"energy_exported" and "energy_imported" return zero always

[ajfhodgson]

I have a Raspberry Pi set up to access my Powerwall 3's wifi and my home wifi (intending to pass data to Home Assistant)
But the "energy_exported" and "energy_imported" remain 0 both in calls to pw.poll("/api/meters/aggregates") and to pw.solar(verbose=True) etc.

Any ideas?

ETA: I'm sure this isn't an issue with pypowerwall, but hoping you clever people can help me!

pi@raspberrypi:~ $ python3 powerwall-poll.py
Polling Tesla Powerwall 3
Site Name: 64 HPA - Firmware: 25.26.1 2c4bb00e - DIN: 1707000-30-K--TG1243490010CC

        00:00:00,       0.532 s,        ok,    pw.power() Combined power metrics (W):
{"site": 138, "solar": 225, "battery": 1, "load": 363.75}

        00:00:00,       0.000 s,        ok,    pw.level() Battery power level:
23.07692307692308

        00:00:00,       0.239 s,        ok,    pw.poll("/api/meters/aggregates"):

{
  "site": {
    "last_communication_time": "2025-09-28T12:07:52+01:00",
    "instant_power": 138,
    "instant_reactive_power": 0,
    "instant_apparent_power": 0,
    "frequency": 0,
    "energy_exported": 0,
    "energy_imported": 0,
    "instant_average_voltage": 242,
    "instant_average_current": 0.5702479338842975,
    "i_a_current": 3.487,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "num_meters_aggregated": 1,
    "instant_total_current": 0.5702479338842975,
    "disclaimer": "site: voltage/current from Meter X"
  },
  "battery": {
    "last_communication_time": "2025-09-28T12:07:52+01:00",
    "instant_power": 1,
    "instant_reactive_power": 0,
    "instant_apparent_power": 0,
    "frequency": 0,
    "energy_exported": 0,
    "energy_imported": 0,
    "instant_average_voltage": 240.8,
    "instant_average_current": 0.00415282392026578,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "num_meters_aggregated": 1,
    "instant_total_current": 0.00415282392026578,
    "disclaimer": "battery: voltage from PINV, calculated current from power"
  },
  "load": {
    "last_communication_time": "2025-09-28T12:07:52+01:00",
    "instant_power": 363.75,
    "instant_reactive_power": 0,
    "instant_apparent_power": 0,
    "frequency": 0,
    "energy_exported": 0,
    "energy_imported": 0,
    "instant_average_voltage": 241,
    "instant_average_current": 1.5093360995850622,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "instant_total_current": 1.5093360995850622,
    "num_meters_aggregated": 1,
    "disclaimer": "load: voltage from ISLAND_AcMeasurements, current calculated from power"
  },
  "solar": {
    "last_communication_time": "2025-09-28T12:07:52+01:00",
    "instant_power": 225,
    "instant_reactive_power": 0,
    "instant_apparent_power": 0,
    "frequency": 0,
    "energy_exported": 0,
    "energy_imported": 0,
    "instant_average_voltage": 240.60000000000002,
    "instant_average_current": 0.9351620947630922,
    "i_a_current": 3.5045,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1000000000,
    "num_meters_aggregated": 1,
    "instant_total_current": 0.9351620947630922,
    "disclaimer": "solar: voltage from PVAC, calculated current from power"
  }
}

[JohnJ9ml]

I don't think the inverter has any accumulator logic inside. It was one of the things I was initially looking for when I found the project as well, but I think those figures are just always zeroed out.
I do my own logic based upon the figures coming back from the power() calls, and PWD does the same.

[jasonacox]

Unforutnately, that value is only available on PW2 units. I don't know why it was dropped for PW3. I've looked through the /tedapi payloads to see if there is a parallel but haven't found one. I don't have a PW3, so I may just be missing it. Feel free to check these APIs and let me know:

/tedapi/config, /tedapi/status, /tedapi/components, /tedapi/battery, /tedapi/controller

Here is the payload from my PW2:

{
  "site": {
    "last_communication_time": "2025-09-28T09:33:37.489796-07:00",
    "instant_power": 758,
    "instant_reactive_power": -541,
    "instant_apparent_power": 931.2598992762439,
    "frequency": 0,
    "energy_exported": 11107923.770189472,
    "energy_imported": 16172162.091005325,
    "instant_average_voltage": 120.37,
    "instant_average_current": 9.1635,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "num_meters_aggregated": 1,
    "instant_total_current": 9.1635
  },
  "battery": {
    "last_communication_time": "2025-09-28T09:33:37.407188-07:00",
    "instant_power": -10,
    "instant_reactive_power": 310,
    "instant_apparent_power": 310.16124838541646,
    "frequency": 60.001000000000005,
    "energy_exported": 22083965,
    "energy_imported": 24849159,
    "instant_average_voltage": 241.75,
    "instant_average_current": -0.4,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "num_meters_aggregated": 2,
    "instant_total_current": -0.4
  },
  "load": {
    "last_communication_time": "2025-09-28T09:33:37.407188-07:00",
    "instant_power": 1165.25,
    "instant_reactive_power": -211.75,
    "instant_apparent_power": 1184.3334095599937,
    "frequency": 0,
    "energy_exported": 0,
    "energy_imported": 50461860.320815854,
    "instant_average_voltage": 120.37,
    "instant_average_current": 9.6805682479023,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1500000000,
    "instant_total_current": 9.6805682479023
  },
  "solar": {
    "last_communication_time": "2025-09-28T09:33:37.467846307-07:00",
    "instant_power": 400,
    "instant_reactive_power": 10,
    "instant_apparent_power": 400.12498047485116,
    "frequency": 60,
    "energy_exported": 48162816,
    "energy_imported": 0,
    "instant_average_voltage": 240.3,
    "instant_average_current": 1.6638935108153077,
    "i_a_current": 0,
    "i_b_current": 0,
    "i_c_current": 0,
    "last_phase_voltage_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_power_communication_time": "0001-01-01T00:00:00Z",
    "last_phase_energy_communication_time": "0001-01-01T00:00:00Z",
    "timeout": 1000000000,
    "num_meters_aggregated": 1,
    "instant_total_current": 1.6638935108153077
  }
}

[ajfhodgson]

Thanks so much for this swift response!

Unfortunately, those endpoints all returned {'ERROR': 'Unknown API: /tedapi/XXXX'}

It's pretty frustrating Tesla progressively removing access and data. A polled instantaneous value isn't much use to accumulate to daily data without knowing how often to poll - the power values seem to change very rapidly!

I also tried pw.poll('/api/tedapi/config') - same error response.

Any other ideas?

Polling Tesla Powerwall 3
Site Name: 64 HPA - Firmware: 25.26.1 2c4bb00e - DIN: 1707000-30-K--TG1243490010CC

        00:00:00,       0.527 s,        ok,    pw.power() Combined power metrics (W):
{'site': 259, 'solar': 68, 'battery': 0, 'load': 327.5}

        00:00:00,       0.000 s,        ok,    pw.level() Battery power level:
23.77622377622378

        00:00:00,       0.000 s,        ok,    pw.poll('/tedapi/config'):
{'ERROR': 'Unknown API: /tedapi/config'}

        00:00:00,       0.000 s,        ok,    pw.poll('/tedapi/status'):
{'ERROR': 'Unknown API: /tedapi/status'}

        00:00:00,       0.000 s,        ok,    pw.poll('/tedapi/components'):
{'ERROR': 'Unknown API: /tedapi/components'}

        00:00:00,       0.000 s,        ok,    pw.poll('/tedapi/battery'):
{'ERROR': 'Unknown API: /tedapi/battery'}

        00:00:00,       0.000 s,        ok,    pw.poll('/tedapi/controller'):
{'ERROR': 'Unknown API: /tedapi/controller'}

        00:00:00,       0.189 s,        ok,    pw.poll('/api/meters/aggregates'):
{'site': {'last_communication_time': '2025-09-28T18:04:03+01:00', 'instant_power': 259, 'instant_reactive_power': 0, 'instant_apparent_power': 0, 'frequency': 0, 'energy_exported': 0, 'energy_imported': 0, 'instant_average_voltage': 242, 'instant_average_current': 1.0702479338842976, 'i_a_current': 3.1910000000000003, 'i_b_current': 0, 'i_c_current': 0, 'last_phase_voltage_communication_time': '0001-01-01T00:00:00Z', 'last_phase_power_communication_time': '0001-01-01T00:00:00Z', 'last_phase_energy_communication_time': '0001-01-01T00:00:00Z', 'timeout': 1500000000, 'num_meters_aggregated': 1, 'instant_total_current': 1.0702479338842976, 'disclaimer': 'site: voltage/current from Meter X'}, 'battery': {'last_communication_time': '2025-09-28T18:04:03+01:00', 'instant_power': 0, 'instant_reactive_power': 0, 'instant_apparent_power': 0, 'frequency': 0, 'energy_exported': 0, 'energy_imported': 0, 'instant_average_voltage': 241.20000000000002, 'instant_average_current': 0.0, 'i_a_current': 0, 'i_b_current': 0, 'i_c_current': 0, 'last_phase_voltage_communication_time': '0001-01-01T00:00:00Z', 'last_phase_power_communication_time': '0001-01-01T00:00:00Z', 'last_phase_energy_communication_time': '0001-01-01T00:00:00Z', 'timeout': 1500000000, 'num_meters_aggregated': 1, 'instant_total_current': 0.0, 'disclaimer': 'battery: voltage from PINV, calculated current from power'}, 'load': {'last_communication_time': '2025-09-28T18:04:03+01:00', 'instant_power': 327.5, 'instant_reactive_power': 0, 'instant_apparent_power': 0, 'frequency': 0, 'energy_exported': 0, 'energy_imported': 0, 'instant_average_voltage': 241, 'instant_average_current': 1.3589211618257262, 'i_a_current': 0, 'i_b_current': 0, 'i_c_current': 0, 'last_phase_voltage_communication_time': '0001-01-01T00:00:00Z', 'last_phase_power_communication_time': '0001-01-01T00:00:00Z', 'last_phase_energy_communication_time': '0001-01-01T00:00:00Z', 'timeout': 1500000000, 'instant_total_current': 1.3589211618257262, 'num_meters_aggregated': 1, 'disclaimer': 'load: voltage from ISLAND_AcMeasurements, current calculated from power'}, 'solar': {'last_communication_time': '2025-09-28T18:04:03+01:00', 'instant_power': 68, 'instant_reactive_power': 0, 'instant_apparent_power': 0, 'frequency': 0, 'energy_exported': 0, 'energy_imported': 0, 'instant_average_voltage': 241.4, 'instant_average_current': 0.28169014084507044, 'i_a_current': 3.208, 'i_b_current': 0, 'i_c_current': 0, 'last_phase_voltage_communication_time': '0001-01-01T00:00:00Z', 'last_phase_power_communication_time': '0001-01-01T00:00:00Z', 'last_phase_energy_communication_time': '0001-01-01T00:00:00Z', 'timeout': 1000000000, 'num_meters_aggregated': 1, 'instant_total_current': 0.28169014084507044, 'disclaimer': 'solar: voltage from PVAC, calculated current from power'}}

[JohnJ9ml]

I went through the output and didn't find anything for figures. I know I'd looked before and didn't find them either.

@ajfhodgson I just hit up the proxy (I have mine running on its own RPi out in the garage, close to the PWs):

curl http://powerwall:8675/tedapi/components | python -mjson.tool

[jasonacox]

Sorry about that! Here are the calls:

for request_path in [
    "/tedapi/config",
    "/tedapi/status",
    "/tedapi/components",
    "/tedapi/battery",
    "/tedapi/controller",
]:
    if request_path == "/tedapi/config":
        message = json.dumps(pw.tedapi.get_config())
    if request_path == "/tedapi/status":
        message = json.dumps(pw.tedapi.get_status())
    if request_path == "/tedapi/components":
        message = json.dumps(pw.tedapi.get_components())
    if request_path == "/tedapi/battery":
        message = json.dumps(pw.tedapi.get_battery_blocks())
    if request_path == "/tedapi/controller":
        message = json.dumps(pw.tedapi.get_device_controller())

    print(request_path, "=>", message)

[ajfhodgson]

Thanks for those calls, they worked.
They generated a LOT of output (over 4000 lines of JSON!)
But nothing that looked like an accumulated amount of Generated, Imported, Exported, Charged, Discharged, or Used.

tedapi results.txt :-(

[ajfhodgson]

@JohnJ9ml

I don't think the inverter has any accumulator logic inside. It was one of the things I was initially looking for when I found the project as well, but I think those figures are just always zeroed out. I do my own logic based upon the figures coming back from the power() calls, and PWD does the same.

Surely the battery+inverter+gateway must have accumulators, else what is producing the nice displays in the Tesla app?

So, you're accumulating the instantaneous values yourself for your purposes. What polling interval do you use? And how well do your accumulators match the values in the Tesla app? You might miss some big spikes, or think a 4 second spike lasted [10] seconds, but maybe across 24h they would not be material. I suppose I could just try it myself and see! Tomorrow!

[rick-davis-39]

if using home assistant create template sensors for:

Grid Import Power
{{ [ states('sensor.pw_grid_power_w') | float(0) , 0 ] | max | abs }}

Grid Export Power
{{ [ states('sensor.pw_grid_power_w') | float(0) , 0 ] | min | abs }}

then create integral helpers for Imported Energy & Exported Energy using the relevant input sensor

[Syncena]

FWIW, I've just set up pypowerwall here on an RPi4 as I'm planning to replace my existing PW2+TEG with a PW3 + expansion units.

With my existing PW2 and Backup Gateway 2, I see the same 'zero' values for energy using the tedapi as reported in this issue. Meanwhile, the original local API calls return non-zero energy values. So it does look like a limitation of the tedapi rather than the hardware.

Shame really. But I guess the instantaneous power values can be integrated over time to derive kWh, though with some loss of accuracy due to the sample rate.