The proposed screening-level renewable energy zone (REZ) analysis tool aims to assist resource planners and regulators in evaluating the relative attractiveness of geographically broad renewable resource options in a simple, transparent manner. The tool would calculate the delivered cost of in-state and out-of-state renewable energy resources from identified REZs to load service entity areas. It would also highlight opportunities for transmission collaboration between load service entities and potential competition for limited renewable resources. The tool would utilize default assumptions that users could modify to evaluate different scenarios.