Now in Europe, there are solar batteries for less than 1Eu/Watt, on E-Bay for less than $1.6/Watt, you can buy for these money more than 60kWatt of solar panels

Now in Europe, there are solar batteries for less than 1Eu/Watt, on E-Bay for less than $1.6/Watt, you can buy for these money more than 60kWatt of solar panels, but with bulk prices you could buy even more, and all this energy will be available during peak hours during day, to power condition systems.