  The low symmetry and anistropic lattice of 1T$'$ WTe$_2$ is responsible for
the existence of parallel one-dimensional channels in the moir\'e patterns of
twisted bilayers. This gives the opportunity to explore moir\'e physics of a
different nature to that widely observed in twisted bilayers of materials with
hexagonal symmetries. Here, we combine plane-wave and linear-scaling density
functional theory calculations to describe the electronic properties of twisted
bilayer 1T$'$ WTe$_2$. For a small change in the lattice parameters of the
constituent 1T$'$ WTe$_2$ monolayers, we find a substantial moir\'e-induced
striped electrostatic potential landscape in the twisted bilayer, with a
peak-to-trough magnitude $>$200~meV.
