load management not working as expected

[blastik]

Describe the bug

My charger is passing the limit set in the main circuit as maxPower

Steps to reproduce

See configuration below.

1. Setup a meter for the house consumption
2. Setup a meter for the grid consumption
3. Set the car charger to the main circuit
4. Setup load management. Set grid circuit as the parent of the house circuit. In there I already see a deviation in kW in the UI and I dont understand why.

5. Start charging in fast mode.

Configuration details

auxMeters:     
circuits:      - name: grid # unique name, used as reference, e.g. as parent in other circuits
  title: Grid # used in the UI
  maxPower: 3450
  meter: db:4 # associated meter to monitor the power consumption (optional)
eebus:                                 {"port":4712,"shipid":"EVCC-3234336438613732","certificate":{"public":"masked","private":"masked"}}
extMeters: 
gridMeter:                             db:4
http://192.168.1.10:7070-7e138d79:     {"access_token":"masked","token_type":"Bearer","refresh_token":"masked","expiry":"2026-03-03T22:13:30.016579647+01:00","expires_in":1800}
https://masked-002c9f97: {"access_token":"masked","token_type":"Bearer","refresh_token":"masked","expiry":"2026-03-05T13:29:46.727189957+01:00","expires_in":1800}
jwtSecretKey:                          masked
messagingEvents:                       {"asleep":{"title":"Vehicle asleep","msg":"Charge release, vehicle {{ if .vehicleTitle }}{{ .vehicleTitle }} {{ end }} not charging.","disabled":true},"connect":{"title":"Car connected","msg":"Car connected at ${pvPower:%.1fk}kW PV","disabled":true},"disconnect":{"title":"Car disconnected","msg":"Car disconnected after ${connectedDuration}","disabled":true},"guest":{"title":"Unknown vehicle","msg":"Unknown vehicle, guest connected?","disabled":true},"planoverrun":{"title":"Plan overrun","msg":"{{ if .vehicleTitle }} {{ .vehicleTitle }} {{end}}: Plan will overrun.","disabled":true},"soc":{"title":"Charge level updated","msg":"Battery charged to ${vehicleSoc:%.0f}%","disabled":true},"start":{"title":"Charge started","msg":"Started charging in ${mode} mode.","disabled":true},"stop":{"title":"Charge finished","msg":"Finished charging ${chargedEnergy:%.1fk}kWh in ${chargeDuration}.","disabled":true}}
network:                               {"externalUrl":"https://masked","host":"","port":7070,"internalUrl":"http://172.16.14.2:7070"}
plant:                                 masked
pvMeters:                              db:3
solarAccForecast:                      9.063082659962665
solarAccYield:                         {"db:3":{"accumulated":8714.149298647091}}
sponsorToken:                          masked
tariffs:                               currency: EUR

grid:
 type: fixed
 price: 0.098 # EUR/kWh (default)
 zones:
      - days: Mon-Fri # Monday to including Friday
        hours: 8-10
        price: 0.150 # EUR/kWh
      - days: Mon-Fri # Monday to including Friday
        hours: 10-14
        price: 0.253 # EUR/kWh
      - days: Mon-Fri # Monday to including Friday
        hours: 14-18
        price: 0.150 # EUR/kWh
      - days: Mon-Fri # Monday to including Friday
        hours: 18-22
        price: 0.253 # EUR/kWh
      - days: Mon-Fri # Monday to including Friday
        hours: 22-00
        price: 0.150 # EUR/kWh

feedin: # price for feeding solar energy to the grid
  type: fixed
  price: 0.04 # EUR/kWh

solar: # list of pv generation forecast (additive)
- type: template
  template: solcast
  site: masked
  token: masked
tesla-command.169127f9-34e5-4972-8b98-68307b68cf8f: {"access_token":"masked","expiry":"2026-03-05T13:08:08.690537412+01:00","expires_in":28800}
title:                                              evcc
vehicle.db:5.limitSoc:                              0
vehicle.db:5.minSoc:                                15
vehicle.db:5.repeatingPlans:                        [{"weekdays":[1,2,3,4,6,0],"time":"07:00","tz":"Europe/Madrid","soc":50,"active":true},{"weekdays":[5],"time":"16:00","tz":"Europe/Madrid","soc":80,"active":true}]
/app # evcc config
[main  ] INFO 2026/03/05 13:07:14 config file not found, database-only mode
[main  ] INFO 2026/03/05 13:07:14 using sqlite database: /root/.evcc/evcc.db?_pragma=busy_timeout(5000)
charger
---
db:1 {Type:template Title: Icon: Product:V2C Trydan} map[host:192.168.1.18 template:v2c]

meter
---
db:3 {Type:template Title:haos Icon: Product:Home Assistant} map[currentL1: currentL2: energy:sensor.inverter_total_yield maxacpower:0 power:sensor.inverter_input_power template:homeassistant uri:***** usage:pv voltageL1: voltageL2:]
db:4 {Type:template Title: Icon: Product:Home Assistant} map[maxacpower:0 power:sensor.meter_from_grid_total template:homeassistant uri:***** usage:grid]

vehicle
---
db:5 {Type:template Title: Icon: Product:Tesla} map[accessToken:***** cache:15m capacity:78.7 clientId:masked commandProxy:https://api.myteslamate.com icon:car identifiers:[masked] refreshToken:***** template:tesla title:Chase]

loadpoint
---
db:2 {Type: Title: Icon: Product:} map[charger:db:1 circuit:grid defaultMode: limitSoc:80 meter: mode:off phasesConfigured:1 planStrategy:map[continuous:false precondition:0] soc:map[estimate:true poll:map[interval:3.6e+12 mode:charging]] thresholds:map[disable:map[delay:6e+11 threshold:0] enable:map[delay:6e+11 threshold:0]] title:Garage vehicle:]

Log details

evcc-20260305-221052-trace.log

What type of operating system or environment does evcc run on?

Docker container

External automation

• I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

• I have verified that the issue is reproducible with the latest nightly build

Version

0.301.2

[andig]

Unfortunately your report is missing a detailed log file. Without log, we don‘t have the information for diagnosing the issue described. See https://docs.evcc.io/docs/faq#wie-kann-ich-ein-logfile-zur-fehleranalyse-erstellen.

[blastik]

sorry, uploaded as file @andig
do you think this can be reopened ?

[andig]

Can you please show the relevant part in the issue?

[blastik]

Can you please show the relevant part in the issue?

updated. i hope its enough. ive been trying to use claude before but couldnt really find any bug in the code so it might be missing out some configuration ?

[andig]

Log seems fine. What exactly is „not working“ and where can I see this in the log?

[blastik]

Log seems fine. What exactly is „not working“ and where can I see this in the log?

is difficult to see the issue in the log. what is not working is that the charger surpasses the maxPower set in the Load Management for the main circuit

I have configured the house as a circuit having the grid (main) circuit as a parent. Also I have attached the charger to the grid (main) circuit.

in summary. I don't understand why evcc don't lower the power of the charger based upon the Load management limitation. in theory, evcc has all the information that needs

[andig]

@premultiply any chance you could take a look?

[mfuchs1984]

What's the purpose of the casa circuit using the calculated house consumption from home assistant as meter?

[mfuchs1984]

The log doesn't show the problem, charging starts at the very end with 2137W, the grid power is at 2341W. Then, the log ends.

[blastik]

What's the purpose of the casa circuit using the calculated house consumption from home assistant as meter?

Casa is all the consumption from my house. My theory is that I should be putting it as child to the Grid circuit. So that both the charger and the house consumption values are summed up for evcc to adjust the power of the charger based on the limit set in load management.

The log doesn't show the problem, charging starts at the very end with 2137W, the grid power is at 2341W. Then, the log ends.

I'll try to pull again other logs. Have you checked the file? It has more.

[mfuchs1984]

So that both the charger and the house consumption values are summed up for evcc to adjust the power of the charger based on the limit set in load management.

That's not necessary. Evcc knows the power at the grid meter and adjusts based on that automatically.

[blastik]

So that both the charger and the house consumption values are summed up for evcc to adjust the power of the charger based on the limit set in load management.

That's not necessary. Evcc knows the power at the grid meter and adjusts based on that automatically.

ok i've set Load management as follows now:

- name: grid # unique name, used as reference, e.g. as parent in other circuits
  title: Grid # used in the UI
  maxPower: 3450
  meter: db:4 # associated meter to monitor the power consumption (optional)

[mfuchs1984]

I checked the file, it ends when charging starts.

[blastik]

evcc-20260305-221052-trace.log

here I attach another log. hopefully you can see more information

[mfuchs1984]

What kind of electric installation do you have? Your charger seems to report 298 V, while evcc calculates with 230. Evcc allows 14 A, which is 3220 W, but with your 298 V, it's 4172 W.

[premultiply]

‘Household consumption’ is a value that is always calculated automatically.
You cannot add meters for it, as it is the unmeasured remainder.

Unfortunately, I have absolutely no idea what is being attempted here.

[blastik]

im just attempting to make load management work as it should. because for me. it doesnt. it clearly surpasses the maxPower

if house consumption is calculated automatically then im removing that meter and leaving the load management like this

#27959 (reply in thread)