What Is a Common Alternative Consensus Model Designed to Be Highly Energy Efficient?

Proof-of-Stake (PoS) is the most common alternative consensus model known for its high energy efficiency. Unlike Proof-of-Work, which requires vast computational power, PoS relies on validators staking their coins as collateral to participate in block creation and validation.

Since validators are chosen based on their stake rather than computational effort, the energy cost is dramatically lower, often only consuming negligible electricity.