Interim Management Statement

27 April 2011

Aggreko plc

INTERIM MANAGEMENT STATEMENT

Aggreko plc, the world leader in the supply of temporary power and temperature control, is today issuing its Interim Management Statement covering the period from 1 January 2011 to date.

Trading

The business has had a strong start to the year. Group revenues in the three months to 31 March 2011 grew by 9%; excluding the revenues from major events (Vancouver Winter Olympics, FIFA World Cup and Asian Games), this represents 18% underlying growth in constant currency and excluding pass-through fuel.

International Power Projects revenues grew 19% in constant currency and excluding pass-through fuel. Order intake in the first quarter of 280 MW was very encouraging, with notable orders signed in the Bahamas, Argentina, Oman and Indonesia; in addition, as previously announced, we recently signed a Letter of Intent with Tokyo Electric Power Company for the supply of 200 MW of emergency power for a minimum period of a year. This Letter of Intent has now been converted into a signed contract with an estimated value of around $100 million. Average MW on rent in the quarter was 18% higher than the prior year, and the low levels of off-hires seen in the last quarter of 2010 continued into the first quarter of 2011. Trading margin ran at a similar level to that achieved in the full year in 2010.

Local business revenues in the first quarter in constant currency were at similar levels to the prior year, but grew 18% on an underlying basis (i.e. in constant currency and excluding the revenues generated from the major events noted above). Revenues in our North American business in the first quarter were up 33% on an underlying basis, maintaining the strong momentum with which we finished 2010. Revenues in Europe and the Middle East grew by 4%. Aggreko International's Local business performed very strongly with underlying revenues growing by 29% with all areas performing well; our Australian business in particular had a very strong first quarter. We made good progress against our strategy to increase the reach of our Local businesses, opening new service centres in Durban, Lima and Delhi; as previously announced, we also completed the acquisition of NZ Generators Limited in New Zealand. On an underlying basis, margins in the Local business overall were similar to the same period in the prior year.

Financial position

Largely as a result of increased rates of capital investment, net debt at £195 million has increased by £63 million in the three months to 31 March 2011 and compares to net debt of £163 million at 31 March 2010. During the first quarter we completed and drew down the funds on a £177 million private placement which, together with our recently refinanced bank facilities, give us total facilities of £762 million which is ample to finance the current needs of the business.

As announced at the time of our 2010 results, we are proposing a return of capital to ordinary shareholders of approximately £150 million which, subject to shareholder approval, is expected to be paid in July 2011.

Chairman

Philip Rogerson will announce at today's AGM that he intends to retire from the Board of Aggreko in 12 months' time, at the 2012 AGM, at which point he will have served for 15 years on the Board and 10 years as Chairman. He will be succeeded as Chairman by Ken Hanna, who joined the Board as an independent non-executive director in October 2010 and is currently Chairman of Inchcape plc and a non-executive director of Tesco plc.

Philip Rogerson said: "Although I greatly enjoy my role with Aggreko, I believe that there comes a time when a change of leadership is appropriate. We have chosen to announce this change now in the interests of ensuring an effective and transparent process of succession."

Current Outlook

The strong start seen in the Local business is encouraging, but as always the performance for the year as a whole will be heavily dependent on trading during the summer months. Despite political instability in a number of our markets, International Power Projects has also had a good first quarter; in the light of the strong order intake in recent months, and the healthy pipeline of enquiries, we plan to increase the rate of our fleet capital expenditure in the second half by about £70 million, and to spend around £390 million across the Group as a whole during 2011.

As a result of movements in the US Dollar : Sterling rate, we are now applying a rate of 1.60 to our forecasts for 2011, rather than 1.56 used at the time of our 2010 results announcement. The impact of this is to reduce anticipated full year trading profits by around £7.5 million. Despite this adverse exchange rate movement, we now expect trading profit for the year to be slightly ahead of 2010, which would represent underlying growth in constant currency of around 20%.

- ENDS -

Enquiries to:

Rupert Soames / Angus Cockburn

Aggreko plc

Tel. 0141 225 5900

Neil Bennett/ George Hudson

Maitland

Tel: 020 7379 5151