The Vacuum Insulated Glass (VIG) is a highly thermally insulating device. Currently, there are commercial products that can reach a thermal conductance value, air-to-air, center-of-glass, of about 0.35 W m-2 K-1. Even though such performance in a building window would save a significant amount in energy use per year, the overall energy embodiment must be considered to quantify better the total energy saving outcomes of the VIG technology. This paper presents an input-output based life cycle analysis of the VIG technology. Taking into consideration all the upstream and downstream contributions in raw materials, production equipment, production steps, labor, transport, etc., the energy savings and embodiment are calculated. A sensitivity analysis of the production process is also provided to understand better the dominant contributions. Finally, a total impact on the return point of the technology is addressed.