A cost analysis of hydropower

Hydropower or hydroelectricity is an established renewable energy technology that also may be quite low-cost. Although hydropower requires a steep investment to develop, dams in particular have a long lifespan and generally can produce consistent power over many decades. Consider that the Hoover Dam in the US Southwest has been in service since 1935 ...

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The global Cleantech 100 keeps getting more global

The Global Cleantech 100, now in its 6th year released by the Cleantech Group, is a list of the top companies in this space worldwide.   The Cleantech 100 is no longer just a list of companies from places like the United States, Germany and Japan.  Emerging markets are seeing the benefits of clean technology and some of the leading companies in the world are starting to come from emerging markets like Kenya

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Scenarios and strategies for Africa

As this report from the Intertnational Renewable Energy Agency notes at the beginning, Africa makes up 15% of the global population but has only 5% of the global energy usage.  The worry for analysts and policy makers is that as the population of Africa increases, and development brings African energy usage to a level comparable to the rest of the world ...

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Tanzanian innovator rises to solve water sanitation problems

A local entreprenuer in Tanzania has devised a solution that seeks to eliminate all the problems associated with unsafe/unclean water and sanitation. It will help locals avoid related diseases. What's more is that his solution is low-cost and requires no power compared to other water treatment technologies. It is also made from local materials, recyclable, and versatile in that it can be tailored to treat water in vartually any location/area. The nano-filter combines nano-filtration technologies with sand-based water filtration techniques. It has already been rolled out in the market and is gaining ground.

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