This may be obvious to some, but why is the battery storage model on the AC bus only? In practice is this how systems are designed? It would seem to me that placing the battery on the DC bus would negate the additional DC-AC, AC-DC, and then back DC-AC efficiency losses created by placing the battery on the AC bus as opposed to the DC bus.
If in practice the battery is on the DC bus would that be a feature that could be added back to SAM? I read elsewhere that SAM used to have it.