> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dalyenergy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Pipeline Stages

> Step-by-step physical pipeline from weather inputs to AC output

# Pipeline Stages

The energy-model worker executes a deterministic stage chain.

## End-to-End Sequence

1. Timestamp alignment and weather preprocessing
2. Sun position calculation (Ineichen-style formulation)
3. Surface orientation (fixed or tracker)
4. Irradiance decomposition (`GHI -> DNI + DHI`, Erbs/Erbs-Driesse)
5. Plane-of-array transposition (Perez-family diffuse treatment)
6. Far shading adjustment
7. Near shading adjustment (unlimited or Octavia scene-driven)
8. AOI correction
9. Soiling losses and effective irradiance
10. Cell temperature modeling
11. Optional bifacial augmentation
12. Optional spectral correction
13. DC operating point and module/string scaling
14. AC conversion, clipping, and subsystem losses
15. Aggregation into summary metrics and time-series outputs

## Multi-MPPT Handling

When `dcInputs` are provided, each input path is computed independently at the DC stage, then merged deterministically for inverter-level behavior.

## Async Execution Context

The pipeline runs in the energy-model worker, triggered via task queueing. API returns a queued `200` payload immediately while computation proceeds in background.