Panel by panel

Twelve of the 24 panels have their own optimiser, so each one is measured on its own. Here they are on a photo of the frame, right now or over any period you choose.

13 October 2026

Right nowor a period:

The tilted frame seen from the lawn, photographed on 17 September 2026. Each panel carries what it produced over 13 October 2026.

Tint: energy per kilowatt peak, compared with the best of the twelve over this period.under 80 %80 to 90 %90 to 95 %95 to 99 %99 % and over

Energy produced by each optimised panel over the period, and how long each one was measured.
Panel	Technology	Peak power (Wp)	Energy (Wh)	Wh per kWp	Measured for
M1 Panel 1, monocrystalline	Monocrystalline	280	18	63	4.3 h
M2 Panel 2, monocrystalline	Monocrystalline	280	21	74	4.5 h
M3 Panel 3, monocrystalline	Monocrystalline	280	19	66	4.4 h
M4 Panel 4, monocrystalline	Monocrystalline	280	18	63	4.4 h
M5 Panel 5, monocrystalline	Monocrystalline	280	19	67	4.5 h
M6 Panel 6, monocrystalline	Monocrystalline	280	19	67	4.4 h
P1 Panel 1, polycrystalline	Polycrystalline	275	18	65	4.6 h
P2 Panel 2, polycrystalline	Polycrystalline	275	21	76	4.5 h
P3 Panel 3, polycrystalline	Polycrystalline	275	20	74	4.5 h
P4 Panel 4, polycrystalline	Polycrystalline	275	17	62	4.6 h
P5 Panel 5, polycrystalline	Polycrystalline	275	17	62	4.6 h
P6 Panel 6, polycrystalline	Polycrystalline	275	21	75	4.5 h
Vertical array 12 modules, 6 frames	Thin film CIGS	120 each	Not measured individually: these modules have no optimiser. Their total is on the live page, as array 3.

The twelve panels were not measured for the same length of time over this period: from 4.3 to 4.6 hours. A panel that was measured less will show less energy for a reason that has nothing to do with the panel. The last column of the table says how long each one was measured.

How even is each row

How much less the weakest panel of a row produces than the strongest, in percent of the strongest. This is a calculation made from the twelve measurements above, not a measurement of its own.

The six panels of a row see the same sky, so they should produce about the same share of their peak power. One that falls behind points to shade, dirt, snow or a fault. Over a period, a passing cloud no longer matters.

Upper row, monocrystalline

Strongest: M2, 74 Wh/kWp
Weakest: M4, 63 Wh/kWp
Difference (calculated): 15 % less

6 of the 6 panels of this row answered. The weakest, M4, produces 15 percent less than the strongest, M2 (63 Wh/kWp against 74 Wh/kWp). Over a period, a difference above about 5 percent deserves a look at that panel.

Lower row, polycrystalline

Strongest: P2, 76 Wh/kWp
Weakest: P5, 62 Wh/kWp
Difference (calculated): 19 % less

6 of the 6 panels of this row answered. The weakest, P5, produces 19 percent less than the strongest, P2 (62 Wh/kWp against 76 Wh/kWp). Over a period, a difference above about 5 percent deserves a look at that panel.

How to read these numbers

Direct current, before the inverter. The inverter loses a few percent, so the sum of these panels is more than the lab delivers. The real production is on the live page.
The vertical array is not shown. Its twelve modules have no optimiser, so they are only measured together, as array 3.
Read through Tigo. The optimisers report to the Tigo cloud and this site reads the values from there.

Each panel's history can be charted and downloaded on the data page. The three arrays are compared on key figures and records.