Factory Solar PV - The Golden Era Has Arrived, Are You Ready?

A Fact That Turns Perception Upside Down

In 2024, photovoltaic module prices have dropped to historical lows.

A factory with a 5,000 m² roof, installing 500kW of solar:

  • Total investment: 1.8 million yuan
  • Annual power generation: 550,000 kWh
  • Annual electricity cost savings: 440,000 yuan (at 0.8 yuan/kWh)
  • Static payback period: 4.1 years

And this is without considering local subsidies and carbon trading benefits.

Why is Now the Best Time?

1. Costs Have Plummeted

Year Module Price (yuan/W) System Cost (yuan/W)
2020 1.8 4.5
2022 1.2 3.2
2024 0.8 2.4

2. Policies Continue to Support

  • National subsidies: Distributed solar still enjoys green electricity premium
  • Local subsidies: Many regions give additional 0.1-0.3 yuan/kWh subsidies
  • Carbon trading: CCER restarted, carbon assets can be monetized

3. Technology is Mature and Stable

  • Module efficiency: Monocrystalline silicon exceeds 23%
  • Inverters: Huawei, Sungrow global leaders
  • Energy storage: Costs down 60%, solar-storage integration becoming trend

3 Models for Factory Solar

  • Characteristics: Generated electricity used by factory, surplus goes to grid
  • Applicable: Factories with high electricity consumption and high electricity prices

Model 2: Full Grid Connection

  • Characteristics: All generated electricity sold to the grid

Model 3: Solar-Storage Integration

  • Characteristics: Solar + energy storage system

This article is for reference only and not for actual investment purposes.