General Discussions

Nano (NANO): Nano is known for its speed and zero fees. It is designed to be energy-efficient by using a block-lattice structure that requires minimal energy per transaction.

Chia (XCH): Chia uses a "proof of space and time" consensus mechanism, which is designed to be more energy-efficient than "proof of work". It involves plotting unused storage space on hard drives, rather than using raw computing power. Eco-friendly digital currency

SolarCoin (SLR): SolarCoin rewards the generation of solar energy by issuing SolarCoins to solar energy producers. This incentivizes the production of renewable energy, although it's not necessarily the most energy-efficient in terms of transaction processing.

Algorand (ALGO): Algorand employs a proof-of-stake (PoS) consensus mechanism called Pure Proof-of-Stake (PPoS). It claims to have a minimal environmental impact due to its energy-efficient consensus protocol.

Cardano (ADA): Cardano is another blockchain platform that uses a proof-of-stake (PoS) consensus mechanism. PoS is inherently more energy-efficient than proof-of-work (PoW) used by cryptocurrencies like Bitcoin.