The regulated benchmark is useful, but it is rarely the cheapest plan. Bill Zap recommends using the Default Market Offer or Victorian Default Offer as a reference point, then checking your actual bill against live retailer plans and your local network setup.
- NSW, south-east QLD and SA: use the AER DMO as the standing-offer ceiling, not the target deal
- Victoria: compare against the zone-specific VDO, because supply and usage charges differ by network area
- Solar households: benchmark plans can miss feed-in tariff value entirely
- Controlled load users: your best plan depends heavily on hot water and off-peak structure
Bottom line: if a retailer advertises a large percentage discount, compare the whole bill structure, not just the headline claim.