No, it really isn't. They are inseparable in building a smart grid of intermittent sources.
A house that is an overall exporter still needs coverage for the night time. Maybe household battery, maybe import from the grid. It does not need a battery capable of weeks or even an entire day.
A city needs some TWh capacity when solar is not functioning, some other capacity when wind is not functioning, etc. It's perfectly reasonable to import some of that from other parts of the country or region which aren't currently cloudy or wind-free, and export when there is excess. Storage needs to cover any shortfall, and some excess to cover growth and the unforeseen. It doesn't need to run for weeks assuming zero replacement for a period of dead calm, or assuming country or continent wide dead calm.
If you want every house or city a self contained island without grid interconnect, then your storage requirements ramp up markedly.
Sure, the covariance between solar and wind production at one site isn't 1; and the covariance between all the contributing sites for wind isn't 1. So it does smooth out to some extent. (To some extent-- there are practical limits on grid size).
However, it's inescapable that you need a whole lot of storage. As we conceptualize it now, the grid has to remain available during 1% and 0.1% events.
Again, your point is orthogonal to what was said. If someone grouses about storage, mentioning a net exporter provides zero information. Mentioning that my house is a net exporter does nothing to inform them.
A house that is an overall exporter still needs coverage for the night time. Maybe household battery, maybe import from the grid. It does not need a battery capable of weeks or even an entire day.
A city needs some TWh capacity when solar is not functioning, some other capacity when wind is not functioning, etc. It's perfectly reasonable to import some of that from other parts of the country or region which aren't currently cloudy or wind-free, and export when there is excess. Storage needs to cover any shortfall, and some excess to cover growth and the unforeseen. It doesn't need to run for weeks assuming zero replacement for a period of dead calm, or assuming country or continent wide dead calm.
If you want every house or city a self contained island without grid interconnect, then your storage requirements ramp up markedly.