But sometimes carbon-free energy sectors, such as solar and hydropower, go head to head over which is cleaner. Not so in Portugal, where officials in Montalegre inaugurated the world’s first hydro-solar power station this week. The Alto Rabagão dam, near the country’s northern border with Spain, added 840 floating solar panels earlier this year, boosting the plant’s total peak capacity by 220 kilowatts. The rig of solar panels is about the size of what might be placed atop a large warehouse. Energias de Portugal, the utility giant behind the project, operates a large business in Brazil, where over 70 percent of power generation comes from hydro plants.

Source: Huffington Post July 07, 2017 15:33 UTC