Two questions the assistant answers with a result, not just with numbers: "do the figures add up?" and "how is the plant doing compared with what is expected?".
Do the figures add up?
The energy entering a plant has to match the energy leaving it, apart from small losses. The assistant compares production, consumption, grid and battery and tells you whether the gap is within tolerance (normally 5%).
| Ask | What you get |
|---|---|
| "Do yesterday's figures add up?" | Within or outside tolerance, with the difference in kilowatt-hours |
| "Check this week's energy balance" | The same result over the week |
| "Check the last 6 hours" | The check over a window of your choice, up to 24 hours |
If the gap is outside tolerance, one measurement is not reliable: for example a meter read backwards or missing data. It does not mean energy was really lost. The assistant tells you how large the difference is, not what causes it: that needs someone who looks after the plant.
Plant indicators
For a day, a week or a month the assistant computes a few indicators:
- battery efficiency: how much energy it gives back compared with what it received, rated "normal", "above" or "below" the reference
- availability: how long the plant was running; if you give it a threshold, it tells you whether it was met
- time under blocking alarms: the share of time the plant was stopped by an alarm, with the longest episodes
- peak shaved: by how much the battery reduced the maximum power drawn from the grid
| Ask | What you get |
|---|---|
| "How are September's indicators?" | All indicators for the month |
| "Did the plant meet 98% availability?" | Yes or no, with the value reached |
| "How long was it in alarm this week?" | The percentage and the longest episodes |
| "How much peak did the battery shave?" | The value in kilowatts |
The indicators say how long the plant was in alarm, not which alarms: that detail is not part of the answers for customers and installers.