History production sum incomplete

[ross90]

Description

I have configured three photovoltaic systems in evcc via the UI: one via Modbus (SolarEdge), a balcony solar system via OpenCCU (Homematic IP), and an older system via Shelly (SolarMax). The overview displays production from all three - and they also appear in the legend of the generation chart on the history page, but the log and the chart itself only show values ​​for the SolarEdge and the balcony system. For example: on August 20th, between 9:15 and 9:30 AM, 3.1 kW was generated (SolarEdge 1.9; balcony system 0.1; SolarMax 1.2). However, the sum shows as 2 kW in the chart. The log also outputs only the sum of the SolarEdge and the balcony system, along with the forecast value; the SolarMax value is completely missing from the total.

Steps to Reproduce

0. You need multiple photovoltaic systems
1. Go to History page and calculate the sum of all systems and compare them to the charts and log entries.

Configuration (UI)

{
  "charger": [
    {"id":16,"name":"db:16","type":"template","config":{"template":"homematic","cache":"1s","device":"003AA2699C8AD3","heating":false,"host":"192.168.0.90","icon":"dishwasher","integrateddevice":true,"meterchannel":"6","password":"***","port":"2010","standbypower":4,"switchchannel":"3","user":"***"},"deviceProduct":"Homematic IP"},
    {"id":12,"name":"db:12","type":"template","config":{"template":"homematic","cache":"1s","device":"003AA2699C8CEF","heating":false,"host":"192.168.0.90","icon":"laundry","integrateddevice":true,"meterchannel":"6","password":"***","port":"2010","standbypower":4,"switchchannel":"3","user":"***"},"deviceProduct":"Homematic IP"},
    {"id":14,"name":"db:14","type":"template","config":{"template":"homematic","cache":"1s","device":"003AA2699C8ADC","heating":false,"host":"192.168.0.90","icon":"laundry","integrateddevice":true,"meterchannel":"6","password":"***","port":"2010","standbypower":4,"switchchannel":"3","user":"***"},"deviceProduct":"Homematic IP"},
    {"id":24,"name":"db:24","type":"template","config":{"template":"homematic","cache":"1s","device":"0001D3C99C9374","heating":false,"host":"192.168.0.90","icon":"dishwasher","integrateddevice":true,"meterchannel":"6","password":"***","port":"2010","standbypower":5,"switchchannel":"3","user":"***"},"deviceProduct":"Homematic IP"},
    {"id":30,"name":"db:30","type":"template","config":{"id":1,"template":"stiebel-wpm","baudrate":9600,"comset":"8N1","host":"192.168.0.147","modbus":"tcpip","port":502,"tempsource":"warmwater"},"deviceProduct":"Stiebel Eltron WPM (SG Ready)"},
    {"id":43,"name":"db:43","type":"template","config":{"template":"ellipro","ip":"192.168.0.155","ski":"***"},"deviceProduct":"Volkswagen ID. Charger Pro"}
  ],
  "experimental": true,
  "influx": {"database":"evcc","insecure":true,"org":"rosshab","password":"","token":"***","url":"https://192.168.0.80:8086/","user":""},
  "interval": 30,
  "loadpoints": [
    {"id":13,"name":"db:13","batteryBoostLimit":100,"charger":"db:12","defaultMode":"pv","limitEnergy":0,"limitSoc":0,"maxCurrent":13,"minCurrent":5,"minSoc":0,"phasesConfigured":1,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":5,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Trockner","ui":{"maxTemp":0,"minTemp":0}},
    {"id":15,"name":"db:15","batteryBoostLimit":100,"charger":"db:14","defaultMode":"pv","limitEnergy":0,"limitSoc":0,"maxCurrent":10,"minCurrent":3,"minSoc":0,"phasesConfigured":1,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":1,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Waschmaschine","ui":{"maxTemp":0,"minTemp":0}},
    {"id":17,"name":"db:17","batteryBoostLimit":100,"charger":"db:16","defaultMode":"pv","limitEnergy":0,"limitSoc":0,"maxCurrent":12,"minCurrent":4,"minSoc":0,"phasesConfigured":1,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":3,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Spülmaschine","ui":{"maxTemp":0,"minTemp":0}},
    {"id":25,"name":"db:25","batteryBoostLimit":100,"charger":"db:24","defaultMode":"pv","limitEnergy":0,"limitSoc":0,"maxCurrent":12,"minCurrent":6,"minSoc":0,"phasesConfigured":1,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":0,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Spülmaschine Oben","ui":{"maxTemp":0,"minTemp":0}},
    {"id":31,"name":"db:31","batteryBoostLimit":100,"charger":"db:30","defaultMode":"","limitEnergy":0,"limitSoc":60,"maxCurrent":16,"meter":"db:32","minCurrent":4,"minSoc":0,"phasesConfigured":3,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":0,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Stiebel Eltron ","ui":{"maxTemp":70,"minTemp":25}},
    {"id":44,"name":"db:44","batteryBoostLimit":100,"charger":"db:43","defaultMode":"","limitEnergy":0,"limitSoc":0,"maxCurrent":16,"minCurrent":6,"minSoc":0,"phasesConfigured":3,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":0,"smartCostLimit":0.2,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Garage ID.Charger Pro","ui":{"maxTemp":100,"minTemp":0},"vehicle":"db:42"}
  ],
  "meter": [
    {"id":11,"name":"db:11","type":"template","config":{"template":"homematic","cache":"1s","device":"000B9F298DFB61","host":"192.168.0.90","meterchannel":5,"password":"***","usage":"pv","user":"***"},"deviceProduct":"Homematic IP","deviceTitle":"Balkonkraftwerk"},
    {"id":28,"name":"db:28","type":"template","config":{"template":"shelly-1pm","host":"192.168.0.21","usage":"pv"},"deviceProduct":"Shelly Pro 3EM (monophase device profile)","deviceTitle":"SolarMax"},
    {"id":32,"name":"db:32","type":"template","config":{"template":"shelly-pro-3em","host":"192.168.0.22","usage":"charge"},"deviceProduct":"Shelly Pro 3 EM"},
    {"id":26,"name":"db:26","type":"template","config":{"template":"shelly-pro-3em","host":"192.168.0.20","usage":"grid"},"deviceProduct":"Shelly Pro 3 EM"},
    {"id":34,"name":"db:34","type":"template","config":{"id":1,"template":"solaredge-hybrid","baudrate":9600,"capacity":9.2,"comset":"8N1","host":"192.168.0.148","maxacpower":"0","maxchargepower":5000,"maxdischargepower":"5000","maxsoc":95,"minsoc":20,"modbus":"tcpip","port":1502,"usage":"battery","watchdog":"60s"},"deviceProduct":"SolarEdge Hybrid Inverter","deviceTitle":"SolarEdge Batterie"},
    {"id":33,"name":"db:33","type":"template","config":{"id":1,"template":"solaredge-hybrid","baudrate":9600,"comset":"8N1","host":"192.168.0.148","maxacpower":9000,"maxdischargepower":"5000","modbus":"tcpip","port":1502,"usage":"pv","watchdog":"60s"},"deviceProduct":"SolarEdge Hybrid Inverter","deviceTitle":"SolarEdge"}
  ],
  "modbusproxy": [{"port":8502,"readonly":"false","settings":{"rtu":false,"uri":"192.168.0.148:1502"}}],
  "mqtt": {"broker":"tls://192.168.0.80:8883","caCert":"","clientCert":"","clientID":"evcc","clientKey":"","insecure":true,"password":"***","topic":"evcc","user":"openhab"},
  "residualPower": 0,
  "shm": {"deviceId":"","deviceSerial":"","vendorId":""},
  "site": {"aux":null,"battery":["db:34"],"consumer":null,"ext":null,"grid":"db:26","pv":["db:11","db:28","db:33"],"title":"RossHabEnergy"},
  "tariff": [
    {"id":19,"name":"db:19","type":"template","config":{"template":"fixed","price":0.08},"deviceProduct":"Fester Preis"},
    {"id":36,"name":"db:36","type":"template","config":{"template":"energypriceforecast-co2","horizon":"120","region":"DE"},"deviceProduct":"Energy Price Forecast EU CO₂"},
    {"id":38,"name":"db:38","type":"template","config":{"template":"open-meteo","ac":"1000","alphatemp":"-0.004","az":147,"de":"0","dec":20,"dm":"0","efficiency":"100","interval":"1h","kwp":5,"lat":"***","lon":"***","model":"best_match","rossmodel":"0.0342"},"deviceProduct":"Open-Meteo","deviceTitle":"SolarMax"},
    {"id":35,"name":"db:35","type":"template","config":{"template":"open-meteo-temperature","interval":"1h","lat":"***","lon":"***"},"deviceProduct":"Open-Meteo Temperature"},
    {"id":21,"name":"db:21","type":"template","config":{"template":"open-meteo","ac":"1000","alphatemp":"-0.004","az":147,"de":"0","dec":17,"dm":"0","efficiency":"100","interval":"1h","kwp":5,"lat":"***","lon":"***","model":"best_match","rossmodel":"0.0342"},"deviceProduct":"Open-Meteo","deviceTitle":"SolarEdge Süden"},
    {"id":22,"name":"db:22","type":"template","config":{"template":"open-meteo","ac":"1000","alphatemp":"-0.004","az":57,"de":"0","dec":42,"dm":"0","efficiency":"100","interval":"1h","kwp":3,"lat":"***","lon":"***","rossmodel":"0.0342"},"deviceProduct":"Open-Meteo","deviceTitle":"SolarEdge Osten"},
    {"id":37,"name":"db:37","type":"template","config":{"template":"energypriceforecast","average":false,"charges":0.149,"currency":"EUR","horizon":"120","region":"DE","tax":0.19},"deviceProduct":"Energy Price Forecast EU Predicted spot prices"}
  ],
  "tariffRefs": {"co2":"db:36","feedIn":"db:19","grid":"db:37","planner":"","solar":["db:21","db:22","db:38"],"temperature":"db:35"},
  "vehicle": [
    {"id":42,"name":"db:42","type":"template","config":{"template":"offline","capacity":43,"coarsecurrent":false,"icon":"car","maxCurrent":16,"minCurrent":6,"phases":"3","priority":0,"title":"Dolphin","welcomecharge":false},"deviceProduct":"Generisches Fahrzeug (ohne API)"}
  ]
}

Logs

[lp-5  ] DEBUG 2026/08/20 21:46:00 charger soc: 58%
[lp-5  ] DEBUG 2026/08/20 21:46:00 !! plan: plan time zero
[lp-5  ] DEBUG 2026/08/20 21:46:00 pv charge current: 0A = 0.0833A + -0.915A (632W @ 3p)
[site  ] DEBUG 2026/08/20 21:46:00 solar forecast: produced 36.454kWh, forecasted 49.933kWh, scale 0.730
[site  ] DEBUG 2026/08/20 21:46:29 ----
[lp-6  ] DEBUG 2026/08/20 21:46:29 charge power: 0W
[lp-6  ] DEBUG 2026/08/20 21:46:29 charge currents: [0 0 0]A
[lp-3  ] DEBUG 2026/08/20 21:46:29 charge power: 0W
[lp-2  ] DEBUG 2026/08/20 21:46:29 charge power: 0W
[lp-1  ] DEBUG 2026/08/20 21:46:29 charge power: 0W
[lp-4  ] DEBUG 2026/08/20 21:46:29 charge power: 0W
[lp-5  ] DEBUG 2026/08/20 21:46:29 charge power: 57W
[lp-5  ] DEBUG 2026/08/20 21:46:29 charge currents: [0.314 0.235 0.281]A
[site  ] DEBUG 2026/08/20 21:46:29 pv 1 power: 0W
[site  ] DEBUG 2026/08/20 21:46:30 pv 2 power: 0W
[site  ] DEBUG 2026/08/20 21:46:30 grid power: -9W
[site  ] DEBUG 2026/08/20 21:46:30 grid powers: [16 82 -108]W
[site  ] DEBUG 2026/08/20 21:46:30 grid currents: [1.98 1.36 -0.913]A
[site  ] DEBUG 2026/08/20 21:46:30 battery 1 power: 634W
[site  ] DEBUG 2026/08/20 21:46:30 battery 1 soc: 78%
[site  ] DEBUG 2026/08/20 21:46:30 pv 3 power: -79W
[site  ] DEBUG 2026/08/20 21:46:30 pv power: 0W
[site  ] DEBUG 2026/08/20 21:46:30 site power: 625W
[lp-6  ] DEBUG 2026/08/20 21:46:30 charger status: A
[site  ] DEBUG 2026/08/20 21:46:30 solar forecast: produced 36.454kWh, forecasted 49.933kWh, scale 0.730

Version

v0.314.2

System

linux/arm64, CEST +02:00

[github-actions]

Thanks for the detailed config! A few notes from investigating:

What I checked

• core/site_tariffs.go solarScale() (the source of the "solar forecast: produced …, forecasted …, scale …" log line on v0.314.2) sums the pv group with a single grouped SQL SUM(...) (core/metrics/db_history.go QueryEnergy), so it should include all PV entities, not just two of three, as long as each meter's readings are actually being persisted to the local history DB.
• The History page chart (assets/js/components/History/GroupChart.vue) simply stacks whatever series it's given — nothing in the frontend caps it at 2 entities.
• Each configured PV meter gets its own metrics.Collector (core/site.go), and updatePvMeters() (core/site.go) persists per-meter energy independently via Collector.AddEnergy. A meter whose TotalEnergy() occasionally reads 0/NaN is filtered out for that cycle (nonZeroEnergy, core/site.go collectMeters) and — once it has reported a real total before — a later nil read is treated as a transient miss rather than a power-integration fallback (core/metrics/collector.go AddEnergy). That's a plausible way for one meter's contribution to intermittently go missing from the persisted history/chart while still showing correctly live on the dashboard, but I can't confirm this is what's happening here.

What's missing to confirm a root cause
The log excerpt you posted is from 21:46 (nighttime, all PV ~0W, and the values shown there are actually internally consistent: pv 2 power: 0W = SolarMax there, plus pv 3 power: -79W clamped to 0 in the sum). It doesn't cover the 09:15–09:30 window where you observed the 1.2 kW SolarMax gap. To pin this down I'd need:

• The DEBUG log for that specific time window, especially the pv 1/2/3 power lines and the pv power: … sum line (pv meter order per your config is 1=Balkonkraftwerk db:11, 2=SolarMax db:28, 3=SolarEdge db:33).
• Any WARN/ERROR lines mentioning pv or persist pv … energy around that time.
• Whether this has always been the case since SolarMax was added, or whether it worked correctly before (a regression) and if so since roughly which version.

Since the provided log doesn't actually demonstrate the reported discrepancy and I can't confirm a specific defect without more data, I'm holding off on labeling this a bug for now — please share the above and I'll take another look.

🤖 Generated with Claude Code

[ross90]

Unfortunately, I no longer have the logs from that period because evcc was restarted. However, the total in the log at 21:46:00 doesn't match the measured values ​​either. According to the log, 36.454 kWh were generated, but the actual figure was 58.6 kWh.

[github-actions]

Thanks for the follow-up. The 36.454kWh vs. 58.6kWh mismatch is a useful data point: that "produced" figure (on v0.314.2) comes from the exact same source as the history chart — metrics.QueryEnergy summing the persisted per-meter rows in the pv group (core/metrics/db_history.go, core/site_tariffs.go solarScale() at that version). The SQL aggregation (GROUP BY group, time-bucket with SUM(energy)) itself looks correct, so a day-long ~22 kWh shortfall (roughly what SolarMax alone could produce) is consistent with the earlier hypothesis: the SolarMax meter's readings aren't reliably reaching the persistence layer, rather than a chart/query bug — it would explain why it still shows correctly live (from the instantaneous CurrentPower()) but is partly missing from the accumulated/persisted totals.

To narrow this down further I'd still need actual log evidence, since I can't confirm it from the config alone:

• A DEBUG log covering a few daytime hours (doesn't need to be the exact 09:15 window), filtered for pv 2 (SolarMax is PV entity 2 per your site.pv order: db:11 Balkonkraftwerk, db:28 SolarMax, db:33 SolarEdge) — specifically the pv 2 power: …W and pv 2 energy: … lines.
• Any ERROR lines containing pv 2 energy or persist pv 2 energy — those would indicate the Shelly (db:28, shelly-1pm template / "Pro 3EM monophase" profile) is intermittently failing to report power/energy.
• Whether the SolarMax value on the live dashboard ever visibly drops to 0 or blinks/resets during the day (as opposed to a rock-steady live reading).

Without that, I can't confirm whether this is a defect in evcc's metering pipeline or a flaky/underperforming Shelly connection, so I'm holding off on a definitive root cause.

🤖 Generated with Claude Code