Energy-storing skyscrapers key to clean power transition

More than a decade since the United Nations declared the renewable energy transition as one of its Sustainable Development Goals, we have seen enormous progress in clean energy. Governments around the world have set policy to accelerate the development of wind and solar power—reducing our reliance on fossil fuels, the largest contributor to climate change. By 2030, the world’s energy system will look profoundly different than it does today; by the decade’s end, renewables’ share of the global mix will approach 50 percent.