【Brownbag】Cap or Tax? Experimental Evidence on Carbon Policy under Market Power with Real Emissions
2026/01/23
研討會日期 : 2026-01-23
時間 : 12:10
主講人 : Professor Wei James Chen (陳暐)
地點 : Conference Room B110
演講者簡介 : Professor Wei James Chen received his Ph.D. in Economics from the Ohio State University in 2017. He is currently an Assistant Professor at National Taiwan University. His research fields are Behavioral/Experimental Economics, Neuroeconomics, and Decision Theory.
演講摘要 : This paper presents laboratory experimental evidence comparing carbon taxes and emissions trading schemes under conditions of market power. We implement a multi-stage design with 15 firms (3 dominant, 12 competitive), real emission accounting, and a continuous double auction market for permits. The treatments vary by policy regime (tax vs. trading), stringency (low, medium, high levels), and allocation rules (equal vs. grandfathering). Our results show that both policies reduce emissions, but trading achieves larger reductions while taxation preserves greater welfare. Equal allocation of permits improves both surplus and emission outcomes relative to grandfathering, mitigating monopsony distortions in price formation. These findings highlight the critical role of market structure and allocation rules in determining the effectiveness of carbon pricing instruments, with implications for the ongoing global expansion of emissions trading and tax systems.
