Transitioning to clean energy can create a more flexible, economic, and resilient electricity system. Small and mid-sized cities can enjoy safer, cleaner, more reliable, and more affordable service. Municipal utility leaders face unique challenges and opportunities when it comes to making the most of this transition. This resource is designed to provide a guide for municipal utilities seeking to make responsible, forward-looking planning decisions and investments within a clean energy transition while meeting their bedrock obligations to ensure reliable service in an economic manner. Benefits to consumers can include lower utility bills, healthier homes, and reduced energy burdens, especially for low-income residents. Benefits to communities can include local jobs, cleaner air and water, healthier communities, and climate change mitigation and resilience. Benefits to utilities can include cost savings, lower financial risk, reduced policy risk, energy security, resilience to weather disasters, and protection from fuel supply shortages.