As we've discussed before, battery technology just isn't here yet, and it is probably some way off from financial viability. That said, this article in The Conversation looks at how some homeowners are trying to make things better for themselves in the absence of a high feed-in tariff. It's worth noting that this is largely a residential issue and not one for most businesses for which peak demand matches peak solar generation. Still, some good ideas here.
Here is an excerpt:
When the sun shines at its brightest, many of Australia’s 1.3 million homes with rooftop photovoltaic (PV) solar panelsgenerate more electricity than they use. When this happens, excess electricity is exported to the grid.
In the old days (say, about 2009), most householders would be pretty happy with this, given that in Victoria, for example, it would have earned them up to 60 cents per kilowatt hour exported.
But these premium feed-in tariffs have now been slashed to as low as 6 cents or less. Meanwhile, householders might pay 30 cents per kilowatt hour or more to buy electricity from the grid when their SOLAR PANELS are dormant in the evening.