This report examines how federal policy changes between January 2025 and May 2026 could affect energy prices, economic growth, air pollution, healthcare costs, jobs, and grid reliability through 2040. Energy Policy Simulator modeling shows that these changes will raise energy costs, worsen public health outcomes, limit new power generation, and increase pressure on household and utility budgets. The analysis focuses on seven major policy shifts and their impacts on families, businesses, and the energy system.