QUADRENNIAL ENERGY REVIEW SECOND INSTALLMENT: TRANSFORMING THE NATION'S ELECTRICITY SYSTEM Quadrennial Energy Review: Second Installment (Full Report) Quadrennial Energy Review Summary for Policymakers Chapter I: Transforming the Nation's Electricity System Chapter II: Maximizing Economic Value and Consumer Equity Chapter III: Building a Clean Electricity Future Chapter IV: Ensuring Electricity System Reliability, Security, and Resilience Chapter V: Electricity Workforce of the 21st-Century: Changing Needs and New Opportunities Chapter VI: Enhancing Electricity Integration in North America Chapter VII: A 21st-Century Electricity System: Conclusions and Recommendations Chapter VIII: Analytical and Stakeholder Process Appendix: Electricity System Overview