Performance at month end

IMPAX ENVIRONMENTAL MARKETS plc All information is at 31 August 2009 (unless otherwise stated) and unaudited. DATA AND PERFORMANCE Data Pricing and Performance IEM MSCI Net World Asset Small Share price (pence) 102.6 Value Cap* Warrants (pence) GBP 14.5 Total fund size (m) GBP 347.2 Diluted NAV 112.77 n/a (pence) Market capitalisation GBP 313.0 Premium/discount -9.84 (m) (%) Management fee (%) 1.0 Undiluted NAV 113.80 (pence) Established 22 February Performance** 2002 Fund structure Investment 1 month (%) +4.6 +8.8 Trust Number of holdings 89 3 months (%) +10.6 +15.9 (including unlisted) Exchange London 1 year (%) -12.2 -3.4 Currency GBP 3 years (%) +14.0 +1.1 ISIN number GB0031232498 5 years (%) +73.3 +42.3 Sedol 3123249 Reuters RIC code IMPX.L * Performance data is in Total Return. ** Performance data is for undiluted NAV. Bloomberg code IEM LN TOP TEN HOLDINGS Company Holding % Description Country Clean Harbors 2.3 Hazardous waste US Gamesa 2.3 Wind turbine manufacturer Spain Telvent 2.2 Utility software Spain Itron 2.2 Automated meter reading US Ormat 2.1 Geothermal Israel/US Pentair 2.1 Water treatment US LKQ 2.0 Recycled auto parts US Transpacific 2.0 Waste management & recycling Austria Nibe 2.0 Ground source heat pumps Sweden Vacon 2.0 Power electronics Finland TOTAL 21.2 PORTFOLIO ANALYSIS* Geographical Company Size US and Canada 36% >$2bn 49% EU and EFTA 45% $200-2bn 37% Rest of the World 16% <$200m 11% Cash 3% Cash 3% Sectoral PE ratios Energy 41% PER >20x 33% Water 23% PER 15-20x 34% Waste 33% PER <15x 27% Cash 3% Unprofitable 3% Cash 3% * of funds invested as of 31 August 2009 IMPAX ENVIRONMENTAL MARKETS plc MANAGER'S COMMENTARY (August 2009) During July the Company NAV increased by 4.6% compared to the MSCI World Small Cap which increased by 8.8%. In energy and climate change policy news, the Democratic Party of Japan won a historic victory in the general election, with a manifesto that includes pledges to cut GHG emissions by 25% from 1990 levels by 2020. Key to this goal will be a domestic cap-and-trade scheme and the adoption of an arrangement whereby power companies buy renewable energy for a fixed price. The Australian government took a crucial step in boosting renewable energy growth, by mandating a 20% renewable energy target by 2020, which could potentially unleash AU$22bn in investment in the sector. In the US, the Energy and Treasury Departments detailed plans to offer US$2.3bn in new tax credits to clean energy equipment manufacturers by 2010. In the water treatment and pollution control sector, the US Energy Department selected 25 projects to share US$300m in economic stimulus grants for alternative fuel vehicle and infrastructure projects, including natural gas. In the EU, data collected by the European Environment Agency showed that 2007 levels of sulphur oxides, nitrous oxides and carbon monoxide were significantly down on 1990 levels. In the waste sector, the US Senate passed an extension of the 'cash for clunkers' scheme, allocating an extra US$2bn for the replacement of old vehicles with newer more efficient models. Meanwhile, the Chinese government announced that it will stop accepting imports of scrap polysilicon to comply with environmental regulations such as solid waste pollution laws. In Alternative Energy & Energy Efficiency, companies exposed to easing credit markets and cyclical recovery in the construction sector outperformed. Kingspan (buildings energy efficiency, Ireland) was up 34% following better than expected results, and Zumtobel (energy efficient lighting, Austria) rose 35%. In Water Treatment & Pollution Control, Mueller Water (infrastructure, US) rose 23%, benefiting from the cyclical recovery and increased appetite for risk following poor performance due to debt levels. The continued stimulus opportunity for water stocks in the US boosted Pentair (water infrastructure, US), up 5%, as funding announcements continued. In Waste Technologies & Resource Management, Clean Harbors rose 13% over the period, recovering from previous weakness and announcing completion of an acquisition. Covanta (waste-to-energy, US), also recovered and was up 8%, given strong long-term secular trends in the waste market. Solar was weak due to ongoing oversupply issues, affecting Sunpower (US) and PV Crystalox (UK). Macro concerns in Asia weakened portfolio holdings in Hong Kong such as China High Speed (wind turbine components). Metals recycler, Sims (Australia) suffered due to profit taking and concerns over margin pressure. Latest information available at: http://www.impax.co.uk/impax/funds/listed_funds/environmental_plc/ 16 September 2009 ---END OF MESSAGE--- This announcement was originally distributed by Hugin. The issuer is solely responsible for the content of this announcement.
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