Continuous regulation
Every few seconds: meter reading, decision (charge, discharge or standby), then setpoints sent to the inverters.
Self-consumption
Stop exporting your solar surplus only to buy it back in the evening
TED continuously measures what the house imports or exports, then charges or discharges your batteries to stay as close as possible to the target you choose, for example 0 W.
Sounds familiar?
- Your meter runs backwards at noon while your batteries are not full.
- In the evening the house imports while the batteries are still charged.
- Your self-consumption rate stalls despite adding batteries.
Why it is hard
Self-consumption depends on how fast and how accurately you regulate: you have to follow the house's consumption continuously, and it changes with every appliance switched on.
With several batteries it is even trickier: power has to be shared without exceeding each one's limits, and without them fighting each other.
TED
What TED does
Custom target band
Choose the grid power you aim for and its tolerance, with winter, default and summer profiles.
Every watt in the right place
Surplus goes first to the emptiest batteries; the house draws first from the fullest.
Dashboard
Real-time view, daily charts and energy flows: you see what each battery absorbed and returned.
Getting it running
- 1
Connect your meter to Home Assistant
A grid power sensor (import and export), or a Shelly in your consumer unit.
- 2
Add your batteries in TED
As controlled inverters, with their maximum power.
- 3
Switch to autonomous mode
And choose your target band, for example around 0 W.
See it working before you install it
The live demo shows TED's real interface on a working installation: energy flows, inverters, batteries, settings.
Frequently asked questions
Does TED guarantee zero export?
TED aims for the band you choose and reacts within seconds. When all batteries are full or at their maximum power, the remaining surplus goes to the grid (or to loads you switch on with automations).
What happens when the batteries are empty?
They stop at their minimum level and the house imports as usual. In winter you can recharge them during off-peak hours with scheduled charging.
Other problems TED solves
Use your solar surplus: water heater, smart plugs, scripts
Batteries full, surplus exported: TED switches on your water heater, plugs or Home Assistant scripts following your rules.
Read the solutionCharge your batteries from the grid during off-peak hours
Little sun in winter: TED recharges your batteries off-peak so you can use them at peak times.
Read the solutionMultiple batteries oscillating or passing energy back and forth
Each battery corrects the meter on its own and fights the other. TED computes one setpoint for all of them.
Read the solutionReady to make all your batteries work together?
Download TED for free: your license is generated instantly, no credit card required.