9 November 2017

Quartz: A tiny African island nation will run on 100% renewable energy in less than a decade

Although most of its electricity is produced by generators, which run on imported petroleum products, Cape Verde has started to diversify its energy portfolio. A quarter is now provided by renewable sources. This is good news because there are estimates that, between 2015 and 2020, Cape Verde will almost double its annual electricity consumption to 670 GWh, up from 360 GWh.

With cutting-edge technologies and innovative business practices, Cape Verde can achieve its 100% renewable energy goal in a way that is cost-effective and equitable. One research team suggested that a system based on solar, wind and energy storage (as batteries and pumped hydropower) could meet Cape Verde’s goals. It certainly has a wide range of options for increasing its share of renewable energy to achieve this.

Some countries obtain almost all of their electricity from renewable sources, but these have substantial hydroelectric resources. Cape Verde, lacking large hydropower resources, would be unique in achieving 100% renewable energy with a diverse resource mix. [...]

Cape Verde could also take advantage of an emerging technology called ocean thermal energy conversion. This uses the difference between warm surface water and cold, deep ocean water to produce electricity. It works best in equatorial latitudes where there is a large difference in temperature between surface water and deep water. Assessments show that the ocean waters around the southernmost tip of Santiago might be suitable for it.

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