Treehugger: Costa Rica just ran its electricity grid for 113 days in a row entirely on renewable energy. Using a mix of wind, solar and its abundant supply of geothermal energy (a nice boon for anyone wanting to have dispatchable renewables!), this small nation is proving that fossil fuels are no longer necessary to keep the lights on. That’s just one snippet of news from Robert Llewellyn’s Fully Charged news update, which also includes some cool information about gigantic, 180-meter (590-feet) high, 8MW wind…

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