A contactless electricity supply system for a vehicle , the system comprising: - a power transmitter coil unit provided on a ground-side; and wherein: - the power transmitter coil unit includes - a power transmitter coil that is configured to supply electricity contactlessly to a power receiving coil unit provided on a vehicle-side by magnetically coupling with a power receiving coil housed in the power receiving coil unit , and - a case that houses the power transmitter coil , - the power transmitter coil is wound in a planar manner about a winding center axis (O), - a bulge is formed around the winding center axis (O) on an upper face of the case so as to bulge upward from a surrounding surface , - the case of the power transmitter coil unit also houses a first foreign object detection coil and a second foreign object detection coil , - the first foreign object detection coil is disposed on the power transmitter coil and configured to detect a foreign object above the power transmitter coil based on induction voltage generated in the first foreign object detection coil , and - that the second foreign object detection coil is disposed beneath the bulge and configured to detect a foreign object on the bulge based on induction voltage generated in the second foreign object detection coil , characterized in that - it comprises a lifting device that lifts up the power transmitter coil unit from the ground, and - the second foreign object detection coil is disposed higher than the first foreign object detection coil . - a power transmitter coil unit provided on a ground-side; and - the power transmitter coil unit includes - a power transmitter coil that is configured to supply electricity contactlessly to a power receiving coil unit provided on a vehicle-side by magnetically coupling with a power receiving coil housed in the power receiving coil unit , and - a case that houses the power transmitter coil , - a power transmitter coil that is configured to supply electricity contactlessly to a power receiving coil unit provided on a vehicle-side by magnetically coupling with a power receiving coil housed in the power receiving coil unit , and - a case that houses the power transmitter coil , - the power transmitter coil is wound in a planar manner about a winding center axis (O), - a bulge is formed around the winding center axis (O) on an upper face of the case so as to bulge upward from a surrounding surface , - the case of the power transmitter coil unit also houses a first foreign object detection coil and a second foreign object detection coil , - the first foreign object detection coil is disposed on the power transmitter coil and configured to detect a foreign object above the power transmitter coil based on induction voltage generated in the first foreign object detection coil , and - that the second foreign object detection coil is disposed beneath the bulge and configured to detect a foreign object on the bulge based on induction voltage generated in the second foreign object detection coil , characterized in that - it comprises a lifting device that lifts up the power transmitter coil unit from the ground, and - the second foreign object detection coil is disposed higher than the first foreign object detection coil . <EOS>