Use Octopus Agile Export Prices to Influence Export Slots on Outgoing Octopus Fixed Price Export Tariff

[hnb2907]

Hi,

Hope someone can clarify how to do this please?

I'm on Octopus Agile Import, and Fixed Outgoing Octopus export tariffs.
Predbat is making a fantastic job of planning my solar+batteries :)

I noticed that over the past week, when Agile Import prices have been "excellent", and predbat has been making great use of this to charge/discharge my batteries and is earning a few £'s in the process.

What I'd like to do, is to use the Agile Export prices to influence predbat's decision of when to export. So the brown energy is more likely to be exported when the grid would benefit from it.

If I change my defined export tariff in predbat to use the Agile Export prices, then all of the price calculations/graphs will be incorrect, compared to the reality of being on Outgoing Octopus.
I had a look at the predbat API, to overide the export hourly rates, but I think this also affects the predbat price calculations/graphs? And to be honest, I'm not entirely sure how to write an automation/script to download the Agile Export prices and poke them into the API.

What do you think, is this possible?

Cheers,
Chris.

[gcoan]

Have you tried the carbon option in predbat? This takes grid carbon levels into account so can prioritise export when the grid needs it most.

This is not 100% aligned to Agile export rates but might be a good proxy

[hnb2907]

Hi gcoan, thanks for the quick reply.

Yes I had a read through the documentation for the carbon option, and did consider it, mainly because it's a lot easier to configure for a someone that isn't an expert programmer!

Knowing a reasonable amount about the grid, and having an Engineering background in an allied industry; I'd prefer to bias my export in alignment with the higher Agile export prices. Having investigated this over a number of years, I believe it is a better representation of grid demand, rather than potentially questionable carbon figures. One of these reflects the finances of supply-vs-demand, the other I'm less likely to believe :)

Just heading back to a previous question... Does the rate overrides sent via the API affect the cost calculations and graphs, or does it still calculate these based on the original rate before override?

Cheers,
Chris.

[gcoan]

You can either use the predbat REST API or the Automation API to override your apps.yaml configuration.

The latter is possibly easier to do as you can specify start/end times for rates. There's an example using the API in the documentation, it is used to override house load but can equally be used to set an import or export rate override - e.g. cut price for the next hour.

https://springfall2008.github.io/batpred/manual-api/#example-solution-to-over-ride-predicted-house-load

Any such overrides of predbat rates will change the rate used in the plan and cost calculations, you'll see the new rate with a +/- symbol next to it

[WyndStryke]

I seem to recall it is also possible to tweak the prices using the nordpool integration (although I don't think that includes the UK wholesale prices)? Maybe you could ingest the agile prices, and put it into the nordpool entity format, or perhaps use the export rate override functionality.