This study examines energy efficiency workforce development programs that focus on diversity and inclusion. Hispanics, Black people, and women are underrepresented in the energy efficiency workforce, which offers high-paying jobs compared to the national average. To begin correcting this imbalance, energy efficiency workforce development programs can use outreach and training to prepare underrepresented community members for energy efficiency jobs. Such programs can also recruit and train contractor firms owned by women, people of color, veterans, disabled individuals, and others historically underrepresented in the energy efficiency field. Using five case studies, we show how utilities and efficiency program administrators are crafting workforce development programs that engage traditionally underrepresented workers and students. The report discusses how program administrators modified their programs to meet workers’ needs during COVID-19. We provide recommendations for efficiency program administrators working to advance a more diverse and inclusive energy efficiency workforce.