Abstract: A solar power generation rating system compares amount of electrical energy generated by a solar power generating apparatus and amount of electricity used, rates whether environmentally friendly use of privately generated electricity is being performed, and allocates points to a user. The system includes a portable terminal having a small solar panel to generate solar power, an electrical energy accumulator, a consumed electrical energy detection and memory unit and a communication unit. The consumed electrical energy detection and memory unit detects the state of use of electrical energy and used electrical energy. The communication unit establishes communication with the rating server, and the rating server includes a receiver and a point allocator to compare the amount of electrical energy generated, state of use and used electrical energy. The rating server performs rating processing in accordance with comparison results, and allocates points.