In the face of extreme weather events, states, utilities, and other companies are increasingly seeking ways to boost resiliency while reducing their carbon footprint. The Emissions Quantification Tool (EQT), which was conceived of and sponsored by the Office of Electricity Delivery and Energy Reliability and implemented by researchers at Pacific Northwest National Laboratory (PNNL) with active engagement from the utility and energy industry, quantifies the direct emissions impacts – positive and negative – of specific planned or installed smart grid projects. The free, web-based calculator aims to estimate the impact of NOx, SO2 and CO2 emissions on smart grid infrastructure investments, taking into account specific context and project details with a broadly applicable methodology.