to save power bill in my house, is it possible a 12 v ac/dc power supply connect to my household outlet to power up the power inverter so ill just plug in my home appliances to the power inverter to its desired wattage compatibility??

 

to save power bill in my house, is it possible a 12 v ac/dc power supply connect to my household outlet to power up the power inverter so ill just plug in my home appliances to the power inverter to its desired wattage compatibility??

Are you asking about using a mains to 12vdc power supply to power up an inverter?
How would that save electricity, as you need the mains power to power up the supply.
We need more info

 

Your inverter is less than 100% efficient, so using it would actually waste power, not save it.