The OpenSolar project and platform aims to use blockchain and IoT-based smart contracts for disintermediation and contractual automation in financial processes to drive community-owned solar projects. We seek to develop open source core technology to streamline the flow of crowd-based funds (e.g., muni bonds and equity) to finance the deployment of solar assets, and allow the end-users to own these resources in a short time frame through regular utility-like payments driven by energy generation and consumption IoT data. The payment platform is built on the Stellar blockchain, and our pilot projects are done in public schools in Puerto Rico.