Leshan City is accelerating the construction of its "241" modern industrial system, listing photovoltaic and energy storage as one of two hundred-billion-yuan-level advantageous industrial clusters. As the core carrying area for the city's photovoltaic and energy storage industry, Leshan High-Tech Zone leverages its vanadium resource endowments, focuses on the energy storage track to build the industrial chain and strengthen its links, and promotes coordinated development across the upstream and downstream of the industrial chain.
Against this industrial layout backdrop, Sichuan Weili De Energy Co., Ltd., as a provincial-level chain leader enterprise, is accelerating its breakthrough in the new energy storage track through a differentiated technical route based on all-vanadium flow batteries. The company has invested more than 300 million yuan in cumulative research and development, holds over one hundred independent intellectual property rights, and its self-developed and self-produced "All-Vanadium Flow Battery Energy Storage System" was successfully included in the Recommended Catalogue of Advanced and Applicable Green and Low-Carbon Technical Equipment in the Industrial Field of Sichuan Province (2024 Edition).
New energy storage enterprises face long R&D cycles and high investment intensity, putting considerable pressure on their finances. Whether R&D expense aggregation is standardized directly affects whether enterprises can compliantly enjoy the super deduction policy for R&D expenses. To this end, the tax authorities relied on a "tax steward" team to conduct on-site personalized coaching, going deep into the enterprise's technology center and finance department, clarifying key points for aggregating expenses such as R&D project initiation, personnel labor, and material consumption in accordance with policy standards, providing explanation and guidance on the requirements for setting up auxiliary R&D expense ledgers, refining the mechanisms for material requisition registration and inventory counting and retention of remaining materials, and guiding enterprises to embed tax-related compliance requirements into the entire R&D management process.
"Tax staff coached us in clarifying the aggregation logic for R&D material consumption, making the aggregation work clearer and more standardized," said Yin Dahong, the company's finance head. In 2025, the company has already enjoyed a super deduction for R&D expenses of more than ten million yuan, and the policy dividends have further enhanced the company's ability to continue tackling technical challenges. With funding and policy support, the company's self-developed all-vanadium flow battery with a liquid-electricity separation structure features safety without easy combustion or explosion, a cycle life of up to 25 years, and significant whole-life-cycle cost advantages.
The solidification of the technical foundation further supports the implementation of large-scale energy storage projects. On July 20 of this year, the 100MW/400MWh "grid-forming" all-vanadium flow battery energy storage station was officially connected to the grid and put into operation, becoming one of Sichuan Province's first batch of grid-side grid-forming vanadium battery independent energy storage pilot demonstration projects. After the station is put into operation, it is expected to absorb approximately 140 million kilowatt-hours of new energy electricity annually.
From technical breakthroughs to scenario implementation, tax and fee services have provided strong support for enterprise innovation and development. Next, the Leshan High-Tech Zone Tax Bureau will continue to closely follow the direction of local industrial development, focus on the R&D tax-related difficulties of innovation entities, carry out solid policy coaching and practical guidance, proactively provide risk reminders and compliance guidance, and serve the high-quality development of the new energy industry.
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