TY - UNPB

T1 - Information Aggregation in Emissions Markets with Abatement

AU - Cantillon, Estelle

AU - Slechten, Aurelie Cecile Dominique

PY - 2018/11

Y1 - 2018/11

N2 - A key policy argument in favor of emissions markets (relative to command-and-control types of regulation) is their ability to aggregate dispersed information and generate price signals to guide firms' trading and abatement decisions. We investigate this argument in a multi-period model where firms receive noisy private signals about their current period emissions and privately observe their previous period emissions before this information is made public to the rest ofthe market. Firms respond to information by trading and abating emissions. We show that there exists a rational expectations equilibrium that fully aggregates firms' private information, justifying the policy argument in favor of emissions markets, in the absence of other frictions. We also derive predictions about how prices should be reacting to new private or public information and show that the possibility of abatement dampens the impact of shocks on prices. Finally, we show that the information aggregation result breaks down if firms' abatement costs are also private information.

AB - A key policy argument in favor of emissions markets (relative to command-and-control types of regulation) is their ability to aggregate dispersed information and generate price signals to guide firms' trading and abatement decisions. We investigate this argument in a multi-period model where firms receive noisy private signals about their current period emissions and privately observe their previous period emissions before this information is made public to the rest ofthe market. Firms respond to information by trading and abating emissions. We show that there exists a rational expectations equilibrium that fully aggregates firms' private information, justifying the policy argument in favor of emissions markets, in the absence of other frictions. We also derive predictions about how prices should be reacting to new private or public information and show that the possibility of abatement dampens the impact of shocks on prices. Finally, we show that the information aggregation result breaks down if firms' abatement costs are also private information.

KW - emissions trading

KW - Information aggregation

KW - efficient market hypothesis

KW - price formation

M3 - Working paper

T3 - Economics Working Papers Series

BT - Information Aggregation in Emissions Markets with Abatement

PB - Lancaster University, Department of Economics

CY - Lancaster

ER -