Community & PartnersSolar Calculator
Green Integrations
Start your assessment

What utility approvals are required for large-scale industrial solar?

Industrial rooftop solar systems must be reviewed by the local utility to ensure they meet grid safety and performance requirements.

UpdatedJune 2026
Read time4 min read
CategoryCommercial Rooftop Solar
Reviewed byGI Engineering
Clear answer

Clear answer, explained.

This typically involves submitting an interconnection application, completing technical studies (such as load flow, short-circuit, and protection coordination), installing approved equipment, passing inspections, and receiving formal authorization to energise and operate the system in parallel with the grid.


Key points

What this means in practice.

  • Utility interconnection application and review
  • Electrical permits and code compliance inspections
  • Protection and relay coordination studies for large systems
  • Metering and net-metering or export configuration
  • Compliance with utility voltage and power quality standards
  • Permission to

When this applies

Best-fit environments.

  • Industrial rooftop systems in the hundreds of kilowatts to multi-megawatt range
  • Facilities exporting excess energy under net metering or generation programs
  • Sites with high-capacity electrical services or substations
  • Projects subject to provincial utility and grid operator requirements

Start your assessment

Understand your facility's energy economics.

Get a utility bill analysis and financial model at no cost. Understand savings, incentives, and system sizing before making a decision.