Calcuates DC power according to the PVWatts model using
        :py:func:`pvwatts_dc`, `self.module_parameters['pdc0']`, and
        `self.module_parameters['gamma_pdc']`.

        See :py:func:`pvwatts_dc` for details.

def pvwatts_dc(self, g_poa_effective, temp_cell):
        """
        Calcuates DC power according to the PVWatts model using
        :py:func:`pvwatts_dc`, `self.module_parameters['pdc0']`, and
        `self.module_parameters['gamma_pdc']`.

        See :py:func:`pvwatts_dc` for details.
        """
        kwargs = _build_kwargs(['temp_ref'], self.module_parameters)

        return pvwatts_dc(g_poa_effective, temp_cell,
                          self.module_parameters['pdc0'],
                          self.module_parameters['gamma_pdc'],
                          **kwargs)