How to read a solar monitoring dashboard

Start with the units

kW tells you the rate right now; kWh tells you the energy over a period. A steady 1.2 kW load running for half an hour uses 0.6 kWh. A brief spike to 3 kW does not mean the house used 3 kWh. This distinction is explained in the U.S. Energy Information Administration’s guide to electricity units.

Use the live screen to answer “what changed when that appliance started?” Use history to answer “how much did we use overnight?” Comparing an instantaneous solar peak with a whole-day consumption total will not answer either question.

Read one moment, then watch the change

Now suppose the kettle starts and the load rises. Watch whether solar stays steady, charging slows, or the battery begins discharging. The change across two fresh observations is often easier to interpret than a single diagram. Do not assume the graphic accounts for a circuit that your equipment does not measure.

Check where each number came from

An inverter can report battery-terminal voltage without reporting individual battery cells. A charge controller’s output describes its charging circuit; it is not necessarily the entire house’s consumption. A pack’s BMS reports that pack, not every battery in the building.

In Sunstead, the Equipment page is the place to identify the responding devices. The live view distinguishes partial or stale data. A dash means a reading is unavailable; it does not mean zero. If one of several detected packs stops responding, avoid treating a partial bank as a complete inventory.

Keep this short note beside your first week of readings: which device supplies solar power, which supplies load, whether a BMS is connected, and whether grid power is actually reported. That note explains many apparent contradictions without changing any equipment setting.

Use history to find a specific pattern

Choose a question small enough to check. For example: “What is our overnight baseline between midnight and 5 a.m.?” Compare several nights with similar occupancy, and note unusually large loads. A five-hour average of 0.25 kW represents 1.25 kWh; it does not identify which appliance used it.

Next, look for gaps. Sunstead accumulates live energy from valid measured intervals. Missing observations cannot establish what happened while the connection was down. A low total after a long data gap is not evidence of an unusually efficient day. Use matching time ranges and comparable data coverage before drawing a conclusion.

A useful daily check takes four questions

1. Are the readings fresh? Check connection and sample status before interpreting the values.
2. What is powering the load? Read solar, battery direction and any available grid measurement together.
3. What changed? Compare the current pattern with a similar time yesterday, allowing for weather and household activity.
4. What remains unknown? Record missing circuits, packs or measurements instead of filling the gaps mentally.

If the battery percentage is the confusing part, the next guide explains why state of charge and voltage can disagree. If you are still choosing equipment for a display, start with the compatibility worksheet.