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Taking the Solar Sail System combined by building construction and photovoltaic generation for example, this paper designs Solar Photovoltaic Remote Data Transmission System based on GPRS which completes data receiving, processing and evaluation indicators' calculation. The framework, composition and communication protocol of the active energy transmission were discussed in detail. The design of Data Centre including data receiving and processing based on .NET platform as well as the mathematical models of the system evaluation indicators is the focus of this paper. According to field test, the test results show that the system perfectly realized remote transmission of solar photovoltaic power and it can not only lay data foundation for calculation of system evaluation indicators, but also provide an effective and reliable basis to the model of renewable energy demonstration.