So an average Chinese home takes ~1MWh/mo of electricity, they have 100Mwh and they say 300 discharges a year and support 12000 people. So they expect this to cover about a fifth of the energy usage, which seems pretty great.
Where do you take that number from? 1MWh/mo seems quite high. Also considering that the stored energy will only be used when solar or wind are low, the battery will never be used to supply 100% of the electricity.
That would never happen, because it's from China. We can't allow their superior technology on battery / green energy, so it's better to keep using oil - because politics, you know?