If you want your EV to power your home, or even help support the grid you need:
a) a car that can do this, for example the Nissan Leaf Gen 2
b) a bi-directional car charger.
c) If you are on-grid, you'll need permission from your local electricity network (called a DNSP) to connect the charger to the grid.
Our EV charger comparison table shows one bi-directional charger at time of writing:
1) Delta V2X at $12,000 + installation