Abstract: An energy storage wheel containing a plurality of solid peripheral segments juxtaposed side by side in the direction of the circumference of the wheel and made from a material having a high density and a low thermal expansion coefficient, such as stainless steel or ceramics. The solid peripheral segments are secured one with respect to the next one and as a whole by using a first and a third continuous winding, respectively, which are connected to the hub of the wheel by a second winding. The windings are constructed of filaments of a material whose density is less than that of the material from which the wheel segments are made.