ENERGY COST WORKBENCH / BROWSER EDITION

Make the assumptions
behind energy cost visible.

A transparent tour through levelized cost, discounted cashflows, and the assumptions that move them.

ƒThreadmark enginePython calculations · synthetic inputs

iRead-only sample studies. Values were generated by the actual Threadmark Python engine. This static page does not host workspaces, accept private inputs, or connect to live Astra reviews.

SYNTHETIC CASE

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Cost across the library

Levelized cost · lower is less cost per delivered MWh

/MWh

Present-value cost mix

Discounted cost by accounting category

NPV

MODEL BASIS

Same accounting rules for every case

Costs and delivered energy are discounted from the start of construction. Inputs are synthetic illustrations; technology labels do not validate the assumptions.

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One-way sensitivity

Change one input at a time within a bounded range.

LCOE swing

This is a deterministic scenario test. It assigns no likelihood to either endpoint.

Illustrative input range

120 seeded draws across three independent triangular inputs.

synthetic

Driver endpoints

Each row varies only its named input; other assumptions stay fixed.

Input	Low input	LCOE at low	High input	LCOE at high	Absolute swing

Hypothetical future commissioning cohorts

Plant capex changes by −2% each year; all other inputs are held fixed.

same price basis

Commission year	Plant capex / kW	LCOE / MWh	Change vs. base

METHOD & BOUNDARIES

Useful comparison starts with comparable assumptions.

Threadmark calculates levelized cost as discounted costs divided by discounted delivered energy. This browser edition presents fixed synthetic fixtures calculated locally during dataset generation.

Discounting

Real annual discount rate. Construction capital is split evenly across construction periods; first operating energy arrives at period C+1.

Energy & costs

Generation uses 8,760 hours per year. Fuel and variable O&M apply to generation before curtailment; storage is an annual shifting proxy.

Interpretation

Results exclude taxes, debt, hourly dispatch, system value, and lifecycle emissions. They are not market forecasts, bids, or investment advice.

Model · Synthetic sample dataCC0-1.0 license · Provenance & rights

Make the assumptionsbehind energy cost visible.