This document summarizes Matthew Brady's paper on Ontario's heating strategy from a socio-technical perspective. It provides an overview of Ontario's current natural gas-dominated heating regime, issues with natural gas, the role of niche thermal actors promoting alternatives, and what a comprehensive thermal energy strategy may include. Key points discussed are Ontario's reliance on natural gas for heating, environmental concerns with natural gas, programs supporting renewable heating technologies, and factors to consider in transitioning to a more sustainable thermal energy system.