Flip flop toggling will consume more power.
The best state encoding to use depends on application.
1. To reduce the power, the state representations in the FSM are replaced by Gray Code. Gray code only changes one bit at a time, hence, power consumption can be reduced.
vlsi123 said:2. One hot yet another coding technique for low power. But requires more number of bits, more area. usefull for describing the bus protocols.
3. The latest is partioned FSM architecture. It is best suited to model the low power RTL Design.