250A Mosfet switch over 250A DC Contactor.

I was thinking of building a Mosfet switching circuit for my 20kWh battery system. DC contactors available in the market are way expensive and those will consume more energy. After a few searches, I found that a Mosfet switch would be the alternative solution for DC contactors. Do you see any issues using the Mosfet switch for higher current applications instead of DC contactors?