Total System Power demand values ignored when negative (Solar Export)

[SEWADE]

System Health details

System Information

version	core-2026.1.3
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
container_arch	amd64
user	root
virtualenv	false
python_version	3.13.11
os_name	Linux
os_version	6.12.63-haos
arch	x86_64
timezone	Europe/Berlin
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	5000
Installed Version	2.0.5
Stage	running
Available Repositories	2642
Downloaded Repositories	30

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 17.0
update_channel	stable
supervisor_version	supervisor-2026.01.1
agent_version	1.8.1
docker_version	29.1.3
disk_total	48.5 GB
disk_used	30.4 GB
nameservers	fdfa:c9ca:abd7:0:be24:11ff:fef2:93c6, 192.168.0.1, 192.168.0.2
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization	kvm
board	ova
supervisor_api	ok
version_api	ok
installed_addons	File editor (5.8.0), Terminal & SSH (9.22.0), Mosquitto broker (6.5.2), MQTT Explorer (browser-1.0.3), Studio Code Server (6.0.1), Matter Server (8.2.0), Home-Assistant-Matter-Hub (3.0.4), Zigbee2MQTT Proxy (0.3.0), CEC Scanner (3.0), go2rtc (1.9.11), Music Assistant (2.7.5), YT Music PO Token Generator (1.2.2), ESPHome Device Builder (2026.1.2)

Dashboards

dashboards	4
resources	13
views	3
mode	storage

Network Configuration

adapters	lo (disabled), enp0s19 (enabled, default, auto), docker0 (disabled), hassio (disabled), veth1ec47fa (disabled), veth08344e8 (disabled), veth392e8c2 (disabled), veth6f77a5e (disabled), vethf7d2000 (disabled), veth9313a0f (disabled), vethbfc872f (disabled), veth3defdeb (disabled), veth9763368 (disabled), vethb3c5bee (disabled), vethaaede91 (disabled), veth97edf7b (disabled), veth7e18549 (disabled)
ipv4_addresses	lo (127.0.0.1/8), enp0s19 (192.168.0.21/22), docker0 (172.30.232.1/23), hassio (172.30.32.1/23), veth1ec47fa (), veth08344e8 (), veth392e8c2 (), veth6f77a5e (), vethf7d2000 (), veth9313a0f (), vethbfc872f (), veth3defdeb (), veth9763368 (), vethb3c5bee (), vethaaede91 (), veth97edf7b (), veth7e18549 ()
ipv6_addresses	lo (::1/128), enp0s19 (2003:e6:5f30:8d00:3f38:6f70:5ca3:17cd/64, fdfa:c9ca:abd7:0:5f82:5f13:5b8c:19e6/64, fe80::d3ac:afa7:4628:b9db/64), docker0 (fe80::e0a5:7fff:fe8f:624c/64), hassio (fe80::cc77:adff:fe94:723c/64), veth1ec47fa (fe80::c06c:eeff:fe5c:ed08/64), veth08344e8 (fe80::ec06:a7ff:fe6a:e97b/64), veth392e8c2 (fe80::1cd5:c7ff:fefe:47a0/64), veth6f77a5e (fe80::78cc:14ff:fe1f:e79e/64), vethf7d2000 (fe80::b83e:84ff:fe74:6b23/64), veth9313a0f (fe80::a82c:8fff:fe2a:9f60/64), vethbfc872f (fe80::44f2:29ff:fe45:96d7/64), veth3defdeb (fe80::f448:eaff:fecf:a38c/64), veth9763368 (fe80::a40c:e3ff:fedb:91ab/64), vethb3c5bee (fe80::3c1e:60ff:fef8:bc34/64), vethaaede91 (fe80::fc0c:72ff:fe6f:a63/64), veth97edf7b (fe80::90e4:a5ff:fed3:c0eb/64), veth7e18549 (fe80::4824:52ff:fe8a:948a/64)
announce_addresses	192.168.0.21, 2003:e6:5f30:8d00:3f38:6f70:5ca3:17cd, fdfa:c9ca:abd7:0:5f82:5f13:5b8c:19e6, fe80::d3ac:afa7:4628:b9db

Recorder

oldest_recorder_run	29. September 2025 um 11:30
current_recorder_run	26. Januar 2026 um 18:43
estimated_db_size	16713.67 MiB
database_engine	sqlite
database_version	3.49.2

Checklist

• I have enabled debug logging for my installation.
• I have filled out the issue template to the best of my ability.
• This issue only contains 1 issue (if you have multiple issues, open one issue for each issue).
• This issue is not a duplicate issue of any previous issues..

Describe the issue

The integration incorrectly ignores values for the sensor Total System Power demand when they are negative. This happens during solar export periods. It seems the integration treats this sensor as a monotonic counter (total_increasing) rather than a measurement that can be negative.

Reproduction steps

1. Use the modbus_local_gateway with a device that reports negative power during grid export.
2. Observe the Home Assistant logs during a period of high solar production/low consumption.
3. The sensor value in Home Assistant stops updating and the log shows "Ignoring device value".

Debug logs

Logger: custom_components.modbus_local_gateway.sensor
Source: custom_components/modbus_local_gateway/sensor.py:154
Integration: Modbus Local Gateway

Ignoring device value with Total System Power demand as -520.1522216796875 - never resets -516.4185791015625
Ignoring device value with Total System Power demand as -523.7283325195312 - never resets -520.1522216796875


New finding: The Home Assistant recorder also throws an error confirming that the entity sensor.eastron_total_system_power_demand is incorrectly assigned the state class total_increasing:

Entity [...] has state class total_increasing, but its state is negative (-41.7).

This sensor represents "Power" (W), not "Energy" (kWh). It should be changed to state_class: measurement and device_class: power to allow negative values during export.

Diagnostics dump

No response

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🔗 Related PRs

#30 - Fix for read registers response. Update to devices to fix HA error [merged]
#39 - Allow update of total increasing values. Value may be smaller dur to … [merged]
#55 - Enhance Modbus configurations and debugging capabilities [merged]

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