WWS electricity-generating technologies include onshore and offshore wind, solar photovoltaics (PV) on rooftops and in power plants, concentrated solar power (CSP), geothermal, hydro, tidal, and wave power. 100% of the electricity in Iceland's electricity grid is produced from renewable resources. . This infographic summarizes results from simulations that demonstrate the ability of Iceland to match all-purpose energy demand with wind-water-solar (WWS) electricity and heat supply, storage, and demand response continuously every 30 seconds for three years (2050-2052). All-purpose energy is for. . This past February, 50 HBS Energy & Environment students traveled to Iceland to witness firsthand how the country is harnessing the power of nature to deliver clean energy, hot water, and several other decarbonization solutions that affect not only Iceland, but all of us. This is the highest share of renewable energy in any national total energy budget. In 2016 geothermal energy provided about 65% of primary energy, the share of hydropower was 20%. . capacity (kWh/kWp/yr).