As the global energy transition accelerates, three core sectors are shaping the future of clean energy: solar photovoltaic (PV), wind power, and lithium battery energy storage. Each industry chain plays a critical role in enabling sustainable electricity generation, storage, and utilization, forming an integrated ecosystem that supports worldwide decarbonization goals.

This article provides an overview of the structure, technologies, and key development trends across these three major new energy industry chains.

1. Solar Photovoltaic (PV) Industry Chain

Efficiency and cost reduction driven by silicon-based technology

Solar photovoltaic technology converts sunlight into electricity through the photovoltaic effect. Continuous innovation focuses on improving conversion efficiency while reducing manufacturing costs.

Upstream: Raw Materials and Auxiliary Components

• Polysilicon: The core raw material requiring ultra-high purity levels (≥99.9999%).

• Silicon wafers: Primarily monocrystalline silicon (over 90% market share) due to higher efficiency; wafer thickness has decreased to below 150 μm.

• Auxiliary materials:

• Photovoltaic glass

• EVA/POE encapsulation films

• Silver paste for electrical conduction

• Quartz crucibles used in silicon melting processes

Midstream: Solar Cells and Modules

• Solar cells: Manufactured through texturing, diffusion, and coating processes, serving as the core unit for photoelectric conversion.

• Modules: Cells are interconnected and encapsulated with glass, backsheet, and frames, where branding and distribution channels become key competitive factors.

Downstream: Power Stations and Applications

• Utility-scale solar farms connected to grid infrastructure

• Distributed generation systems for commercial, industrial, and residential rooftops

• Emerging applications such as:

• Building-Integrated Photovoltaics (BIPV)

• Solar-powered hydrogen production

2. Wind Power Industry Chain

Mature onshore development and rapid offshore growth

Wind power converts kinetic energy from wind into electricity through turbine rotation. The sector is divided into mature onshore wind projects and rapidly expanding offshore wind installations.

Upstream: Core Components Manufacturing

• Blades: Key determinant of wind energy capture efficiency

• Gearboxes: Essential transmission components in doubly-fed turbines (not required in direct-drive systems)

• Generators:

• Doubly-fed induction generators (cost-efficient)

• Direct-drive permanent magnet generators (higher efficiency and lower maintenance)

• Bearings: Main shaft bearings and yaw/pitch bearings

• Towers and foundations: Land-based towers and offshore monopile foundations

Midstream: Turbine Manufacturing

Wind turbine manufacturers integrate blades, generators, gearboxes, and control systems. Technological capability and manufacturing scale represent major industry barriers.

Downstream: Wind Farm Operation

Operators manage power generation, maintenance, and grid integration to ensure stable energy supply.

3. Lithium Battery Industry Chain

Rapid demand growth driven by electrification and energy storage

Lithium-ion batteries store and release energy through lithium-ion intercalation and deintercalation processes. Demand is primarily driven by electric vehicles and energy storage applications.

Upstream: Lithium Resources and Battery Materials

• Lithium resources: Hard-rock spodumene and brine extraction, processed into lithium carbonate and lithium hydroxide

• Cathode materials:

• Lithium Iron Phosphate (LFP): high safety and cost efficiency

• Nickel-rich ternary materials: higher energy density

• Anode materials: Artificial graphite dominates, with silicon-based anodes emerging

• Electrolyte: Lithium hexafluorophosphate as the key lithium salt

• Separators: Wet-process separators widely used for high-energy-density batteries

Midstream: Battery Cells and Packs

• Battery cells: Manufactured via coating, winding or stacking processes, available in prismatic, cylindrical, and pouch formats

• Battery packs: Integration of cells with Battery Management Systems (BMS) and thermal management systems

Downstream: Application Scenarios

• Power batteries for electric vehicles (over 70% of demand)

• Grid-side and user-side energy storage systems

• Additional applications including electric two-wheelers and consumer electronics

Conclusion

Solar power generation, wind energy, and lithium battery storage together form the backbone of the modern renewable energy ecosystem. As technology advances and costs continue to decline, deeper integration among these three industry chains will further accelerate global energy transformation and enable a more sustainable and resilient power system.