Difference Between On-Grid and Off-Grid Wind Turbines

Wind power systems can be divided into on-grid wind turbines and off-grid wind turbines.
Although both use wind energy to generate electricity, they operate in different ways and are suitable for different application scenarios.

1. Definition

• On-Grid Wind Turbine
  Connected directly to the public power network. The electricity generated is fed into the grid or used together with grid power to supply loads.
  Before generating electricity, an on-grid turbine relies on grid power to perform functions such as yaw control, blade pitch adjustment, inverter excitation, and heating or cooling. Once the rotor reaches the required speed, the generator starts feeding power into the grid. Without power network support, an on-grid wind turbine cannot operate independently.

• Off-Grid Wind Turbine
  Operates independently from the power network. The generated electricity is usually stored in batteries via a controller and then supplied to appliances when needed. It does not require a power grid and can run in remote areas with no access to public electricity.

2. Battery Requirement

• Off-Grid System: Must include a battery or other energy storage device to store electricity and supply power during low-wind periods.

• On-Grid System: Generally does not require batteries. Power is fed into the grid in real time, reducing storage costs and maintenance.

3. Technical Characteristics

• On-Grid System

  • Large single-unit capacity (up to megawatt level)

  • Higher efficiency and mature technology

  • Requires stable grid connection

• Off-Grid System

  • Smaller capacity per unit

  • Technology is still improving, especially in Maximum Power Point Tracking (MPPT) and system matching

  • Can run independently but efficiency is affected by wind speed variations

4. Application Scenarios

• Off-Grid Wind Turbine: Ideal for remote areas without power network
  coverage, islands, fishing boats, farms, ranches, outdoor aquaculture bases, or as backup power in regions with frequent blackouts.

• On-Grid Wind Turbine: Suitable for areas with a stable power network
  , especially for users who want to lower electricity bills and ensure a reliable power supply. It is the mainstream choice for current and future renewable energy development.

✅ Quick Summary

• If you want lower electricity bills and convenient power supply → Choose an on-grid wind turbine.

• If you need power in remote or off-grid locations → Choose an off-grid wind turbine.

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Explore more at https://energy-elege.com and discover how Elege Wind Turbine can power your life with reliable, sustainable energy.