Your AI is messing with you. 1MW requires ~6 acres, so a GW requires 6000. A square mile is 640 acres. Being generous, let's round up to 10 square miles.

Your AI is messing with you. 1MW requires ~6 acres, so a GW requires 6000. A square mile is 640 acres. Being generous, let's round up to 10 square miles. Times 3 and convert to square kilometers gives 78.