This report responds to a request by Senator James Inhofe for analysis of a “25-by-25" proposal that combines a requirement that a 25-percent share of electricity sales be produced from renewable sources by 2025 with a requirement that a 25-percent share of liquid transportation fuel sales also be derived from renewable sources by 2025. The electricity requirement is implemented as a renewable portfolio standard (RFS), while the motor fuel standard is implemented as a renewable fuel standard (RFS). The report provides a summary of the impacts of the Policy on U.S. energy markets and the economy through 2030.

Excel Spreadsheets
Reference
Policy
High oil and natural gas prices
Policy with high oil and natural gas prices
High technology
Policy with high technology
Low cost ethanol imports from Brazil
Policy with low cost ethanol imports from Brazil
Contents	(complete Report)
Executive Summary
1. Background and Scope of the Analysis
Background
Proposal Summary
General Methodology
Sensitivity Cases
2. Analytical Issues
Infrastructure, Market, and Technology Concerns
Other Concerns and Uncertainties
Uncertainties in the Reference Case
3. Energy Market Impacts of the Renewable Policy Proposal
Electricity Sector Impacts
End-Use Energy Consumption
End-Use Carbon Dioxide Emissions
Primary Energy Impacts
Fuel Supply Impacts
Economic Impacts
4. Alternative Cases
Measuring and Interpreting the Relative Impacts of the Policy
Electricity Sector Impacts
Transportation Sector Impacts
Primary Energy Consumption
Fuel Supplies
Economic Impacts
Preface
Contacts
Appendix A. Request Letters
Appendix B. Key Updates and Changes to the AEO2007 Reference Case Assumptions	,