5 min intervals ? Is it hidden somewhere ?

[craigcurtin-dev]

Myles,

WIth the publicly available API - i used to access the 5 min spot prices through Node Red - i have been using these to model the cost effectiveness of a battery system and feeding back into the grid.

We are about to pull the pin on getting our battery solution but i note the 5 minute prices seem to have disappeared (although the examples on the developer page do seem to show them when getting the current price) - i have tried to change the interval to 5 rather than 30 - but that seems to be ignored at this point.

I have dug through the full dailylisting and it does not appear to be in there either - everything is 30min intervals ?

Craig

[madpilot]

Correct - the API only supports 30-minute intervals at the moment, and we won't support true 5-minute intervals until 5-minute dispatch comes into play

I assume when talking about the old API, you mean intervals that had a source of 5MIN? Those aren't the current 5-minute spot price, they are the average of all the 5-minute actuals and the 30-minute forecast weighted by the network demand for those periods.

The new API does the same thing, except it takes the 5-minute forecast into consideration. This is why the price changes every 5-minutes, even though we bill in 30-minute increments.

So, it's the same thing as you had before, except it responds a little bit quicker.

[craigcurtin-dev]

Aaah - that does explain it - my assumption was that Min would be the current rolling avg of priceKwh - you are however saying their is some other magic sauce in the calcs for Min and Max

I understand what you are saying - but not sure the reasoning behind it - but at least i know which i can trust at this point.

Craig

[madpilot]

The point of the min and max number are to show volatility. It's confusing and we're reviewing at the moment.

But from an API point of view it can still be interesting.

AEMO published the results of their 100 or so models that they use to predict the price. We effectively take the max and min of those for our ranges. The current price range is a little more complicated as it takes previous and next max values in to account too, but ultimately it's a good indicator that the AEMO models are disagreeing so expect the price to be a bit all over the shop.

[tjhowse]

So am I correct in thinking that starting 2021-10-01 we'll see 'duration': 5 interval responses to prices/current calls? If so, exciting times!

[madpilot]

Not unless you specifically request it. If you omit the resolution query param will still get 30-minute data back.

[madpilot]

Not sure if there is weird threading going on, but I'll post this explanation of the current state of play for 5-minute dispatch just in case: #65 (reply in thread)