I never understood this "lets place a battery to every home" movement. You dont want to place batteries at home. Batteries are expensive, they need maintenance, they are a fire hazard, they wear out. The grid operator needs to place batteries. They need to smooth out the power fluctuations, and supply the grid with reliable power. That is what we are paying for.
If your country is not using net metering, there could be a financial point to place batteries. But it is wrong. They should be using net metering, and have battery stations. The reasoning, is fundamentally wrong.
It is a different story than placing solar panels. You have a roof, an empty space, the energy company does not have lots of empty space.
And it is not economical. Solar panels are a different story, since even microinverters would be the most optimal. For batteries, the electronics scales very well. In theory, you can create a 10KV battery pack, run it through some SiC transistors, inductors, transformers, and get any AC voltage. It scales well upwards in power, not so much downwards. It costs hundreds of millions of dollars to make a power plant, surely, the grid operator will eventually be able to afford reasonably sized battery banks.