This is the output from Predbat, which manages the house battery (9.5kwh GivEnergy v3). The column next to the day and time is the unit charge for electrify I pay using the Agile tariff from Octopus. It’s billed every 30mins and is a green energy tariff. You can see that at 13:30 it goes negative
March 29, 2026 at 11:15 AM
This is the output from Predbat, which manages the house battery (9.5kwh GivEnergy v3). The column next to the day and time is the unit charge for electrify I pay using the Agile tariff from Octopus. It’s billed every 30mins and is a green energy tariff. You can see that at 13:30 it goes negative
Running costs are on Agile with a 9kWh battery predbat managed. Here's alternative costs without a battery:
- Flat-rate electric price cap: £1000/yr = 50% saving oil
- Agile no battery, no load shifting: £825 = 60% saving oil
- Agile demand-shifting : £690 = 66% saving oil
- Flat-rate electric price cap: £1000/yr = 50% saving oil
- Agile no battery, no load shifting: £825 = 60% saving oil
- Agile demand-shifting : £690 = 66% saving oil
July 29, 2026 at 11:50 PM
Running costs are on Agile with a 9kWh battery predbat managed. Here's alternative costs without a battery:
- Flat-rate electric price cap: £1000/yr = 50% saving oil
- Agile no battery, no load shifting: £825 = 60% saving oil
- Agile demand-shifting : £690 = 66% saving oil
- Flat-rate electric price cap: £1000/yr = 50% saving oil
- Agile no battery, no load shifting: £825 = 60% saving oil
- Agile demand-shifting : £690 = 66% saving oil
This ^^ @tomtaylor.co.uk showed me his predbat implementation - super impressive.
November 24, 2024 at 1:03 PM
This ^^ @tomtaylor.co.uk showed me his predbat implementation - super impressive.
May 2026
Fully electric 1930s semi. No gas.
Solar: 610 kWh
Heat pump: 149 kWh
EV charging: ~1,000 miles
94% off-peak
Final bill: ~£24
We used lots of energy. We bought it cheaply, shifted it and exported well via Predbat, IOG & Agile export.
youtu.be/gIw0Fm4HpAU
Fully electric 1930s semi. No gas.
Solar: 610 kWh
Heat pump: 149 kWh
EV charging: ~1,000 miles
94% off-peak
Final bill: ~£24
We used lots of energy. We bought it cheaply, shifted it and exported well via Predbat, IOG & Agile export.
youtu.be/gIw0Fm4HpAU
£24 Full House Bill for May 2026: Solar, Heat Pump & 1000 EV Miles
YouTube video by Mick Wall (Energy Stats UK)
youtu.be
June 5, 2026 at 9:59 AM
May 2026
Fully electric 1930s semi. No gas.
Solar: 610 kWh
Heat pump: 149 kWh
EV charging: ~1,000 miles
94% off-peak
Final bill: ~£24
We used lots of energy. We bought it cheaply, shifted it and exported well via Predbat, IOG & Agile export.
youtu.be/gIw0Fm4HpAU
Fully electric 1930s semi. No gas.
Solar: 610 kWh
Heat pump: 149 kWh
EV charging: ~1,000 miles
94% off-peak
Final bill: ~£24
We used lots of energy. We bought it cheaply, shifted it and exported well via Predbat, IOG & Agile export.
youtu.be/gIw0Fm4HpAU
PredBat Explained | Save More With Your Home Battery
I speak to Richard Eyres from Predbat about set-and-forget battery automation, solar forecasting, Intelligent @octopus.energy Go, Axle Energy, @givenergy.bsky.social support and the future of home energy control.
www.youtube.com/watch?v=7Yow...
I speak to Richard Eyres from Predbat about set-and-forget battery automation, solar forecasting, Intelligent @octopus.energy Go, Axle Energy, @givenergy.bsky.social support and the future of home energy control.
www.youtube.com/watch?v=7Yow...
PredBat Explained | Save More With Your Home Battery
YouTube video by Mick Wall (Energy Stats UK)
www.youtube.com
July 12, 2026 at 1:15 PM
PredBat Explained | Save More With Your Home Battery
I speak to Richard Eyres from Predbat about set-and-forget battery automation, solar forecasting, Intelligent @octopus.energy Go, Axle Energy, @givenergy.bsky.social support and the future of home energy control.
www.youtube.com/watch?v=7Yow...
I speak to Richard Eyres from Predbat about set-and-forget battery automation, solar forecasting, Intelligent @octopus.energy Go, Axle Energy, @givenergy.bsky.social support and the future of home energy control.
www.youtube.com/watch?v=7Yow...
Is anyone else using PredBat?
It's an astonishing piece of free software than can control the charging & discharging of your battery based on various inputs; solar forecast, carbon intensity, tariff pricing (import & export), in house usage and much more.
I finally got it set up over the weekend.
It's an astonishing piece of free software than can control the charging & discharging of your battery based on various inputs; solar forecast, carbon intensity, tariff pricing (import & export), in house usage and much more.
I finally got it set up over the weekend.
May 12, 2025 at 8:09 AM
Is anyone else using PredBat?
It's an astonishing piece of free software than can control the charging & discharging of your battery based on various inputs; solar forecast, carbon intensity, tariff pricing (import & export), in house usage and much more.
I finally got it set up over the weekend.
It's an astonishing piece of free software than can control the charging & discharging of your battery based on various inputs; solar forecast, carbon intensity, tariff pricing (import & export), in house usage and much more.
I finally got it set up over the weekend.
It’s amazing what a little bit of sunshine can do. We’re actually exporting again. We did a bit last week too, mainly because we weren’t here. This week is the first week proper we’re exporting electricity, and it’s still February. #solar
February 24, 2026 at 5:54 PM
It’s amazing what a little bit of sunshine can do. We’re actually exporting again. We did a bit last week too, mainly because we weren’t here. This week is the first week proper we’re exporting electricity, and it’s still February. #solar
Oooooh nice stuff mate - and I *strongly* recommend setting up a Home Assistant system / Predbat / Solcast to automate the whole thing of when to export / when to charge - it's a game changer.
April 21, 2026 at 6:29 AM
Oooooh nice stuff mate - and I *strongly* recommend setting up a Home Assistant system / Predbat / Solcast to automate the whole thing of when to export / when to charge - it's a game changer.
GivEnergy Local Control Tutorial - Including Remote Access
This is a long one guys sorry but should help beginners set up a Raspberry Pi to manage GivEnergy inverters locally
youtu.be/rHSI4oTZyTI
#GivEnergy #HomeAssistant #GivTCP @home-assistant.io #PredBat
@raspberrypi.com
This is a long one guys sorry but should help beginners set up a Raspberry Pi to manage GivEnergy inverters locally
youtu.be/rHSI4oTZyTI
#GivEnergy #HomeAssistant #GivTCP @home-assistant.io #PredBat
@raspberrypi.com
GivEnergy Local Control Tutorial - Including Remote Access (2026) - BEGINNER FRIENDLY!
This video is a full end-to-end tutorial on how to configure a Raspberry Pi and Home Assistant to control and monitor your GivEnergy batteries and inverters without the use of the GivEnergy cloud or…
youtu.be
April 10, 2026 at 5:00 PM
GivEnergy Local Control Tutorial - Including Remote Access
This is a long one guys sorry but should help beginners set up a Raspberry Pi to manage GivEnergy inverters locally
youtu.be/rHSI4oTZyTI
#GivEnergy #HomeAssistant #GivTCP @home-assistant.io #PredBat
@raspberrypi.com
This is a long one guys sorry but should help beginners set up a Raspberry Pi to manage GivEnergy inverters locally
youtu.be/rHSI4oTZyTI
#GivEnergy #HomeAssistant #GivTCP @home-assistant.io #PredBat
@raspberrypi.com
I just let Predbat sort it all for me now.
March 17, 2026 at 6:33 PM
I just let Predbat sort it all for me now.
Yes. These are silly money at the moment. I’m hoping they’ll get a lot cheaper in time. I use Predbat to manage my battery which has saved about £100 on top of the battery savings of around £700 plus the solar which pretty much zeros our electricity bill.
September 17, 2026 at 5:32 PM
Yes. These are silly money at the moment. I’m hoping they’ll get a lot cheaper in time. I use Predbat to manage my battery which has saved about £100 on top of the battery savings of around £700 plus the solar which pretty much zeros our electricity bill.
@jamestplunkett.bsky.social Home Assistant and Predbat springfall2008.github.io/batpred/what... are the DIY solutions. Also believe Octopus Intelligent tariffs work with GivEnergy systems to automate import/export
What does Predbat do? - Predbat Documentation
springfall2008.github.io
September 24, 2024 at 6:56 AM
@jamestplunkett.bsky.social Home Assistant and Predbat springfall2008.github.io/batpred/what... are the DIY solutions. Also believe Octopus Intelligent tariffs work with GivEnergy systems to automate import/export
Admittedly it took a lot to get to this point, but all the tools I use have become easier to set up since then too.
The key tool here is Predbat - an epic system that optimises home energy around your tariffs, and can compare with other tariffs too!
It’s how I knew I should change now 👍
The key tool here is Predbat - an epic system that optimises home energy around your tariffs, and can compare with other tariffs too!
It’s how I knew I should change now 👍
May 20, 2026 at 5:52 PM
Admittedly it took a lot to get to this point, but all the tools I use have become easier to set up since then too.
The key tool here is Predbat - an epic system that optimises home energy around your tariffs, and can compare with other tariffs too!
It’s how I knew I should change now 👍
The key tool here is Predbat - an epic system that optimises home energy around your tariffs, and can compare with other tariffs too!
It’s how I knew I should change now 👍
Predbat running onh Home Assistant, controlling the battey via GivTcp, but setting a forced export between 6pm-7pm would have most of the same benefit, the Agile pattern is mostly the same each day, this is tomorrow
September 14, 2026 at 10:50 PM
Predbat running onh Home Assistant, controlling the battey via GivTcp, but setting a forced export between 6pm-7pm would have most of the same benefit, the Agile pattern is mostly the same each day, this is tomorrow
This is maybe the 5th or 6th negative cost period in the last 5 weeks. You really get the benefit if you can set timers to accommodate this. If you’re even a little bit technical, I strongly urge you to look at Predbat as a battery manager.
April 22, 2026 at 9:48 AM
This is maybe the 5th or 6th negative cost period in the last 5 weeks. You really get the benefit if you can set timers to accommodate this. If you’re even a little bit technical, I strongly urge you to look at Predbat as a battery manager.
Yes. Managing PV, battery & EV charger. Also running the PredAI plugin to better predict my house load. All in all, Predbat has probably saved/generated me an additional £500 over the year. It’s brilliant.
I only wish my ASHP was smarter so that I could integrate that as well!
I only wish my ASHP was smarter so that I could integrate that as well!
May 12, 2025 at 8:26 AM
Yes. Managing PV, battery & EV charger. Also running the PredAI plugin to better predict my house load. All in all, Predbat has probably saved/generated me an additional £500 over the year. It’s brilliant.
I only wish my ASHP was smarter so that I could integrate that as well!
I only wish my ASHP was smarter so that I could integrate that as well!
I'm moving house relatively soon, so it won't be my problem luckily.
I've got home assistant too, and I've got predbat up and running. I only used remote access to tweak charging slots when I wasn't at home, and predbat can do that for me.
Shame about axle though, that was money for old rope.
I've got home assistant too, and I've got predbat up and running. I only used remote access to tweak charging slots when I wasn't at home, and predbat can do that for me.
Shame about axle though, that was money for old rope.
May 5, 2026 at 9:48 AM
I'm moving house relatively soon, so it won't be my problem luckily.
I've got home assistant too, and I've got predbat up and running. I only used remote access to tweak charging slots when I wasn't at home, and predbat can do that for me.
Shame about axle though, that was money for old rope.
I've got home assistant too, and I've got predbat up and running. I only used remote access to tweak charging slots when I wasn't at home, and predbat can do that for me.
Shame about axle though, that was money for old rope.
You can manage it manually, but it’s better to have it integrate with your inverter. I use Predbat to manage it. There is a paid for service predbat.com, but you can set it up locally and manage it yourself for free, I actually donate, it’s amazing and saves me money daily github.com/springfall20...
PredBat
>Effortless Energy Management
www.predbat.com
April 22, 2026 at 5:40 PM
You can manage it manually, but it’s better to have it integrate with your inverter. I use Predbat to manage it. There is a paid for service predbat.com, but you can set it up locally and manage it yourself for free, I actually donate, it’s amazing and saves me money daily github.com/springfall20...
Then diving into my smart home stuff putting energy automation in place using ‘Predbat’.
It integrates energy use and solar generation predictions, then combines it with tariff info to map the best energy execution plan. Mostly operating locally on my little device 🤓
It integrates energy use and solar generation predictions, then combines it with tariff info to map the best energy execution plan. Mostly operating locally on my little device 🤓
December 27, 2024 at 12:07 AM
Then diving into my smart home stuff putting energy automation in place using ‘Predbat’.
It integrates energy use and solar generation predictions, then combines it with tariff info to map the best energy execution plan. Mostly operating locally on my little device 🤓
It integrates energy use and solar generation predictions, then combines it with tariff info to map the best energy execution plan. Mostly operating locally on my little device 🤓
springfall2008.github.io/batpred/
Currently supports lots of different battery inverters:
- GivEnergy Hybrid, AC and AIO
- Solis
- Solax
- Sunsynk
- Huawei
- SolarEdge
- Fox
- Sofar
- LuxPower
- Solar Assistant
Currently supports lots of different battery inverters:
- GivEnergy Hybrid, AC and AIO
- Solis
- Solax
- Sunsynk
- Huawei
- SolarEdge
- Fox
- Sofar
- LuxPower
- Solar Assistant
Predbat Documentation
None
springfall2008.github.io
May 12, 2025 at 8:09 AM
springfall2008.github.io/batpred/
Currently supports lots of different battery inverters:
- GivEnergy Hybrid, AC and AIO
- Solis
- Solax
- Sunsynk
- Huawei
- SolarEdge
- Fox
- Sofar
- LuxPower
- Solar Assistant
Currently supports lots of different battery inverters:
- GivEnergy Hybrid, AC and AIO
- Solis
- Solax
- Sunsynk
- Huawei
- SolarEdge
- Fox
- Sofar
- LuxPower
- Solar Assistant
I’m finding it interesting to see the tracking of CO2 emissions for my home from Predbat.
Today has been around 1.5 kg of CO2, and tomorrow is projected to add just 0.4 kg more!
Plenty of wind tonight 🤓
Today has been around 1.5 kg of CO2, and tomorrow is projected to add just 0.4 kg more!
Plenty of wind tonight 🤓
December 29, 2024 at 11:27 PM
I’m finding it interesting to see the tracking of CO2 emissions for my home from Predbat.
Today has been around 1.5 kg of CO2, and tomorrow is projected to add just 0.4 kg more!
Plenty of wind tonight 🤓
Today has been around 1.5 kg of CO2, and tomorrow is projected to add just 0.4 kg more!
Plenty of wind tonight 🤓