33 lines
1.4 KiB
Markdown
33 lines
1.4 KiB
Markdown
---
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type: permanent
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status: verified
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source: "manohargupta.com/journal/8760-energy-simulation (2026-02-15)"
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tags: [knowledge, solar, finance, modeling]
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---
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# 🌞 The 8760 Energy Simulation Model
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> An atomic concept note, distilled from Manohar's own explainer.
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## What "8760" means
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**8,760 = hours in a year** (365 × 24). An 8760 model builds an **hourly profile of expected solar generation for every hour of the year** — not daily/monthly averages.
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## Why hourly granularity matters (for project finance)
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- **Solar variability** — peaks at noon, zero at night
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- **Grid constraints** — hourly profiles reveal **clipping & curtailment** risk
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- **Revenue forecasting** — **time-of-day pricing** changes economics
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- **Degradation** — performance shifts hour-by-hour across the asset's life
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## Key inputs
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- Irradiance: **GHI, DNI, DHI** · temperature
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- System specs: module type, **tilt, azimuth**
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- Loss factors: soiling, shading, inverter efficiency
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## The method (Manohar's approach)
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**Python + Pandas** for flexible custom analysis, **validated against PVsyst** for industry credibility.
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> **Key takeaway:** *Never rely on simple capacity-factor estimates for serious project-finance work.* The hourly shape is where the risk (and the money) lives.
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## Used in
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[[REModel]] · [[8760 Energy Simulation]] · the [[Renewables Overview|ReNew]] day job
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## Related
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[[Renewables Overview]] · [[Finance Overview]] · [[MOC - Renewables]]
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