A possibility is explored to account for the light curve and the lowexpansion velocity of the supernova SN~2011ht, a member of group of threeobjects showing signatures of both IIn and IIP supernovae. It is argued thatthe radiated energy and the expansion velocity are consistent with the lowenergy explosion ($\approx6\times10^{49}$ erg) and $\leq 2 M_{\odot}$ ejectainteracting with the circumstellar envelope of $6-8 M_{\odot}$ and the radiusof $~2\times10^{14}$ cm. The test of this scenario is proposed.
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