This document provides an overview and introduction to a webinar series on renewables technologies. It outlines the following key points: - The webinar will provide a comprehensive overview of major renewable energy technologies, developments, debates and challenges. - It will involve guest experts and encourage discussion among a diverse group of international participants from technical, business, and sociology backgrounds at various experience levels. - The course plan outlines the topics that will be covered over several sessions in October through December, including different renewable technologies and the policy issues surrounding renewable energy development and climate change.