Off-grid systems store energy in batteries, while grid-tied systems supply electricity into the power grid until solar power is available. If the grid goes down at night you will not have power

Power requirement is different from house to house, So solar system should be designed by a professional to match your lifestyle and electrical load. we will do it for you

Your system will work continually as hybrid inverters will monitor the solar power generation and if it is not enough automatically switch to the grid power

Hybrid systems are better cost wise and operation wise. It is combination of off grid and on grid systems. the system is connected to the grid, solar panels produce power when the sun is shining, it gets consumed in the home first and whatever is not consumed gets stored in batteries. When the sun goes down the batteries are used up and when they are discharged up to minimum level, then import power from the grid

Yes, you can if your existing inverter supports the batteries. If not, modifications also can be done