According to analyst Bloomberg New Energy Finance (BNEF), investment in clean energy, excluding large hydropower, will be $5.9bn in 2014, down 5% on 2013′s figure of $6.2bn.

However, it will accelerate to $7.7bn in 2016, compared to the average $1bn annual investment seen between 2006 and 2011.

"The advance of renewable energy in Africa reflects a combination of growing local need for power, and awareness that the cost per MWh of clean options such as wind and PV has declined sharply over recent years," according to the report.

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