarter of 2013 primarily due to improved operating results, partially offset by an increase in maintenance capital expenditures.

Conference Call and Webcast

When: Management has scheduled a conference call for 8:00 a.m. Eastern Time on Thursday, May 1, 2014 during which it will review and comment on the Company’s results for the first quarter.

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. Please allow extra time prior to the call to visit the site and download the necessary software to listen to the webcast.

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 May 1, 2014 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 May 1, 2014 through midnight on May 8, 2014, at +1(404) 537-3406, Passcode: 29646525. 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 a gas processing and distribution business, Hawaii Gas, several entities comprising a Contracted Power and Energy segment, and a 50% interest in a bulk liquid terminals business, International-Matex Tank Terminals. MIC also owns and operates an 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.

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