Advanced metering infrastructure (AMI) can be a powerful tool to help utility customers save energy and money. Utilities can use AMI's granular data for near-real-time customer feedback, time-varying pricing, program targeting, insights on customer energy use, and program design. ACEEE surveyed 52 large utilities and found that most of them are greatly underutilizing this technology. This report discusses several use cases for leveraging AMI data, describes barriers and effective practices, and concludes with recommendations for utilities, program administrators, and regulators.