  We present a longitudinal electrical conductivity calculation method for
disordered alloys applicable from a wide range of density functional theory
(DFT) codes based on the first-principles Wannier-based coherent potential
approximation (Wannier-CPA). For evaluation of electrical conductivity, we
employ two complementary methods; the Kubo-Greenwood formula and numerical
analytic continuation of the current-current correlation function. We apply the
developed method to Ag-Pd alloys and find that the results obtained by the
Wannier-CPA reasonably reproduce previous studies by the well-established CPA
implementation based on the Korringa-Kohn-Rostoker Green's function method
(KKR-CPA).
