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Let the best of Anthropocene come to you. Sign up for our free newsletters 5 Fixes for The Renewable Grid The US electricity transmission system is often called the world’s largest machine, with around 650,000 miles of high voltage lines and millions more in local distribution. The grid is front and center in the transition to a fully sustainable economy, facing challenges of extreme weather, new power technologies, and huge demand increases. Here are five new ideas for keeping the (zero carbon) lights on. America’s wind turbines are aging. Therein lies a massive opportunity to decarbonize the grid. Upgrading existing wind farms is a climate win hiding in plain sight, according to a new nationwide analysis