I live in Orange County and Southern California Edison (SCE) is our utility provider. Someone told me that, if you don't have a power wall, all the solar power generated will first go to the grid and then you draw power back from the grid. I thought that solar power generated first goes towards the home usage and only excess power is sent to the grid. Which one is correct? The sequence may be important because, if the power is sent to grid first, SCE net metering will have some cost, as sell at a lower rate than the rate at which we buy from SCE.