Fixed bracket entry doors] have low sills, low interest rates and severe product homogenization. In the context of photovoltaic parity, the era of paying more attention to equipment investment and fixed bracket domination (that is, "cost per watt") in the past will inevitably change to an era of more attention to return on investment and tracking bracket domination (that is, "cost per kilowatt"). For the tracking bracket, because it includes the controller, drive and transmission mechanism, steel structure, etc., it belongs to a self-contained electromechanical control system. There are two kinds of tracking brackets, single axis and double axis, of which the single axis is divided into flat single axis and oblique single axis, and the current market is mainly flat single axis.
Due to the harsh working environment of the bracket, the reliability requirements of each part of the mechanism are very high. Compared with the fixed bracket, the tracking bracket has different degrees of power generation gain: in the case of the flat single axis, it is about 10% to 20% higher (different latitudes vary). For the owner of the photovoltaic power plant or the EPC general contractor, if the increased cost of the tracking bracket is lower than the power generation benefit, and the later operation is stable and reliable, it is worth the investment.
Looking at the world, tracking brackets have been applied in a large number of photovoltaic power plants abroad: in 2019, the global new installed capacity of photovoltaics was 114.9 GW, and the shipment of tracking brackets was 35 GW, accounting for 30.5%. Back in China, due to the initial subsidy domination, the market has not matured, so the proportion of tracking stents is relatively low: before 2016, tracking stents accounted for less than 2%; In 2019, China's photovoltaic new grid-connected capacity was 30.1 GW, and the tracking bracket accounted for 16%. With the maturity of photovoltaic power generation and the advent of the era of parity, it can be predicted that the proportion of tracking brackets at home and abroad will continue to rise, and there is still a large room for growth in the follow-up.
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