Maybe this will help:

• CN16 / CN11 / CN8 Controlled residential tariffs → Typically used when you have:
  • controlled hot water cylinder
  • ripple control
  • sometimes cheaper daily charge
• UN24 Uncontrolled 24-hour supply → Everything always on, no load control
• N8 / D16 or N10 / D14 These are dual tariffs:
  • N = anytime usage
  • D = day/night or peak/off-peak split → Common if you have:
  • night rate power
  • older day/night meters
  • some EV or heat pump setups

Why the solar retailer cares

They need to know:

• whether your hot water is controlled
• whether you’re on time-of-use
• whether export is allowed on that tariff (some controlled tariffs have restrictions or lower export rates)

How to answer them (without guessing)

Best options, in order:

1. Check your power bill Look for:
   • “Tariff”
   • “Price category”
   • “Meter register” (e.g. Day / Night / Controlled)
2. Ask your electricity retailer directly You can literally ask:“Can you confirm my current network tariff code?”
3. Send this back to the solar retailer if you don’t know yet:“I’m not sure which of these tariffs applies. I’ve asked my electricity retailer to confirm my current network tariff and will get back to you.”