INDUSTRY FIELD GUIDE
Solar generation and irradiance alignment data for AI
Power and irradiance can look unrelated when their records use different timestamps.
NAICS 221114 · Solar Electric Power Generation
Power and irradiance can look unrelated when their records use different timestamps. The public PVDAQ datasets provide examples of photovoltaic observations and associated documentation. A solar operator can propose a narrow timing exercise using artificial traces before discussing any real records. PVDAQ public datasets
Create a fictional power series and an irradiance series from the same training interval. Shift one clock, document the reference time, and add a genuinely missing interval. Ask which observations can be aligned and which cannot be recovered from the sample. Require the model to distinguish a recorded zero from a missing measurement.
Use invented time series or verified public data within its terms. Keep site layouts, equipment configuration, private performance, precise locations and access details out of the example.
Describe a solar time-alignment sample
Original Fiund exercise
Align an artificial fast clock without filling missing power
Fictional power and irradiance labels illustrate timing and missingness. No site performance, equipment configuration or actual measurement is represented.
| Record | Source | What it records |
|---|---|---|
| CLOCK-S1 | Practice clock note | The irradiance logger reads five minutes fast relative to the UTC reference used by the power series. |
| POWER-S2 | Artificial power series | At reference 13:05, the recorded value is zero. The 13:10 observation is missing. |
| IRRAD-S3 | Artificial irradiance series | Logger times 13:10 and 13:15 both contain recorded values. The note states no other correction. |
Question for the model
Which irradiance timestamp aligns with the known zero, and can the missing power observation be recovered from this packet?
Show the reference answer and checks
Subtract five minutes from the irradiance logger's time under CLOCK-S1. Its 13:10 observation aligns with reference 13:05, where power is a recorded zero. Its 13:15 observation aligns with reference 13:10, where power is missing. An irradiance value does not supply the absent power reading. Preserve the known zero and the missing observation as different states.
- Adding the clock offset in the wrong direction.
- Replacing a missing power observation with zero.
- Inventing a power value from a different measured quantity.
Fields to preserve
- Clock reference and offset
- Document which clock is fast and the direction of correction.
- Observation presence
- Distinguish a recorded value from an absent measurement.
- Quantity identity
- Keep power and irradiance as separate series.
Test another case
Change the note to a logger that reads five minutes slow. Alignment should reverse without changing the missingness rule.
The traces and offset are invented. Exclude layouts, access details, precise locations and private generation records. The answer makes no equipment diagnosis.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.