Klamath Negotiations Proposed Scenario Analysis for Potential Decommissioning

Aspen staff prepared an economic analysis comparing potential costs and benefits of proposed relicensing conditions and decommissioning scenarios for a consortium of state, federal and local government agencies, as well as non-governmental organizations. Aspen created this spreadsheet model to evaluate the relative costs to PacifiCorp ratepayers of pursuing relicensing of the Klamath Hydropower Project compared to decommissioning the project. The model integrated output from two hydrological models run by the U.S. Bureau of Reclamation Technical Services Division with engineering cost data and power system economics forecasts. The model used a range of power cost forecasts and of uncertainties around engineering costs to provide a range of potential outcomes for comparing relicensing to decommissioning costs. This analysis presented scenarios that bounded ranges of potential mitigation and decommissioning costs and reflected various power price forecasts from government agencies and utilities. The results were presented to show the likely outcomes of choosing to relicense or decommission.