  We introduce a generalised form of an emergent dark energy model with one
degree of freedom for the dark energy sector that has the flexibility to
include both $\Lambda$CDM model as well as the Phenomenologically Emergent Dark
Energy (PEDE) model proposed by Li & Shafieloo (2019) as two of its special
limits. The free parameter for the dark energy sector, namely $\Delta$, has the
value of $0$ for the case of the $\Lambda$ and $1$ for the case of PEDE.
Fitting the introduced parametric form to Planck CMB data and most recent $H_0$
results from local observations of Cepheids and Supernovae, we show that the
$\Delta=0$ associated with the $\Lambda$CDM model would fall out of 4$\sigma$
confidence limits of the derived posterior of the $\Delta$ parameter. Moreover,
$H_0$ tensions will be alleviated with emergent dark energy model and this
model can satisfy the combination of Planck CMB data and local $H_0$
observations with $\Delta{\rm{DIC}}\,=\,-2.88$ compared with $\LCDM$ model.
