Outgoing export on Octopus going down

debitcardmayhem

https://forums.moneysavingexpert.com/discussion/comment/81889243#Comment_81889243

Intelligent Octopus Flux probably/possibly might make more sense , but only in net export months , and you can't model import/export costs easily with agile.

Qyburn

I was already planning to jump onto IOF later in the Spring. A bit a leap of faith since you're handing control over to Octopus but after a very flakey start I hope the Solaredge integration has settled down.

debitcardmayhem

https://forums.moneysavingexpert.com/discussion/comment/81889281#Comment_81889281

It worked ok for me with GE batteries last year, if this March is anything like last year (not looking likely) I would switch on the 1/03/26, I was later than that last year. I will probably switch then anyway

NedS

https://forums.moneysavingexpert.com/discussion/comment/81889240#Comment_81889240

It was intended to be a very simple example to illustrate the point. Feel free to refine the example to fit your own use case.

Simple fact is the wider the margin between the import price and the export value of solar, the more beneficial it becomes to self-consume your generated solar or to store it for later self-consumption. The greater the financial benefit of storage and subsequent self-consumption, the shorter the payback period on a battery.

The above holds true for cases where import price is above export rates, such as for customers on SVR and SEG export. Other tariffs are available.

NedS

https://forums.moneysavingexpert.com/discussion/comment/81889318#Comment_81889318

March was exceptional last year for solar generation.

Based on our usage and PVGIS predictions, end of March / beginning of April is the crossover point for us to switch from Cosy to IOF. We will keep an eye on the 14 day forecast and look to switch around that time when the forecast looks favourable (ie, sunny, and not too cold). Heat pump usage is also a consideration for us in addition to solar generation.

Still pondering what may be the best tariff for the month of March, and whether it's worth switching from Cosy for 1 month before jumping on IOF.

debitcardmayhem

https://forums.moneysavingexpert.com/discussion/comment/81889585#Comment_81889585

Until the decrease was announced I was planning switching on 21st of March , equinox basically. Now it's spend time watching the weather long range f/c and maybe take a chance on the 1st otherwise will probably stick with cosy, but I could try agile and home assistant but that seems too much brain scratching.

If I find a reliable crystal ball I'll let you know 🔮

Qyburn

Not quite convinced I have the logic correct, but let's have a try. IOF import and export rates are both higher than my current tariffs. But since my current import rate is lower than export, it's not quite as simple as IOF being better as soon as export exceeds import.

NibblyPig

https://forums.moneysavingexpert.com/discussion/comment/81889001#Comment_81889001

FYI this is not correct, transmission costs come mostly from the standing charge.

Although it looks benevolent that you buy for 7p and sell for 12p, timing is everything - and they benefit by a) encouraging you to not use power at 5pm when it costs them 70p/unit or more, and b) by charging you more during the day (no need to do that, but hey why not)

During the day, I buy mine at 30.5p but they buy mine at 15p… well… going down to 12p.

So I generate 1kw of power, I get 12p, they get 18p? It's my solar array and inverter that are generating it.

Last year I exported 5200kw, so under the new pricing, my solar power gives me £624 and they get £936, and I'm the one that pays for it…

Magnitio

https://forums.moneysavingexpert.com/discussion/comment/81889941#Comment_81889941

What tariff are you on that you pay 30.5p? If you are on a normal tariff, you pay the same rate throughout the day regardless of the time. That means you are often paying less than the cost during peak periods and more than the cost at off-peak. It's an average price. When you are exporting solar, your export will likely reach its peak in the hours around midday when the cost is low, but you are still expecting to be paid a high price for it. If you really don't want average prices for purchasing and selling electricity, then you can always choose an Agile tariff.

Qyburn

https://forums.moneysavingexpert.com/discussion/comment/81889941#Comment_81889941

During the day, I buy mine at 30.5p but they buy mine at 15p… well… going down to 12p.

So I generate 1kw of power, I get 12p, they get 18p? It's my solar array and inverter that are generating it.

Where are you getting the "they get" figure from? Are you assuming that they're buying your export at 12p and selling it to another customer at 30p?