geoffreycoan
I tend to agree. I think these DFS sessions work well on IOG, not so well on flux. The Octopus ones at £2/kWh+ that is ! Unfortunately last year I missed the £4 one because my batteries were faulty and I missed the 2 hour one because they’d been replaced on that very day and were doing a calibration charge, which I didn’t want to interrupt after waiting 2 months for an engineer 😫.
Last year I just discharged manually to the grid using the app’s quick play button and being able to do so at 8kW I usually pushed out about 7kW+ or so to the grid in an hour. So £14 plus £1.05 for the 15p fixed export; £15.05 total for a £2 session. Not bad. Think I made a total of £150-£200 out of all the sessions. So worth participating.
After each session I had less in the batteries to discharge in the evening or perhaps occasionally I might run out before 23:30 - but no worries importing a small remainder at fixed peak rate, that’s ok as I’d got the max for my DFS export already. Also no point charging the batteries beforehand and incurring unnecessary round trip losses or importing for 26p only to export it later at 15p !
Axle on the other hand would have charged my battery before hand (at peak), which I wouldn’t have wanted (unless I had less than 8kWh left in the batteries).
For 40p/ kW it’s not really worth bothering. And that’s from someone that can push out a lot in an hour! I’d get £2.80. It’s something but not worth losing sleep over.
If I was on a different tariff then I definitely wouldn’t bother. Axle will charge your battery before the event at the expense rate, only pay you 40p/kWh or less for export and then you also run the risk of importing again at a more expensive rate because your battery has run out later in the evening ! If I had a lower export capacity and wasn’t on IOG then it just doesn’t make any financial sense at these lower rates.
Especially if they don’t tell you the rate before hand and then you later find out it’s only 25p !
Seems like Octopus are rightly playing chicken with the DFS. Perhaps if hardly anyone participates in these far lower pay out sessions the DFS will up the rates.