Quasi-Bayesian Local Projection Instrumental-Variables Method: Application to Renewable Energy and Electricity Prices
Abstract
This paper introduces a quasi-Bayesian approach for local projection instrumental-variables (LP-IV) estimation. It builds a moment-based quasi-posterior using the generalized method of moments (GMM) objective and applies a roughness-penalty prior to smooth impulse responses over different horizons. The approach maintains the key first-order features of traditional LP-IV methods, while enhancing stability in finite samples and allowing for joint inference through simultaneous bands. Simulations indicate that this regularization decreases root mean squared error compared to standard GMM, especially at medium and longer horizons. An application to Danish electricity markets highlights the method's practical usefulness.
Keywords
Cite
@article{arxiv.2605.15966,
title = {Quasi-Bayesian Local Projection Instrumental-Variables Method: Application to Renewable Energy and Electricity Prices},
author = {Masahiro Tanaka},
journal= {arXiv preprint arXiv:2605.15966},
year = {2026}
}
Comments
This paper supersedes a working paper circulated under the title "Quasi-Bayesian Local Projections: Simultaneous Inference and Extension to the Instrumental Variable Method" (arXiv:2503.20249)