Pre-registration
The onshore wind learning curve continued through the 2020-2024 supply-chain, commodity-price, and inflation shocks. Global onshore-wind levelised cost of electricity (LCOE) in 2024 remained below 2019 levels in real terms, and the 2010-2024 cost-capacity learning slope did not flatten materially relative to the 2010-2019 slope.
Falsification criterion — what would disprove this
This hypothesis is considered falsified if:
SUPPORTED if 2024 onshore-wind LCOE is below 2019 LCOE, the full 2010-2024 learning slope retains at least 85% of the absolute 2010-2019 slope, and the post-2020 flattening interaction is not positive and significant at p<0.10. PARTIAL if the LCOE level improves but one slope condition fails. REFUTED if 2024 LCOE is above 2019 or the full-sample learning slope retains less than 70% of the pre-2020 slope.
formal test & threshold
test: onshore_wind_learning_curve_2010_2024 threshold: 2024 LCOE < 2019 LCOE; slope retention >= 0.85; no significant positive post-2020 slope interaction.
Method
- Template
descriptive- Sample
- 1 countries · 2010 – 2024
- Evidence type
- associational
Fit log(global onshore-wind LCOE) on log(global installed wind capacity), first for 2010-2019 and then for 2010-2024. Compare the implied learning rate per capacity doubling. A post-2020 interaction tests whether the slope materially flattened during the shock period.
Data
| Variable | Source | Transform |
|---|---|---|
log_onshore_wind_lcoe_usd_per_mwh outcome | irena:lcoe_wind_onshoretier 2 | log |
log_cumulative_installed_wind_capacity_mw treatment | irena:installed_capacity_windtier 2 | log |
post_2020_supply_chain_shock_dummy treatment | constructed:indicator = 1 from 2020 onwardtier 5 | indicator |
● ready · ● pending · ● reconstruct-needed
Strongest opposing argument
Every hypothesis ships with its charitable opposing argument. The framework earns credibility by handling objections at their strongest, not weakest.
Notes
Created during the 2026-05-15 diverse data unlock pass after the IRENA onshore-wind LCOE workbook and installed-capacity panel were confirmed available locally.