Can you recommend me any cleantech investors focusing on Africa

I am seeking websites that may list or talk about African cleantech investment. I would like to invite cleantech funds to participate in a cleantech investment conference for Africa, called Viridis Africa. On the 15th & 16th October 2013 the third Clean Technology business and investment matchmaking conference for the African continent is to be held at the Killarney Country Club, Lower Houghton South Africa. Viridis Africa is dedicated to entrepreneurs and corporates who are seeking funding to introduce clean technology solutions and services. Principals who would present their business opportunities at this event would have the audience of numerous local and foreign investors, stratified according to their interest and investment criteria.      Investors would include venture capital, private equity, project and corporate finance outfits and project developers dedicated to the cleantech sector. They would also include North American, European funding agencies, major Asian industrial conglomerates, technology specific investment funds and major companies who seek strategic alliance and acquisitions. Entrepreneurs from all over Africa are invited to submit a business plan for inclusion in the programme. Interested parties can mail their cleantech proposals to suza@viridisafrica.comwww.viridisafrica.com