The document presents a project to design a small, low-carbon water heating system using solar energy for developing regions in Africa. A team was tasked to design a system that uses evacuated solar tubes, thermostatic mixing valves, and other simple, locally available parts. Their chosen design was modeled and prototyped, with calculations showing it could provide sufficient heating using 12 solar tubes. The system would be packaged and shipped cost-effectively to distribute over 200 kits through World Vision to improve lives with reliable hot water access.