Cornstover-to-ethanol reference case

Use the published BioSTEAM cornstover model for a reproducible TEA, foreground-impact, and uncertainty sanity workflow.

1. Load the published model

text

build_system(model_name="cornstover")
→ get_tea_results(result_id=...)

The repository reliability check compares this MCP path with an independent direct BioSTEAM API subprocess and records identical FCI, FOC, VOC, NPV, and MSP values.

2. Check the reference TEA

Metric	Repository reference
Units	68
Ethanol output	≈21,978 kg/h
MSP	≈$0.6926/kg
Installed equipment cost	≈$210.0 MM
FCI	≈$359.8 MM
FOC	≈$9.8 MM/yr
VOC	≈$72.6 MM/yr

Note

These are reproducibility values for the published BioSTEAM reference model. They are not current project cost estimates.

3. Keep the foreground-impact boundary explicit

text

get_lca_results(
  result_id=...,
  indicator="GWP",
  cfs={"cornstover": 0.05, "electricity": 0.45}
)

Warning

get_lca_results applies caller-supplied foreground characterization factors to feeds/electricity. It is not a full background-database cradle-to-gate LCA unless the supplied factors already represent that boundary.

4. Reproduce the uncertainty sanity pattern

The reliability study records P5 = 0.6253, P50 = 0.7026, and P95 = 0.7901 $/kg MSP around the deterministic MSP ≈ 0.6927 $/kg.

Recorded Spearman directions are physically interpretable: feedstock price has ρ ≈ +0.952 with MSP, while electricity price has ρ ≈ -0.29 because the reference model exports excess electricity.

Note

These statistics are an internal-consistency qualification of the uncertainty/sensitivity path, not an external uncertainty benchmark.