India is experiencing a rapid surge in electricity demand driven by the widespread adoption of room air conditioners (ACs), propelled by rising incomes, urbanization, and increasingly severe heat waves. We estimate that between 2025 and 2035, India will add an additional 130 million new room ACs, and without targeted interventions, room ACs alone could contribute over 180 GW to India’s peak load by 2035, straining the power system and necessitating costly investments in new capacity.