2012 SUSTAINABILITY REPORT Duke Energy Home | Sustainability | Annual Report | Feedback

Introduction Sustainability Plan and Approach Innovative Products and Services Environmental Footprint Quality Workforce Strong Communities Governance and Transparency

Financial strength supports sustainable growth Performance Excellence: Doing business better Supply Chain combines best practices of both companies Upholding high ethical standards Governance ratings Global Reporting Initiative About our data Forward-Looking Information Non-GAAP Financial Measures Engaged in the political arena Spending with diverse suppliers continues to grow Engaging stakeholders Partnerships and memberships Independent review Shedding a Light on Energy Issues

Global Reporting Initiative

The Global Reporting Initiative (GRI) is a recognized international framework for economic, environmental and social performance disclosure. We provide a detailed response to the GRI indicators here. We believe we meet GRI Guidelines Application Level B.