Offshore is no longer just for oil
If it's possible to get oil in the middle of the sea, why not do the same with wind?
From this simple question the idea of an offshore eolic plant was born. In the United States, the first one was recently opened. And it's definitely worth a look:
Powering a whole nation with renewable energies only? Someone did just that
From June 16 to September 2, Costa Rica was powered with renewable energies only. The total number of days for this year is now 150.
It's a quite interesting goal, which keeps hopes high for the future of renewable energies, although, as this article explains, we cannot simply take the Costa Rican model, and export it to larger contexts. The use of renewable energies largely depends on the type of available natural resources, whose exploitation always comes with a certain degree of environmental impact.
In the case of the Central American country for example, the great availability of rivers made hydroelectric power particularly convenient. At the other hand of the scale however, we should place the impact of dams.
The future of geothermal energy, explained in one minute
The future of geothermal energy is called EGS, or Enhanced Geothermal Systems. This infographic from the US Department of Energy explains how it works in a quick and simple way.
While traditional geothermal energy needs geothermal water that comes up to the surface naturally through permeable rocks, EGS technology can work without any underground water or suitable rocks.
Cold water is pumped underground through a well and then extracted back up. While it raises to the surface, it captures the heat from the rocks, which is then used to produce electric power.