The more energy-efficient option between an induction cooktop and an electric frying pan is the induction cooktop. Induction cooktops are designed to heat pots and pans directly through electromagnetic fields, which results in faster and more efficient heating compared to electric frying pans. According to the U.S. Department of Energy, induction cooktops can be up to 90% energy-efficient, while electric frying pans typically range from 70% to 80% efficiency. This difference in efficiency is due to the fact that induction cooktops only heat the pot or pan, not the surrounding air, reducing heat loss and wasted energy.