PV MPPT widgets

What these widgets are for

A solar array's MPPT (Maximum Power Point Tracker) channels are where the action happens electrically — each MPPT has its own voltage, current, and power, and looking at them individually is how you tell a healthy string from a shaded or faulty one. myPower has two MPPT-focused widgets that cover live and historical views of the same data:

• PV Real-Time Data — a compact live readout of one chosen MPPT's electrical metrics. Useful for on-site diagnostics or for keeping an eye on a specific channel.
• PV MPPT History — a chart that plots one MPPT's power, voltage, or current over a chosen period. Useful for comparing days, spotting performance drift, and investigating an issue after the fact.

For the overall PV total (all MPPTs combined) use the PV Power live status icon or the PV Devices live icon. For a hot-cold view across many devices at once, use the Operational Heatmap chart.

Companion guides

• Dashboard overview — how to add, move, resize, and remove widgets.
• Live status icons — the family of single-value live readouts, including PV Power.
• Device Historical Analytics chart — when you need full multi-field plots across many devices, not just one MPPT.

Where to find them

Open the Dashboard, click the pencil icon to enter edit mode, then click Add New Widget. Search for PV Real-Time Data or PV MPPT History and click Add Widget. The Real-Time widget is a compact 2 × 1 tile; the History chart is larger.

PV Real-Time Data — what it shows

A compact tile streaming the latest readings from one selected MPPT of one selected PV device. By default it shows three metrics:

• Power (W)
• Voltage (V)
• Current (A)

Each updates as new samples arrive.

Choosing the MPPT

Open the gear icon. The settings dialog has:

• Select Device MPPT — a tree picker showing each PV device's MPPT channels (e.g. PV-Manager-01 → MPPT 1 / MPPT 2 / MPPT 3). Pick one.
• Display Options — three checkboxes to Show Power, Show Voltage, and Show Current. Turn off any you don't need.

The tile updates instantly when you change the selection or the display toggles.

PV MPPT History — what it shows

A line chart for one MPPT over one of power, voltage, or current, across a chosen date or date range. The chart uses the same toolbar conventions as the other history charts: date picker, magnifier (zoom), download, gear.

Choosing what to plot

Open the gear icon. The settings dialog has:

• Chart Title — the header text.
• MPPT picker (tree) — pick one MPPT (one PV device → one MPPT). The chart updates the title with the selection so you don't lose track of which one you're looking at.
• Metric — pick exactly one of power, voltage, or current. Switching between them keeps the same MPPT selection.

The chart redraws when you change the MPPT or the metric.

Reading the chart

• Hover to see the value at any time; click the chart to pin the tooltip.
• A gap in the line means no data for that window — sensor offline, gateway down. Deliberately not drawn through, so missing data doesn't look like "true zero".
• For voltage and current, a flat line near zero overnight is normal — the array isn't producing.

Who can do what

• Any signed-in user can add either widget, pick an MPPT, choose which metrics to display, and read values. Both widgets are read-only — they never send a command back to a device.

Common issues

• The MPPT tree is empty. The site's PV device metadata hasn't loaded, or there are no MPPT-capable PV devices. Wait for the page to finish loading; if it stays empty, raise it with support.
• The Real-Time tile says "--" for one metric. Either the device isn't reporting that metric, or the metric checkbox is on but the live stream hasn't delivered a value yet. Confirm by switching to one of the other metrics — if that one updates and the original stays dashed, the device isn't sending it.
• History chart shows "No Data For Time Period". The selected MPPT didn't report on the chosen date(s). Try a different date or pick a different MPPT on the same device to verify the device was online.
• Power doesn't match Voltage × Current exactly. That's expected — there are measurement timing differences and the displayed values are rounded. Treat power as the authoritative figure when reporting.

Tips and gotchas

• Use the Real-Time widget at install time, the History widget afterwards. Install / commissioning teams want to see each MPPT come alive; operations teams want to see how it has been performing across days.
• For multi-string sites, the Real-Time tile beats a single PV Power icon. PV Power averages everything together; the Real-Time tile lets you see which MPPT is the underperformer.
• History chart pairs well with Device Historical Analytics. History plots one MPPT, one metric. The Device Historical Analytics chart can plot many devices and fields together — use it to compare two MPPTs against each other.
• Both widgets refresh with the dashboard. When Auto Update is on in your View Settings, both pick up new readings as the dashboard ticks.