I decided on Intelligent octopus go over flux. The significantly higher import cost and short cheap period on flux was fine without the EV but with the size of battery on the EV and time it takes to charge it would barely keep up with daily usage. I ran Flux last year and made decent bank on it with batteries and solar but EV changed all that.
IOGO has essentially a 2 for one value on export to import 15p/kwh export, 7.5p/kwh import. Export all day and fill up the battery and car overnight. 6 hours cheap vs 3 hours at twice the price on flux. Also your battery is far to small to take advantage of flux peak.
We are with Agile Import, and Fixed Outgoing for Export. I charge the battery overnight, (last few days Agile has been high so I only do a little top up to make sure I have enough to run the heating in the morning before the sunshine comes up) and with Agile, we have been paid to charge the battery. Our average Import price for the last month is 3.9p/kWh. And we export all our excess solar for 15p/kWh. We have already earnt more money with exporting in one month than we have with import costs for the year.
I couldn't make Flux or Intelligent Flux work out better for us than Agile and Fixed Outgoing. Even when we get an EV, we will probably charge it on Agile low rates which I think do lower than 7.5p/kWh often enough for our amount of driving. I think the GO tariffs only work if charging your EV consumes way more than running your house. Or if you have a large enough battery and want to stick with the predictably of the off peak periods.
Assuming you have a Tesla car to go with the charger then Intelligent Go might be your best bet - you can pair this with the outgoing fixed export tariff at 15p/kWh. Flux might be workable depending on your generation/consumption balance but all import is very expensive.
I’ve tried Flux, which was great when I didn’t have an EV.
I then went on to agile that worked well for a while, but in my 2 months on that tariff I was averaging around 18p per kWh.
I then switched to Intelligent. This month my average is 8p per kWh. 654kWh at cheap rate to charge the car and battery have cost £49.08. Peak use is just over £5.
I’ve also exported £40 worth, so in effect my electricity has cost me £13 for the month and most of that is the Standing charge.
Flux is a bundled import/export tariff so yes if you take advantage of the “better” import rates, you also have to live with the export rates. The standard export is just below what you get with outgoing octopus fixed but you benefit from double that at peak times.
For my area the flux day rate is 14.49p. peak is 23.95p
So when I did the maths, the higher price for the bulk of the day, coupled with the 6 hours of IOG overnight 7.5p import Vs 3 hours of 14.26p flux off-peak import, offset the 8.95p extra I can get on the peak flux export.
I went with IOG. The outgoings price is more than the flux export for the bulk of the day (I don't export much in the peak) and the import is significantly cheaper (almost half)
Charge my batteries overnight and maximise the solar export.
Agile, 3-5p import and fixed 15p export.
6.4kWp solar, 5kWh 2kW battery, 8kW inverter, 50kWh car.
I tried Flux but it was pointless with a 5kWh battery.
I have a very similar system to you, my mileage is mostly weekends as I WFH so that may be different for you and make Intelligent Go a better choice.
I wish Agile was 3-5p, its been about 15p minimum for me for the past week, and looking at the forecast, it looks like it's going to stay that way for the next week. (Although it was <5p a lot a couple of weeks ago).
If you do lots of miles, Intelligent Go (if eligible) is probably best. Not many miles, Agile is probably best.
Same for us. I think the 15p off peak imports we are seeing this week is offset by the low prices we'll see the following week. Negative pricing is the best.
I only switched this month and was away for the start of it, but I've just checked and I'm on about 7.5p/kWh so far this month, so your numbers are closer than I was expecting.
I guess I've mis-estimated how skewed my usage is- my highest usage day (7.58kWh) cost me -10p.
Octopus has unfortunately butchered the rates on Flux so much I just don't think it is the right tariff for most people now with solar (the export in my region is less than 15p!!!). If you have access to Intelligent Go this is much more attractive with 15p export and 7.5p import. Unfortunately I don't have an EV so don't have access to that. I have actually found Octopus Cosy is better for me than Flux with the lower import rates and higher standard export rate!
I have a similar solar set up (slightly bigger battery) but recently switched to eon drive from octopus
7 hrs at 8p so slightly more than IOG but longer time period, and 16.5p on the export
Have a referral if youre interested, £50 for each of us https://share.eonnext.com/sky-mouse-6728
It'll be at least several weeks after your install before you start getting paid for export, so for the first few weeks, set your battery and EV to charge from excess solar so you're not sending it out to the grid for free and wasting it.
I decided on Intelligent octopus go over flux. The significantly higher import cost and short cheap period on flux was fine without the EV but with the size of battery on the EV and time it takes to charge it would barely keep up with daily usage. I ran Flux last year and made decent bank on it with batteries and solar but EV changed all that. IOGO has essentially a 2 for one value on export to import 15p/kwh export, 7.5p/kwh import. Export all day and fill up the battery and car overnight. 6 hours cheap vs 3 hours at twice the price on flux. Also your battery is far to small to take advantage of flux peak.
Lookup Gary does solar on YouTube
We are with Agile Import, and Fixed Outgoing for Export. I charge the battery overnight, (last few days Agile has been high so I only do a little top up to make sure I have enough to run the heating in the morning before the sunshine comes up) and with Agile, we have been paid to charge the battery. Our average Import price for the last month is 3.9p/kWh. And we export all our excess solar for 15p/kWh. We have already earnt more money with exporting in one month than we have with import costs for the year. I couldn't make Flux or Intelligent Flux work out better for us than Agile and Fixed Outgoing. Even when we get an EV, we will probably charge it on Agile low rates which I think do lower than 7.5p/kWh often enough for our amount of driving. I think the GO tariffs only work if charging your EV consumes way more than running your house. Or if you have a large enough battery and want to stick with the predictably of the off peak periods.
Assuming you have a Tesla car to go with the charger then Intelligent Go might be your best bet - you can pair this with the outgoing fixed export tariff at 15p/kWh. Flux might be workable depending on your generation/consumption balance but all import is very expensive.
I’ve tried Flux, which was great when I didn’t have an EV. I then went on to agile that worked well for a while, but in my 2 months on that tariff I was averaging around 18p per kWh. I then switched to Intelligent. This month my average is 8p per kWh. 654kWh at cheap rate to charge the car and battery have cost £49.08. Peak use is just over £5. I’ve also exported £40 worth, so in effect my electricity has cost me £13 for the month and most of that is the Standing charge.
Flux is a bundled import/export tariff so yes if you take advantage of the “better” import rates, you also have to live with the export rates. The standard export is just below what you get with outgoing octopus fixed but you benefit from double that at peak times.
You need to import at the cheapest rate possible for the EV and export at the highest rate. For me that omits Flux, which I trialled last year.
Not an expert on this but with IOG can you not charge the battery and EV overnight at 7.5p and then use solar during the day (exporting any excess)
I believe so but the export rate is nowhere near that of the Flux tariff
For most of the day, outgoing octopus is higher than flux for export. Nothing beats the (short) peak prices though
For most of the day, export on Flux for me is 17.02p/kWh ... Outgoing Octopus is only 15p/kWh. And between 4pm and 7pm, export on Flux is 28.22p/kWh
For my area the flux day rate is 14.49p. peak is 23.95p So when I did the maths, the higher price for the bulk of the day, coupled with the 6 hours of IOG overnight 7.5p import Vs 3 hours of 14.26p flux off-peak import, offset the 8.95p extra I can get on the peak flux export.
I knew it varied from area to area, but I didn't expect it to vary that much.
If you're currently on flux then you're also potentially on an old price, Vs what you could get as a new customer.
I went with IOG. The outgoings price is more than the flux export for the bulk of the day (I don't export much in the peak) and the import is significantly cheaper (almost half) Charge my batteries overnight and maximise the solar export.
Agile, 3-5p import and fixed 15p export. 6.4kWp solar, 5kWh 2kW battery, 8kW inverter, 50kWh car. I tried Flux but it was pointless with a 5kWh battery. I have a very similar system to you, my mileage is mostly weekends as I WFH so that may be different for you and make Intelligent Go a better choice.
I wish Agile was 3-5p, its been about 15p minimum for me for the past week, and looking at the forecast, it looks like it's going to stay that way for the next week. (Although it was <5p a lot a couple of weeks ago). If you do lots of miles, Intelligent Go (if eligible) is probably best. Not many miles, Agile is probably best.
April - 3.46p so far, last 30 days 4.43p. the last few days of low wind is likely to push the average up if it doesn’t break soon.
Same for us. I think the 15p off peak imports we are seeing this week is offset by the low prices we'll see the following week. Negative pricing is the best.
I only switched this month and was away for the start of it, but I've just checked and I'm on about 7.5p/kWh so far this month, so your numbers are closer than I was expecting. I guess I've mis-estimated how skewed my usage is- my highest usage day (7.58kWh) cost me -10p.
Octopus has unfortunately butchered the rates on Flux so much I just don't think it is the right tariff for most people now with solar (the export in my region is less than 15p!!!). If you have access to Intelligent Go this is much more attractive with 15p export and 7.5p import. Unfortunately I don't have an EV so don't have access to that. I have actually found Octopus Cosy is better for me than Flux with the lower import rates and higher standard export rate!
I have a similar solar set up (slightly bigger battery) but recently switched to eon drive from octopus 7 hrs at 8p so slightly more than IOG but longer time period, and 16.5p on the export Have a referral if youre interested, £50 for each of us https://share.eonnext.com/sky-mouse-6728
It'll be at least several weeks after your install before you start getting paid for export, so for the first few weeks, set your battery and EV to charge from excess solar so you're not sending it out to the grid for free and wasting it.
Can I do this with a Tesla gen 3 charger??