Product Update – ISO Prices by Hub

Posted on by William Griswold

Good Day,

We have added a couple more views, By Hub, to our ISO Price reports. This provides a convenient way to view congestion. You can view three markets:

  • Day Ahead (DA)
  • Hour Ahead (HA)
  • Real-Time (RT)

For seven locations:

  • ISO
  • SP15
  • NP15
  • Mid-C (average of BPAT, PACW, and PSEI)
  • Palo Verde (AZPS)
  • Great Basin (average of NEVP and PACE)
  • Rockies (PNM)

Each report provides three aggregation levels:

  • Interval – the base level reported by that market; for RT it is every 5 minutes; HA is every 15 minutes; DA is hourly. (last 3 days)
  • Hourly – average of all intervals by hour (last 15 days)
  • Daily – aggregated into on and off peak (last 90 days)

Pictures say it best, some examples follow:

Hour Ahead, All Hubs, Interval Aggregation

000-byhub-ha

Clearly the Mid-C is rocking and rolling at the moment (why did we sell our BOM on peak?); let’s compare this market to just NP15:

000-byhub-ha-1

Actually that off-peak we kept on the books did quite well as many of the ticks were north of $100. Just how good? Zoom in and find out:

000-byhub-ha-2

Comparing locations to the inside-ISO markets can lead to some interesting observations. For example, let’s look at the Day Ahead market by hub for the last couple of days:

000-hourly-da

Mid-C performed terribly, big congestion into the ISO, at least on the DA market; how about the HA?

000-hourly-ha

Ooops, if your guys sold your length DA they left some pennies on the table, more like C Notes. Note the massive MC to PV congestion over the last several hours; those prices were reversed in the DA market.

All of our ISO Price reports include the imbalance markets, in case you care

MW, Interval, All Hubs

000-byhub-mw-2

In this example we plotted the energy flows by interval for all hubs; the plot is hard to read, so turn off the hubs you want to exlcude by clicking the legend.

000-byhub-mw-1

Now we see just the ISO’s net energy flows by five-minute tick. Recall from an earlier product update that you can easily compare DA to HA.

000-bymrkt-ha

In this example, we are plotting the DA vs HA prices for PACW on an hourly basis.

For the record, these plots look great in a dashboard where you place 4-6 of them, side by side. Let us know if you need some help setting those up.

Team Ansergy