Who is leading in renewable energy? | CNBC Explains Leave a Comment / Clean Technologies, Climate Action, Climate Change, Renewable Energy, Sustainability, Sustainable Development, Sustainable Energy Around the world, governments are tapping into renewable sources to fuel the growing demand for energy. But as the conversation steers away from the costs of clean energy to the best practices, CNBC’s Nessa Anwar evaluates which countries are having the most success and the challenges that still lie ahead. CNBC International TV on YouTube. Related