And now that the Sun is a bit higher in the sky and clears the slightly-too-tall trees in the back yard, the in-laws have also stopped using electricity from the grid. The battery charges to full by about 1pm and it’s all export after that. And that’s with them not having changed their power usage behaviour at all. Just need to get their stove top replaced with an induction one (which apparently requires some re-wiring) and then gas can be disconnected.