System (ReEDS) model. The first portion of this report is focused on documenting augmentations made to the ReEDS model, building on prior work by Martinez et al. (2013). The work conducted and documented here aims to provide insights into the types of analysis this novel modeling capability can enable, rather than analyzing potential U.S-Canada power sector futures. The model is limited to long-term capacity expansion and high-levels steady-state operations and does not include detailed production cost of dynamic simulations. Development and validation work was conducted throughout the 2014 calendar year, relying heavily on the National Energy Board's Canadian Energy Futures 2013 (NEB 2013) study for input data, as well as significant communication with Natural Resources Canada staff. The analysis was conducted in the fall of 2014 and relies on model versions and data available at that time. In particular, the analysis uses published data inputs where available and applicable. In some cases, internal data and assumptions are applied to account for rapid changes in the market outlook that are not captured by the published literature. The version of ReEDS used is the NREL Base Model as of October 2014. This body of work includes a sensitivity analysis that considers several future power sector scenarios out to 2036. The analysis uses a self-consistent framework to evaluate the impact of assumptions on the model behavior. In particular, we model the impact of natural gas price projections, increased Canadian hydropower deployment, and increased renewable energy (RE) generation penetrations. While none of the scenarios presented are intended to be a forecast or prediction, the scenarios can collectively be used to understand trends and drivers within the modeled framework.