The price of sodium - ion energy storage batteries has been a topic of significant interest in the energy storage industry. Currently, compared to more mature lithium - ion batteries, sodium - ion batteries generally exhibit a more favorable cost - advantage, especially in the medium to long - term perspective.

The primary reason for the relatively lower cost of sodium - ion batteries lies in the abundance and accessibility of sodium resources. Sodium is one of the most abundant elements on Earth, widely available in seawater, salt lakes, and rock salt deposits. In contrast, lithium resources are more limited and unevenly distributed globally, which often leads to price fluctuations due to supply - demand imbalances. The widespread availability of sodium reduces the dependence on specific regions for raw material sourcing, thereby minimizing the risks associated with supply chain disruptions and high - cost raw materials.

In terms of production costs, although the manufacturing process of sodium - ion batteries is still in the development and optimization stage, continuous technological progress is expected to drive down costs further. The production equipment and processes for sodium - ion batteries share many similarities with those of lithium - ion batteries, which allows for some cost - sharing and economies of scale as the industry matures. Additionally, the use of less expensive electrode materials in sodium - ion batteries, such as hard - carbon anodes and Prussian - blue - based cathodes, contributes to cost reduction.

As of now, the price of sodium - ion battery cells is estimated to be around 0.3 - 0.5 yuan per watt - hour, which is relatively lower than the current price of lithium - ion battery cells in some applications. However, it should be noted that the cost of sodium - ion battery systems also includes components such as battery management systems, packaging, and thermal management, which can add to the overall cost. With the continuous expansion of production scale, improvement of production processes, and technological innovation, industry experts predict that the price of sodium - ion energy storage batteries will continue to decline, making them more competitive in the global energy storage market.

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