10kw Battery backup

Please forgive my English as I am not a native speaker.

I live in a place where power outages and voltage fluctuations are frequent. In the future I am planning on setting up an hybrid solar system but as for now, I am thinking on buying the battery storage first as a solution for the power outages. The idea is charging the battery through the grid and the battery will be the one to supply electricity to my house consistently so that the voltage will be consistent and will have no fluctuations.

My average consumption is 5kw per day. Is it doable, and do you have some suggestions on what battery to get? I am thinking on getting the Huawei Luna 2000.

Thank you.