Electric companies face growing uncertainty in long-term resource planning, driven by rapid load growth from data centers and longer-term electrification trends. Traditional planning methods offer valuable insights but assume static decisions over extended horizons, failing to capture the flexibility inherent in resource planning. This white paper introduces adaptive planning, a dynamic framework designed to complement existing uncertainty management strategies and reduce the risk of future regret by preparing for a wide range of possible outcomes. Drawing on recent EPRI research, this white paper compares adaptive and traditional planning approaches, demonstrating that adaptive planning can deliver portfolios with greater flexibility, comparable reliability, and lower cost across diverse load growth scenarios. By explicitly modeling uncertainty and enabling responsive investment strategies, adaptive planning complements existing tools and reduces the risk of over- or under-building, offering a robust pathway for navigating today’s complex and evolving energy landscape.