This research examines the impact of behavioral economics interventions on energy consumption patterns in Egypt, addressing critical gaps in sustainable policy implementation. Utilizing an explanatory sequential mixed-methods design, the research employed: 1) a randomized control trial (RCT) with 435 participants across 11 governorates, and 2) in-depth semi-structured interviews with 30 key stakeholders (policymakers, energy providers, and consumers). Data collection during July 2024 incorporated validated behavioral experiments, household surveys, and spatial energy audits. The analysis reveals three key findings: First, cognitive biases - particularly present bias and loss aversion - account for 62% of variance in energy decisions (p < 0.01). Second, while price elasticity measures showed limited impact (β = 0.12), behavioral nudges like normative social comparisons increased conservation by 16.9% (95% CI [14.2, 19.6]). Third, qualitative data identified cultural dimensions moderating intervention effectiveness, particularly collective versus individualistic consumption norms. These results demonstrate that hybrid policies combining behavioral "nudge" strategies with infrastructural investments yield 23% greater adoption of sustainable practices than traditional approaches alone (F (2,432) = 9.87, p = .002). The study contributes to energy policy literature by developing a culture-sensitive behavioral framework for MENA regions, with implications for SDG 7 (Affordable and Clean Energy) implementation.