1) Site assessment and approval (1–4 weeks)

This involves assessing the electrical system and installation location, and applying for permits from local government or utility companies.

Permit approval times vary by region and may take several days to several weeks.

2) Battery Installation (4–8 hours) 

Standard installation (most homes): Typically completed within 4–8 hours. 

Complex installations (e.g., upgrading electrical panels, grid-tie systems, etc.): May take 1–2 days. 

3) System Inspection and Activation (1–2 weeks) 

After installation, the system must be inspected by local government or utility company to ensure compliance with safety standards.

Once final approval is obtained, the system can be officially activated and put into use.

Total duration

Fastest: Approximately 1-2 weeks (quick approval, smooth installation).

Typical: 2-6 weeks (depending on permit approval and grid connection processes).

Complex: May exceed 6 weeks (e.g., involving additional electrical upgrades or special approvals).

To expedite the process, it is recommended to choose an experienced installation team and consult local regulations in advance.