The $1.53bn invested in 152 deals in the three months ended 30 September is down 30% from the second quarter and 11% from the third quarter of 2009, according to the Cleantech Group and global financial consulting giant Deloitte, which track investment across a broad swath of sectors including transportation, energy efficiency and water.

Sheeraz Haji, president of the research and advisory group, says businesses and investors are still grappling “with a recovery that hasn’t yet taken off,” which is reflected in the quarterly figures.

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