I have to say. I’m satisfied with solcast forecast. Since I started tracking it’s 80% accurate and most of the time I overproduce vs forecast.
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Hi all,
I’ve finally managed to get the mode setting working on the EVO through Home Assistant. I’ve been in contact with Fox ESS support, and after they updated my firmware, everything is now working correctly.
The firmware versions I’m currently running are:
INV_Master: 1.15
INV_Slave: 1.00
INV_Manager: 0.30
AFCI: 0.37
Software: 2.09
BAT_BCU: 1.004
I also had a look at Nathan’s integration. It appears he is in the process of integrating Adam’s changes into his own version, although it doesn’t seem to be fully complete yet.
Brian
I’ve finally managed to get the mode setting working on the EVO through Home Assistant. I’ve been in contact with Fox ESS support, and after they updated my firmware, everything is now working correctly.
The firmware versions I’m currently running are:
INV_Master: 1.15
INV_Slave: 1.00
INV_Manager: 0.30
AFCI: 0.37
Software: 2.09
BAT_BCU: 1.004
I also had a look at Nathan’s integration. It appears he is in the process of integrating Adam’s changes into his own version, although it doesn’t seem to be fully complete yet.
Brian
Great to hear, Brian.
The last firmware update on my machine failed and bricked the Evo. Fox are RMAing me a new unit out. Thankfully we are in warmer months, as I’ve installed a heatpump and peak rate full pelt on that would have hammered me!
Hopefully Fox can ship out the replacement soon. Installer will also install an additional 2 evo units so I can get the full 30kwh battery. Hoping heatpump in winter can be mostly load shifted to off peak.
The last firmware update on my machine failed and bricked the Evo. Fox are RMAing me a new unit out. Thankfully we are in warmer months, as I’ve installed a heatpump and peak rate full pelt on that would have hammered me!
Hopefully Fox can ship out the replacement soon. Installer will also install an additional 2 evo units so I can get the full 30kwh battery. Hoping heatpump in winter can be mostly load shifted to off peak.
Adam,
That’s unfortunate your EVO was bricked. Hopefully you will get your new unit soon, however have you thought about waiting until the next version is released. It supports battery only additions. It may be cheaper than buying two complete units.
I have been considering getting another EVO as I have an export restriction of 3.68kW and my battery is often full by about midday. I have been quoted £5850 for an additional battery. I think it is too expensive. I will wait until the new version is available and if it is cheaper replace my current EVO with a new one and battery, then sell my original one.
I would love to get a heat pump, however my current boiler is only 8 years old and my pipes are 10mm plastic. It would be an expensive upgrade.
Brian
That’s unfortunate your EVO was bricked. Hopefully you will get your new unit soon, however have you thought about waiting until the next version is released. It supports battery only additions. It may be cheaper than buying two complete units.
I have been considering getting another EVO as I have an export restriction of 3.68kW and my battery is often full by about midday. I have been quoted £5850 for an additional battery. I think it is too expensive. I will wait until the new version is available and if it is cheaper replace my current EVO with a new one and battery, then sell my original one.
I would love to get a heat pump, however my current boiler is only 8 years old and my pipes are 10mm plastic. It would be an expensive upgrade.
Brian
Yea it’s a good thought, Brian.
I was hoping the battery add ons would be released already but no sign yet.
Luckily I’m in the industry so the new units are cheap for me.
I was hoping the battery add ons would be released already but no sign yet.
Luckily I’m in the industry so the new units are cheap for me.
Very interesting. My firmware is almost the same only I have inv_manager 1.10 and bat_BCU of 1.001, but I have the 10-10H variant. I've not been able to get work mode or charge periods working yet.BOD wrote: ↑Thu May 07, 2026 9:25 am Hi all,
I’ve finally managed to get the mode setting working on the EVO through Home Assistant. I’ve been in contact with Fox ESS support, and after they updated my firmware, everything is now working correctly.
The firmware versions I’m currently running are:
INV_Master: 1.15
INV_Slave: 1.00
INV_Manager: 0.30
AFCI: 0.37
Software: 2.09
BAT_BCU: 1.004
I also had a look at Nathan’s integration. It appears he is in the process of integrating Adam’s changes into his own version, although it doesn’t seem to be fully complete yet.
Brian
7.34kWh solar array made of 16x Jinko Tiger Neo 460w panels. 8 ESE, 8 WNW facing, Fox EVO 10kWh with 10kW inverter. Installed April 2026. Running ModBus via Elfin EW11A, learning Home Assistant