Assisted mode: keep what you have
The original HEMS keeps controlling its devices, monitored read-only. The power of your other inverters is added as reinforcement, based on what the HEMS is already doing.
Manufacturer HEMS
Is your manufacturer HEMS holding you back? Go further without throwing it away.
Your battery's app does the basics, but it locks you in: one brand, few settings, a limited number of devices. TED takes over, or comes in as reinforcement.
Sounds familiar?
- Your app refuses to add one more device, or one from another brand.
- You cannot choose which battery discharges first.
- No way to fine-tune the grid target, thresholds or power limits.
- Everything depends on the manufacturer's cloud: when it goes down, nothing gets decided.
Why it is hard
A manufacturer HEMS is designed to sell and run one product range, with deliberately simple settings. Depending on brand and model, it limits the number of devices in a group, ignores other brands and only exposes a few parameters.
Those choices make sense for a first device. They become a hurdle as soon as the installation grows: a second battery, another brand, an off-peak tariff, the wish to automate a water heater.
The solution
The features involved
Autonomous mode: full control
Grid power is kept within the band you choose, with profiles (winter, default, summer), by charging and discharging all your batteries.
Fine settings, applied live
Target band, maximum power, battery thresholds per device, priorities: everything is set in the interface and applied immediately.
Local
The software runs at home and talks to Home Assistant on your network: your measurements never leave your home.
No hardware protection or installation rule is bypassed: only setpoints your devices already accept through Home Assistant are sent, within the limits you set. Respect the capacity of your electrical installation and your country's regulations.
Getting it running
- 1
Choose your mode
Assisted to keep the original HEMS, autonomous for full control.
- 2
Declare your devices
Those of the original HEMS as monitored (assisted mode), the others as controlled.
- 3
Set the target band
The grid power you aim for (for example around 0 W) and your power limits.
- 4
Watch, then refine
The dashboard and HEMS page show every regulation decision in real time.
See it working before you install it
The live demo shows the real interface on a working installation: energy flows, inverters, batteries, settings.
Frequently asked questions
Do I lose my battery warranty?
Nothing is installed on your devices: through Home Assistant they receive the same kinds of setpoints their integration already allows. Still, check your manufacturer's warranty terms.
Can I go back?
Yes. Stop the software or switch your inverters to monitored: your original HEMS takes control of its devices again.
Is assisted mode responsive?
Yes: what the original HEMS does is followed continuously, and your other inverters top it up immediately.
Other problems solved
Make several battery and inverter brands work together
Each manufacturer app ignores other brands. Here, they all work together under one setpoint.
Read the solutionA local HEMS for Home Assistant, with no YAML to write
No more dozens of automations: a local, ready-to-use HEMS configured from a web interface.
Read the solutionProtect your solar batteries: thresholds, power limits, faulty devices
Thresholds, maximum power, faulty devices excluded then retested: each battery stays within its limits.
Read the solutionReady to make all your batteries work together?
Free download: your free license arrives as soon as your email address is confirmed, no credit card required.