Introduction.- Performance Over Promises.- Trade-offs and Risks in Results Based Approaches.- How Feedback Loops Can Improve Aid and Governance.- Intent To Impact - Diluted Safe Water Monitoring.- Mobilizing Payments for Water Service Sustainability.- Enabling Ecological Restoration Through Quantification.- Incentivizing Impact - Privately Financed Public Health in Rwanda.- A Critical Review of Carbon Credits for Household Water Treatment.- HAPIT, the Household Air Pollution Intervention Tool.- Innovations in Payments for Health Benefits of Improved Cookstoves.- The Role of Mobile in Delivering Sanitation Services.- Combining Sensors and Ethnography to Evaluate Latrine Use In India.- Sustainable Sanitation Provision in Urban Slums - The Sanergy Case Study.- Pay for Performance Energy Access Market.