Low Voltage Solution (AVR VS SVS)

#1
So in the area where I currently reside, there's an over drawn single phase which almost the entire area uses. The voltage dips to as low as 180 volts sometimes. This makes it impossible to run things such as cookers and the car wash machine at the same time. So am looking to solve this using one of the Sollatek products, either of the SVS OR AVR but I can't tell which one will be enough for my power needs. I have 2 small frigorex, chips fryer, freezer, car wash machine and lots of lights as the load. Any input on this will be appreciated.
 

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