The document summarizes findings from engagement in East Africa on expanding access to sustainable energy. Key points include: 1) Cross-cutting issues that need to be addressed include improving access to affordable finance, providing support to entrepreneurs, building technical and business capacity, and involving women and youth. 2) For home-based solar solutions like solar home systems and pico-solar lights, substantial advances have been made through cost reductions and more efficient appliances, but quality and financing issues need further work. 3) Mini-grids show promise but high costs remain a challenge; community engagement is important for success.