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Connect a micro-generator

If you have any questions on how to fill out the form, refer to the micro-generation notice submission guideline posted on the AUC website for detailed information.
Some small micro-generation projects may require utility engineering consultation. Large micro-generation (greater than or equal to 150 kilowatts) project requirements:

Before proceeding to online Form A, please have the following information and documents ready to upload:

Site information:
  • *Site ID number
  • 1 year of consumption history for the site (in kWh – use customer’s power bills or contact retailer)
  • Calculated annual production amount of the proposed generator (in kWh) – to qualify as an MG, this amount shall not exceed consumption history amount
Required Documents:
  • **Single Line Diagram (SLD)
  • Manufacturer’s spec sheet(s) for the inverters
  • Manufacturer’s spec sheet(s) for the solar panels
  • Site Plan (show minimum; address, facility and solar panel array)
*Site ID:
  • If you do not have the site ID for the customer, it starts with 002000+ seven more digits. It can be obtained on customer’s utility bill or by entering site address here: https://www.unetgrid.com/sitecatalog/catalogmanager?doaction=servlet&jobtype=SiteCatalogInitial
  • ENMAX will only review or approve MG interconnection applications for permanent services. Please ensure the service to the site is a permanent service (not a temporary, construction / saw service, or an enrolled site waiting for energization)
**Required information on SLD:
  • Indicate all voltage levels, disconnect ratings (amps) and equipment sizes
  • Customer’s main panel (or switchgear)​​
  • Revenue Meter (include CTs and PT where applicable)​​
  • Main breaker (or disconnect)
  • PV breaker(s)
  • Indicate all solar panels and inverters, and their ratings
  • All other generation on site (including backup)
  • Interconnection transformers on the customer’s site (size and winding configurations: eg. Y-G (DER side) – Delta (utility side)) – common in commercial and industrial sites​


Please note: third-party authorization form may be required by the Wires Owner to share customer information on the customer's behalf.
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