evcc: tariffs (grid from HA price, fixed feed-in) + solar forecast #109

2026-07-04T17:34:47Z

k.renner commented

2026-07-04 17:34:47 +00:00

Completes the evcc config beyond meters (part of "setup the rest of evcc").

Adds to evcc.yaml

Grid tariff (type: custom) reading MQTT topic evcc/tariff/gridprice. The price stays canonical in Home Assistant (input_number.strompreis); a small HA automation republishes it to that topic (retained). Companion PR in the homeassistant repo adds that automation.
Feed-in: fixed 0.08 EUR/kWh (from the HA Energy dashboard).
Solar forecast: free forecast.solar plane derived from the HA forecast_solar config — az 10 (evcc 0=S; HA az 190 with 0=N), 60 deg tilt, 8.61 kWp, at 49.49N 11.76E.
Sponsor token: documented placeholder only (not required for meters+tariffs+forecast; needed later for a commercial charger loadpoint).

Notes

No broker ACL change: evcc already has readwrite on evcc/#, and HA (full access) publishes the price there.
evcc restart picks up the new config (subPath-mounted). If the HA automation is not merged yet, the grid price is simply unavailable until the retained topic gets a value — evcc tolerates it.
Verified the custom-tariff MQTT plugin syntax (price: {source: mqtt, topic:, timeout:}) against the evcc plugin docs before writing.

Completes the evcc config beyond meters (part of "setup the rest of evcc"). ## Adds to evcc.yaml - **Grid tariff** (`type: custom`) reading MQTT topic `evcc/tariff/gridprice`. The price stays canonical in Home Assistant (`input_number.strompreis`); a small HA automation republishes it to that topic (retained). **Companion PR in the homeassistant repo adds that automation.** - **Feed-in**: fixed 0.08 EUR/kWh (from the HA Energy dashboard). - **Solar forecast**: free forecast.solar plane derived from the HA `forecast_solar` config — az 10 (evcc 0=S; HA az 190 with 0=N), 60 deg tilt, 8.61 kWp, at 49.49N 11.76E. - **Sponsor token**: documented placeholder only (not required for meters+tariffs+forecast; needed later for a commercial charger loadpoint). ## Notes - No broker ACL change: evcc already has readwrite on `evcc/#`, and HA (full access) publishes the price there. - evcc restart picks up the new config (subPath-mounted). If the HA automation is not merged yet, the grid price is simply unavailable until the retained topic gets a value — evcc tolerates it. - Verified the custom-tariff MQTT plugin syntax (`price: {source: mqtt, topic:, timeout:}`) against the evcc plugin docs before writing.

k.renner added 1 commit 2026-07-04 17:34:47 +00:00

evcc: add tariffs (grid from HA price, fixed feed-in) + solar forecast 011fd02cc7

Completes the evcc energy-manager config beyond meters:
- grid tariff: type custom reading the MQTT topic evcc/tariff/gridprice,
  which an HA automation republishes from input_number.strompreis (HA
  stays the single source of truth for the grid price).
- feedin: fixed 0.08 EUR/kWh (from the HA Energy dashboard).
- solar: forecast.solar plane derived from the HA forecast_solar config
  (az 10 evcc / 60 deg tilt / 8.61 kWp at 49.49N, 11.76E).
- sponsor token left as a documented placeholder (not needed until a
  commercial charger loadpoint exists).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

k.renner added 1 commit 2026-07-04 17:53:30 +00:00

evcc: prepared (inactive) SG-Ready heating loadpoint for the Vitocal 9be7b7bc96

Adds a commented, documented heating-device block to evcc.yaml: an
sgready-relay charger + heating loadpoint (surplus-threshold driven) plus
a heat-pump power meter (open3e DID 2488). Left INACTIVE so evcc doesn't
try to reach a relay that isn't wired yet. To activate: wire a Shelly to
the Vitocal SG-Ready terminals (143.1/143.4/143.5), enable SG in the
service menu, set host, uncomment. evcc drives boost/normal via SG-Ready;
the heat pump firmware owns the smart-grid logic.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

k.renner merged commit 474bdffc4f into master

2026-07-04 18:05:20 +00:00

k.renner referenced this issue from a commit

2026-07-04 18:05:21 +00:00

Merge pull request 'evcc: tariffs (grid from HA price, fixed feed-in) + solar forecast' (#109) from feat/evcc-tariffs-forecast into master

alert-monitor-bot referenced this pull request

2026-10-12 02:29:12 +00:00

[alert] KubeJobFailed (renovate) #1267

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Reference: konairius/homelab#109