This presentation explores potential impacts of variable renewable energy on coal and natural gas generation in the Northwest-Central region of the United States. Using EPRI’s United States Regional Economy, Greenhouse Gas, and Energy model (US-REGEN) model, this work examines electric sector investments and detailed market operations under scenarios that explore large-scale wind and solar power generation deployment. Model results suggest future renewable resource deployment in the Northwest-Central region likely will displace investment in new natural gas combined-cycle units, and will provide strong incentives to export surplus electricity generation to neighboring regions given low dispatch costs for in-region power generators. The modeling scenarios described in this analysis illustrate how carbon dioxide (CO2) emissions changes and incremental policy costs of implementing renewable portfolio standards (RPS) extend to other regions, which raises important questions for investors, analysts, and policy-makers about how to account for cross-regional impacts of renewable power deployment. Additionally, this analysis quantifies how natural gas prices and RPS mandates jointly influence coal and wind power asset valuation.