AI: Ask questions about energy consumption

Chris75 · July 17, 2026, 12:54pm

« What was the power consumption in kWh of the inverter outlet for July 12, 2026? »

« What was the cost in euros for the consumption of the TV outlet for June 2026? »

and so on…

guim31 · July 18, 2026, 4:04pm

If I’m not mistaken, this isn’t about the charts but about a status history or calculation of those or am I wrong?

Chris75 · July 19, 2026, 8:18am

@guim31 yes maybe, but are the totals (for a day for example) kept as history or recalculated for the graph display?

pierre-gilles · July 23, 2026, 12:16pm

Great news, AI can now answer questions related to the electricity consumption of equipment, in kWh and in euros!

github.com/GladysAssistant/Gladys

feat(ai-chat): answer energy consumption (kWh) and cost questions over date ranges (#2701)

master ← claude/chat-ia-energy-queries-xjrwub

ouvert 11:19AM - 23 Jul 26 UTC

Pierre-Gilles

+537 -1

### Pull Request check-list To ensure your Pull Request can be accepted as fast… as possible, make sure to review and check all of these items: - [x] If your changes affect the code, did you write the tests? - [x] Are server tests passing with coverage? (`cd server && npm run coverage`) — Codecov requires **100% coverage on lines changed in this PR** (all new lines in `buildSchemas.js` are covered by the two new tests) - [ ] Did Cypress E2E tests pass? (`npm run cypress:run` from repo root, if UI changed) — no UI change - [x] Is the linter passing? (`npm run eslint` on both front/server) - [x] Did you run prettier? (`npm run prettier` on both front/server) - [ ] If you are adding a new feature/service, did you run the integration comparator? (`npm run compare-translations` on front) — no front change - [ ] Did you test this pull request in real life? With real devices? — tested with unit tests only; real-life testing with an energy monitoring setup welcome - [ ] If your changes modify the API (REST or Node.js), did you modify the API documentation? — no REST API change, the new tool is documented through its MCP/JSON schema description - [ ] If you are adding a new features/services which needs explanation, did you modify the user documentation? - [ ] Did you add fake requests data for the demo mode (`front/src/config/demo.js`) so that the demo website is working without a backend? — not needed, server-side only ### Description of change This PR lets the AI Chat answer questions like: - « quelle a été la consommation en kWh de la prise onduleur pour la journée du 12 juillet 2026 » - « quel coût en euro pour la consommation de la prise télé pour le mois de juin 2026 » Previously the chat only had `device_get_history`, which works with relative intervals (`last-day`, `last-month`…) and averaged aggregates, so it could neither target a specific date/month nor compute a consumption total or a cost. **What's added:** 1. **New MCP tool `device.get-energy-consumption`** (`server/services/mcp/lib/buildSchemas.js`), exposed only when at least one device has `energy-sensor` features of type `thirty-minutes-consumption` or `thirty-minutes-consumption-cost`. It reuses the existing `device.energySensorManager.getConsumptionByDates()` (same code path as the energy dashboard): - `device`: energy monitoring device name (enum), - `start_date` / `end_date`: inclusive `YYYY-MM-DD` dates (same local-midnight boundaries as the dashboard), - `unit`: `kwh` (consumption, with automatic Wh → kWh conversion) or `currency` (cost, using the cost feature's currency unit), - `group_by`: optional `hour`/`day`/`week`/`month`/`year` detail (defaults to `day`). The response contains the period total first, then the per-period detail. In currency mode, the home electricity contract subscription is returned as a separate `home_subscription` entry so the model doesn't mix it up with the device's own consumption cost. Friendly error messages are returned for unknown devices, invalid dates, or devices without cost tracking configured. 2. **Intent router update** (`gateway.classifyAiChatToolCategories.js`): the `device_query` category description now mentions energy consumption (kWh) and energy cost over a period, so these questions are routed with the right tools. 3. **System prompt update** (`aiChat.prompt.txt`): a rule instructs the model to use `device_get_energy_consumption` with inclusive `YYYY-MM-DD` dates for consumption/cost questions, and never `device_get_history` for consumption totals or costs. 4. **Tests** (`buildSchemas.test.js`): two new tests covering the kWh single-day query, the monthly cost query with subscription entry, the no-cost-tracking case, empty periods, unknown device, invalid/reversed dates, and the tool not being exposed without energy monitoring devices. 🤖 Generated with [Claude Code](https://claude.com/claude-code) https://claude.ai/code/session_01UwzEsLH8BRLUUQu9iUBvYA --- _Generated by [Claude Code](https://claude.ai/code/session_01UwzEsLH8BRLUUQu9iUBvYA)_ ## Summary by CodeRabbit * **New Features** * Added an energy consumption and cost reporting tool for supported smart-home devices. * Supports inclusive date-range queries (YYYY-MM-DD) with daily grouping and totals in kWh or currency. * Includes subscription cost details when available, and adds notes when no data exists for the selected period. * **Bug Fixes** * Energy totals and costs now rely on dedicated energy measurements rather than historical activity. * **Tests** * Added end-to-end coverage for tool exposure, output shaping, and validation/error scenarios.

This will be included in the next version of Gladys

Chris75 · July 23, 2026, 9:20pm

perfect and thank you!

pierre-gilles · July 30, 2026, 8:25pm

It’s available in Gladys Assistant 4.84:

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AI: Ask questions about energy consumption

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