Grid connection
The grid connection is the import/export meter of your home and the price baseline for every cost and savings calculation. Exactly one grid connection is required per energy mix — if you have two grid connections, model them as two separate config entries.
Add it with Add device → Grid connection.
Settings
Power sensor
Sensor with the grid power in W, kW or MW. Positive = import, negative = export.
This is the only always-required field. It must report instantaneous power (not energy). Power Insight normalises W / kW / MW automatically.
Invert power sign
Turn on if your sensor uses the opposite sign.
Use this when your meter reports import as negative (or export as positive).
Electricity price
Sensor or number with the current price per kWh you pay for grid power. Required for cost, savings and financial return sensors.
This can be a live/dynamic price sensor (for example from a dynamic-tariff
integration) or a static input_number. Because Power Insight uses the current
value at every calculation, dynamic tariffs are fully supported.
The sensor must report a price per unit of energy as its unit of
measurement. EUR/kWh, €/kWh, ct/kWh, EUR/MWh and EUR/Wh (or the same
in any other currency) are all converted to a price per kWh; a sensor in any
other unit — or with no unit at all — is refused, because taken at face value
a ct/kWh tariff would make every cost a hundred times too large. An
input_number needs its unit of measurement set accordingly.
Power Insight does not convert currencies. If the price names a currency other than the one Home Assistant is set to, a repair issue says so.
Grid CO₂ intensity
Sensor with the grid's current CO₂ intensity in g/kWh (e.g. from Electricity Maps). Optional; reserved for CO₂ sensors.
CO₂ sensors are not implemented yet, so this field currently has no effect. It is safe to leave empty.
Already accumulated
Optional, in two sections. Energy (kWh): what the whole home exported to the grid and the average grid tariff over that period — your PV systems' and batteries' savings are calculated with this tariff, unless a device has its own. Amounts: the whole home's total savings and export compensation from your app. Both are split between your PV systems and batteries. See Carried-over history.
Sensors
Turn these on in the integration's Options → Grid sensors. Import and export both happen at your grid connection, so this one device carries both sides of the meter.
Power flow
Import and export
How much power you are buying from the grid right now, and how much surplus you are selling back. Only one of the two is above 0 at any moment.
| Sensor | Unit | Turn on with |
|---|---|---|
| Import power | W | Power split (W) |
| Export power | W | Power split (W) |
Where the import goes
Splits the grid import by what it is used for: your appliances, charging a battery, or the idle draw of your energy equipment. The ratio sensors show the same split as a percentage of the import.
The batteries sensors only exist when at least one battery is allowed to charge from the grid.
| Sensor | Unit | Turn on with |
|---|---|---|
| Import to home consumption | W | Power split (W) |
| Import to batteries | W | Power split (W) |
| Import to system standby | W | Power split (W) |
| Import to home consumption ratio | % | Power split (%) |
| Import to batteries ratio | % | Power split (%) |
| Import to system standby ratio | % | Power split (%) |
The grid's share of the home
How much of everything your home consumes (or charges into batteries, or loses to standby) is currently covered by the grid. If this reads 30 %, the other 70 % comes from your solar and batteries.
| Sensor | Unit | Turn on with |
|---|---|---|
| Share of home consumption | % | Share of home totals (%) |
| Share of battery charging | % | Share of home totals (%) |
| Share of system standby | % | Share of home totals (%) |
Cost and earnings
Import cost
What your grid import costs per hour right now (import power × your current electricity price), and the running total. Needs the Electricity price setting.
| Sensor | Unit | Turn on with |
|---|---|---|
| Import cost rate | EUR/h | Cost method: Standard |
| Total import cost | EUR | Total costs |
Export compensation
What your home earns per hour by exporting, across all exporting PV systems and batteries, and the running total. Each device's own share appears on that device.
| Sensor | Unit | Turn on with |
|---|---|---|
| Export compensation rate | EUR/h | Export compensation rate |
| Total export compensation | EUR | Total export compensation |
Levelized costs (LCOE/LCOS) spread the price of hardware you own over its lifetime. Grid power has no such hardware, so the grid only offers the Standard cost method.