The REN21 Renewables Global Status Report (GSR) provides an annual look at the tremendous advances in renewable energy markets, policy frameworks and industries globally. Each report uses formal and informal data to provide the most up-to-date information available. Reliable, timely and regularly updated data on renewable energy are essential as they are used for  establishing baselines for decision makers; for demonstrating the increasing role that renewables play in the energy sector; and illustrating that the renewable energy transition is a reality.