  The object of the present paper is to characterize the class of Kenmotsu
manifolds which admits conformal $\eta$-Ricci soliton. Here, we have
investigated the nature of the conformal $\eta$-Ricci soliton within the
framework of Kenmotsu manifolds. It is shown that an $\eta$-Einstein Kenmotsu
manifold admitting conformal $\eta$-Ricci soliton is an Einstein one. Moving
further, we have considered gradient conformal $\eta$-Ricci soliton on Kenmotsu
manifold and established a relation between the potential vector field and the
Reeb vector field. Next, it is proved that under certain condition, a conformal
$\eta$-Ricci soliton on Kenmotu manifolds under generalized D-conformal
deformation remains invariant. Finally, we have constructed an example for the
existence of conformal $\eta$-Ricci soliton on Kenmotsu manifold.
