def pvwatts_ac(self, pdc):
        """
        Calculates AC power according to the PVWatts model using
        :py:func:`pvwatts_ac`, `self.module_parameters['pdc0']`, and
        `eta_inv_nom=self.inverter_parameters['eta_inv_nom']`.

        See :py:func:`pvwatts_ac` for details.
        """
        kwargs = _build_kwargs(['eta_inv_nom', 'eta_inv_ref'],
                               self.inverter_parameters)

        return pvwatts_ac(pdc, self.module_parameters['pdc0'], **kwargs)