A global transition towards renewable energy is key for a sustainable future, and effective global governance is required to make this possible. However, global renewable energy governance is often regarded as fragmented and ineffective. Existing research has provided useful insights into the multiplicity of governance goals and diversity in institutions, but an understanding of underlying frames is yet lacking. Frame analysis explores how actors interpret and define a problem in different ways, based on which different solutions can be put forward of which some are more adequate than others. It thus provides a compelling new angle to the scientific debate on fragmentation. This paper therefore poses the question how the global energy challenge and the role of renewables are framed throughout the overall institutional complex for renewable energy, among different institutional types, and across individual institutions. To facilitate the search for an answer, it applies an innovative computational method that allows for a large-scale and multi-level frame analysis. The results demonstrate that renewable energy institutions currently prioritize climate change, with a stronger growing focus on universal access to energy services, while undermining concerns of energy scarcity. Nevertheless, frames vary strongly across different levels of governance, and among various types of institutions. The paper therewith forms an important contribution to our understanding of global renewable energy governance and its fragmented nature.