News Release

Macquarie Power & Infrastructure Income Fund Files Revised First Quarter Report

TORONTO, ONTARIO (May 11, 2007) – Macquarie Power & Infrastructure Income Fund (TSX: MPT.UN – “MPT” or the “Fund”) today announced that it has filed revised unaudited interim consolidated financial statements and management’s discussion and analysis for the first quarter of fiscal 2007 with Canadian securities regulatory authorities.

The revised financial statements and management’s discussion and analysis were filed to correct the amount of the unrealized gain on embedded derivative instruments. The correction resulted from the recalculation of the fair value of the opening embedded derivative liability related to the Fund’s gas purchase contract. As a result of the recalculation, MPT’s net income in the first quarter was $7.4 million rather than $7.8 million as previously reported.

This calculation has no impact on distributable cash or distributions, and no other changes were required in MPT’s previously announced and filed financial statements and management’s discussion and analysis. The Fund’s revised first quarter 2007 report, which includes the revised interim consolidated financial statements, is available on MPT’s website at www.macquarie.com/mpt and on SEDAR at www.sedar.com.

About the Fund
Macquarie Power & Infrastructure Income Fund invests in infrastructure assets with an emphasis on power infrastructure. MPT seeks to acquire and actively manage a high-quality portfolio of long-life infrastructure assets to improve their financial performance and provide growing, sustainable distributions to unitholders for the long term. MPT’s infrastructure portfolio includes Cardinal, a 156MW gas-fired cogeneration power station in Ontario, and a 45% interest in Leisureworld, a leading long-term care provider in Ontario with over 30 years operating experience. MPT is managed by Macquarie Power Management Limited, which is a wholly owned subsidiary of Macquarie Bank Limited and member of the Macquarie group.

Forward-looking Statements
Certain statements in this news release may constitute forward-looking statements, which involve known and unknown risks, uncertainties and other factors that may cause the actual results to be materially different from any future results expressed or implied by such forward-looking statements. Forward-looking statements use such words as “may”, “will”, “anticipate”, “believe”, “expect”, “plan” and other similar terminology. These statements reflect current expectations regarding future events and operating performance and speak only as of the date of this news release. Forward-looking statements involve significant risks and uncertainties, should not be read as guarantees of future performance or results, and will not necessarily be accurate indications of whether or not such results will be achieved. A number of factors could cause actual results to differ materially from the results discussed in the forward-looking statements, including, but not limited to, risks associated with the Cardinal facility and the power industry, risks associated with MPT’s interest in Leisureworld and the long-term care sector, risks associated with the structure of MPT, and risks associated with business, regulatory and economic conditions. The risks and uncertainties described above are not exhaustive and other events and risk factors including risk factors disclosed in MPT’s filings with Canadian securities regulatory authorities could cause actual results to differ materially from the results discussed in the forward-looking statements.

The forward-looking statements contained in this news release are based upon information currently available and what the Fund currently believes are reasonable assumptions. However, the Fund cannot assure investors that actual results will be consistent with these forward-looking statements. These forward-looking statements are made as of the date of this news release, and the Fund and the Manager assume no obligation to update or revise them to reflect new events or circumstances. The Fund cautions readers not to place undue reliance on any forward-looking statements, which speak only as of the date made.

Non-GAAP Financial Measures
"Income from operations" and "distributable cash" do not have any standardized meaning under Canadian Generally Accepted Accounting Principles (GAAP). Management believes they are useful measures of performance as they provide investors with indications of income from operations and the amount of cash available for distribution to unitholders. The Fund's method of calculating "income from operations" and "distributable cash" may not be comparable to other similarly named calculations.

For further information, please contact:

Harry Atterton
Chief Financial Officer
Tel: (416) 607 5198
Email: harry.atterton@macquarie.com

Aaron Boles
Investor Relations
Tel: (416) 649 1325
Email: aboles@capstoneinfra.com