I think this lack of demand for storage has prevented innovation. Why bother with grid storage, when day and night prices aren't much different? Well now there

I think this lack of demand for storage has prevented innovation. Why bother with grid storage, when day and night prices aren't much different? Well now there are times with negative prices, so there is going to be incentive to get paid to store electricity and sell it later. This incentive should grow as renewable penetration grows. If we have deep solar penetration, then there is the big problem that demand is very high in the early evening and the PV suddenly ramps down production as the sun sets. You can cycle your storage every buying dirt cheap solar and selling to the peak price a few hours later.