Solar power is increasingly being used to electrify off-grid areas in developing countries. The implementation typically starts with a pilot project, but often these never make it to the upscaling phase. This master thesis is studying the research project Solar Transitions model for implementing solar power in the Kenyan village Ikisaya, and thereafter the attempts to upscale or replicate this model to selected villages in Turkana county. I follow the project's process of developing a model for solar power supply in four steps, or translations. First, I look at where the model came from, thereafter I study the model in the Kenyan village Ikisaya, to understand what factors were important for the model to work here, and how it continues to develop after implementation. Finally, the attempts to up-scale the model in Turkana county are studied, to see what happened to the initial model in this process and the impacts this has on how the model works. The purpose is to understand what actually happens when technology travels, and what makes it work in the different contexts. An important finding in this study is that what makes the Ikisaya model work is not easily transferable to the up-scaling phase and that care and follow up is important not only in the pilot phase but also in the up-scaling process. The empirical data for the thesis was primarily gathered during six of field work in Kenya autumn 2013. Theoretically this thesis is inspired by Science and Technology Studies (STS), and uses a framework consisting of the concepts script, flexibility, care and translation as analytical tools.