Maybe I'm wrong here but everyone seems to be considering only home use. During day time there's higher demand from factories and industrial processes even if home use its at its lowest.
Hmm? Why guess? Each provider has public sites with graphs of demand and generation. Here's the CalISO one: https://www.caiso.com/TodaysOutlook/Pages/default.aspx showing a funny camel shape today of an 8AM morning peak (heating) and then a 5:30 PM peak. What we can't see is the demand that would be placed on the grid around solar noon, if it weren't being serviced directly by panels.
Industrial and commercial customers often engage in Demand/Response programs though (primarily for building HVAC), so if there's a likely residential spike, they can shed some of their load.
Industrial and commercial customers often engage in Demand/Response programs though (primarily for building HVAC), so if there's a likely residential spike, they can shed some of their load.