A map of which network data is public, which is request-only, which requires a confidentiality agreement, and which we infer from observable behaviour. Useful before you bet a development on a number you can't audit.
By FelixFusion research
AEMO publishes a lot. They do not publish everything. Some of what they don't publish is genuinely market-sensitive. Some of what they don't publish, the TNSPs do. Some of what neither publishes, we can infer from dispatch behaviour with reasonable confidence.
Here is a working taxonomy we maintain internally and now publish.
Tier 1 — Public and complete: dispatch, pre-dispatch, MLF/DLF tables, ISP scenarios, connection enquiry register where the proponent has consented, published binding constraints, network support and control ancillary services, generator information, registered participants.
Tier 2 — Public but stale or summarised: TNSP network maps (PDF, mostly annual), some DNSP feeder data (varies by state), planning incident logs, regional reference price methodologies.
Tier 3 — Request-only: full GIS exports for the transmission and sub-transmission networks (TNSPs vary, some are responsive, some are not).
Tier 4 — Not published, can be inferred: actual binding constraint duration in 5-minute windows (we reconstruct from dispatch + price), parcel-level connection feasibility (we score from voltage class, distance to nearest substation with headroom, and historical congestion).
Where our scores depend on inferred data, the parcel record shows a 'confidence index'. We will never call something a P50 if the underlying inputs are Tier 4. We will call it our best estimate, and show our working.
Book a 30-minute walkthrough on a region you know. We will surface three parcels you have not seen, and explain — line by line — why our score for one of yours disagrees with your developer's gut.