Solar power transaction method and device based on block chain, and medium

The invention discloses a solar power transaction method and device based on a block chain, and a medium. The method comprises the following steps: acquiring a power transaction type selected by a power consumption terminal and a published to-be-purchased power purchase quantity, the power transaction type comprising purchasing traditional power and purchasing solar power, and if the power transaction type is purchasing solar power, acquiring a saleable power sale quantity published by each solar power generation terminal; matching the electricity purchasing quantity with the electricity selling quantity according to the intelligent contract; obtaining a to-be-selected solar power generation end; acquiring characteristic information of the power utilization end and the to-be-selected solarpower generation end, matching the characteristic information of the power utilization end with the characteristic information of the to-be-selected solar power generation end to obtain an optimal solar power generation end,