I don’t know if storage is more efficient at point of consumption or point of generation

Some time in the recent past or very near future, an incremental addition of capacity became more resource intensive than incremental new generation and battery.

So the ideal is actually have some at both, because this minimises the most wasteful part allowing transmission to run at average rather than peak generation or consumption.

It’s still better to incur mild inconvenience and eliminate storage and transmission for many applications though.