Sun, grid, battery and car: one balance.
Four devices, often from four makes. In Lenou they are one daily curve and one plan, worked out again every quarter of an hour.
What it is
A house that makes its own power gets four systems at once: the inverter, the meter, the battery and the charger. Often from four makes, with four apps and four ideas of what "consumption" is.
Lenou reads them all and makes one balance of them: sun, house, grid, battery and car, on one daily curve. And because it sees everything at once, it can also control: the battery, the charger and the heat pump follow one plan.
What Lenou reads and controls
SMA
SMA inverters, battery inverter and charger, each over the local way the device offers.
- Sunny Boy
- Over Modbus TCP: power and yield; on a Sunny Boy Smart Energy also the panels separately and the battery's charging and discharging. Read only.
- Older Sunny Boy
- Without Modbus, through the local Webconnect interface. Read only.
- Sunny Island
- State of charge and power, and control: charge from the grid, normal self-consumption, or hold.
- SMA EV Charger
- Over the local ennexOS API: status, power, session. Start, stop and set the charging current once the installer hands Lenou that knob.
Sigenergy SigenStor
The whole plant over Modbus TCP: grid, panels and battery.
- Reads
- Import and export with their counters, what the panels yield, the battery's state of charge and power, and what the battery can take at most.
- Controls
- Charging and discharging at a given power, through the remote EMS mode. When Lenou lets go, the plant falls back to maximum self-consumption.
SunSpec inverters
One integration for everything that speaks SunSpec over Modbus TCP: Huawei SUN2000, SolarEdge, Fronius, GoodWe, SMA and Kostal.
- Reads
- The inverter's power, yield and status; the meter behind it; a battery's state of charge.
- Limit
- Read only: control means each make's own registers. For Huawei and GoodWe the settings have not yet been checked on a device.
HomeWizard
The P1 meter on the digital meter, the kWh meters and the Energy Socket, over their local API.
- Reads
- Import and export, per phase, and the quarter-hour average and monthly peak of the capacity tariff.
- Controls
- The Energy Socket on and off.
- Limit
- The local API has to be on in the HomeWizard app. Gas and water are not included.
Meters
Sub-meters per circuit or per device.
- Modbus
- Eastron SDM630, and Carlo Gavazzi EM340 (the latter not yet checked on a device).
- Elsewhere
- Shelly EM, KNX counters, and what a charger or heat pump reports itself.
Smappee
Smappee's energy monitors: Infinity, Genius and the EV Wall.
- Which route
- Planned over Smappee's local MQTT, where the device offers it; otherwise over Smappee's cloud API.
- Why in progress
- A Lenou driver for Smappee is being built now. What it reads and controls will be listed here only once it has been checked on a real device.
Chargers over OCPP
Lenou is the server itself: the charger calls the box. Alfen, Wallbox, Zaptec, Easee and most others that speak OCPP 1.6.
- Reads
- Status, power and the energy of the running session.
- Controls
- The charging current, start and stop. Which charging cards may charge can be limited.
- Limit
- OCPP 1.6J without TLS; no OCPP 2.0.1. Whether a charger accepts 0 A as a pause differs per make and has not been checked per make.
Phoenix Contact CHARX SEC
The charge controller inside many chargers, over Modbus TCP.
- Reads and controls
- Status per charging point, power, session and charging current; setting the current, releasing and stopping charging.
Tap Electric
The platform some chargers are managed on.
- Reads
- Status, charging sessions and what they cost.
- Controls
- Start, stop and charging current, through Tap. If the same charger also sits locally in the house, the two become one tile.
- Limit
- Some chargers need a paid licence at Tap to set the charging current. Then that stays with the charger.
Tesla Wall Connector
Tesla's charger, generation 3, over its local API on the home network.
- Reads
- Whether a car is plugged in and charging, the power and the current per phase, the energy of the session and the temperature. Every session is kept.
- Limit
- The charger has no local command to start, stop or limit the current. A Tesla itself can be controlled through the car.
What that means in the app
- One balance. Sun, house, grid, battery and car on one daily curve, whichever make measures.
- The battery follows the plan. Every quarter of an hour Lenou works out what the battery does: from the solar forecast, what this house usually uses in the same hours, and tomorrow's prices through its own contract. If there are devices that can wait — a pool pump, a heat pump, the car — they are planned together with the battery.
- The quarter-hour peak stays under the bar. The car and the battery take the capacity tariff into account. With a HomeWizard P1, Lenou works with what still fits in the running quarter.
- The car charges the way you ask. Full power, on solar surplus only, a fixed current, or cheapest by a given hour: "full by seven" in the cheapest hours before it.
- The heat pump follows the tariff. See the brief Heating and climate.
Honest limits
- Controlling a battery works today on a SigenStor and an SMA Sunny Island, and on any battery for which a profile says how. A SunSpec battery is only read.
- Two controllers on one knob is worse than none. If another system already controls the charger or the battery, Lenou takes that knob only once the other one has let go.
- On an SMA EV Charger the "solar charging" mode itself cannot be written; Lenou does it with the charging current.
- The weather forecast and the day-ahead prices come from the internet. If that drops, the plan carries on with the last forecast.