ICYMI: Among the many blockchains, Minna Denryoku used NEM’s public blockchain to realize this system.
Use mosaic function to issue tokens. As for the reason for choosing NEM, Mr. Miyake cited three points: “speed,” “transaction cost,” and “being public.”
He says, "Ethereum uses a lot of energy for mining, so it is not suitable for RE 100 purpose and its speed is slow.
With ENECTION 2.0, real time is not required but some speed is necessary.
For the NEM, I also concluded that the PoI algorithm is also characteristic and good. "