Hello, according to your conditions and environment, you can install a 650Kw fixed-roof photovoltaic power station, and you can access the State Grid for free according to the Interim Provisions of the State on Grid Connection of Distributed Photovoltaic Power Generation. Tracking can also cost a lot of money, and the maintenance cost is very high. Tracking is not recommended. I am a professional solar power generation project and power station construction in Jining, Shandong Province. Tell me your contact information, and send you some documents about photovoltaic grid connection in China.