Production assessment · 90 days

System performance record

Sample data

Within expected range

94%

actual ÷ modeled expected

This sample system is producing within the modeled range.

Over this 90-day window, recorded production was 94% of the weather-adjusted model. After accounting for model uncertainty, the result still overlaps the expected range. No service referral is indicated by this read.

60%70%80%90%100%110%120%

Assessment range 85–104%Reference range 85–100%

Window: 90 days
Recorded production · kWh: 3,384.0
Modeled expected · kWh: 3,600.0
Model / weather source: v0.1.0 / sample

What this result cannot see

The expected value is modeled, not measured. Tree growth and other shading changes can reduce production and are not visible to this method. Soiling and inverter clipping also add uncertainty. This report does not identify a hardware fault or its cause.

Sample comparison window: May 1–July 29, 2026, America/New_York. Irradiance source: demonstration fixture, not a live historical-weather feed. Model: weather-ratio-v0.1.0.