Pre-Retogeum Pre-Retogeum is a platform that allows distribution/transaction/consumption of electric energy, and supports P2P-based electricity trading by allowing any individuals and companies to participate. To this end, Retogeum is structured to create objective and visible value for intangible power energy by utilizing the technology of blockchain. 1. A platform that supports distribution / transaction / consumption of electric energy. 2. A platform that can operate as a trading unit by giving value to intangible electricity. 3. A platform that supports P2P (Peer to Peer) power trading. 4. A platform that can be applied to various power consumption.