Back on 18th May 2026:

• I noted ‘The *basics* of how Project Energy Connect will appear in NEM Data’.
• and alluded to the basics being quite simple to understand.

But this really is an area where ‘the devil is in the details’ … so there are a significant number of market participants (and market junkies like us at Global-Roam Pty Ltd) striving to understand the gory details:

• such as modelling loop flows in the LP-based model in NEMDE that has traditionally been just ‘hub and spoke’ in the initial decades
• and so on…

So it’s with interest that we use the ‘PASA’ widget in ez2view to check out the early data for PEC Stage 2 that’s now being published by AEMO in relation to the MT PASA solution.

Two snapshots from ez2view

In order that you can see the difference between the numbers being published for PEC Stage 2 and the other interconnectors, I’ve included two snapshots here, starting with the NSW1-SA1 interconnector (i.e. PEC Stage 2):

This widget is showing the data published for 01:00 (NEM time) on Monday 17th August 2026:

• Which is the second of the weekly updates that PEC stage 2 has appeared in the data;
• Noting there was an earlier update:
  • (i.e. the ‘Previous Run’) for 01:00 (NEM time) on Monday 10th August 2026.
  • which, on quick scan, appeared identical to that which was published a week ago, and which is shown above. CORRECTED BELOW!
• Noting that the interface says that there was an earlier update:
  • (i.e. the ‘Previous Run’) for 01:00 (NEM time) on Monday 10th August 2026.
  • which (as you’ll see in the struck-through bit above) on first quick scan, appeared identical to that which was published a week ago.
  • But that was really a shortcoming in v9.19 of our software that only became apparent with this particular corner case
  • because the reality is that:
    • though there was an MT PASA results set published on Monday 10th August 2026;
    • the entries for NSW1-SA1 were null (i.e. only appeared on Monday 17th August 2026 for the first time).

With the widget:

• I’ve clicked on the ‘Calculate Export Limit’ (i.e. maximum flow west for each day)
• and scrolled down to highlight the start of non-zero data from 1st October 2026, which is the the anticipated start date for the initial operations (in testing) for the interconnector.

Note the smooth numbers in each of the columns:

• The three columns for Flow at different POE sitting at +150MW (west) or –150MW (east)
• The Calculated Export Limit being +150MW (west) and Calculated Import Limit being –150MW (east)
• and yet the ‘Probability of Binding Export (or Import)’ columns are both sitting at 0%.

For those not so familiar with using the MT PASA data, here’s the similar view for the V-SA interconnector … which currently includes PEC Stage 1, but will revert to being ‘just’ Heywood sometime before PEC is fully operational.

Note the much more dynamic data

Some questions…

Readers should please understand that I am not much beyond trainer wheels as a reader of MT PASA modelling and results.  But am wondering:

Q1)  If there’s something not fully switched on, yet, in terms of how NSW1-SA1 is modelled in the MT PASA weekly supply-demand modelling process?

Q2)  I’m also wondering when it would be that the bump up in V-SA capability (due to PEC Stage 1) will be removed:

(a)  returning that interconnector to be ‘just’ Heywood?

(b)  and bumping the capability of NSW1-SA1

Perhaps some of our more accomplished readers can help me understand … and I’m guessing would also be of interest to others?

PS1 … a short second look

You might also want to refer to the later article ‘One more view of that (first results from) this week’s MT PASA data, relating to PEC Stage 2”.