I would agree that, if we're talking about the round-trip efficiency of a system, it is not the highest round-trip efficiency; however, when you think about the whole picture, efficiency is one of the components.
This is an industry that's scaling up now, so you will argue that efficiency will improve over time and is already improving over time, so that's one point. The other point is that we cannot forget about the robustness and resiliency of the system that we're trying to develop going forward. This is also something that hydrogen brings into the mix—