Impacts of a common green certificate market on electricity and CO2-emission markets in the Nordic countries

• The purpose of this study is to analyze the effects of introducing a common Nordic system for tradable green certificates (TGCs)on the electricity market and a future market for tradable CO2-emission permits (TEPs). In the analysis, the energy-system modelgenerator MARKAL was used to model the electricity and district-heating supply systems in the four Nordic countries Sweden,Norway, Finland and Denmark. It is shown that the introduction of TGC quotas reduces wholesale electricity and TEP prices. Theimpact on the latter is very pronounced. Retail electricity prices may become lower or higher, depending on the TGC quota, than ifobligations to fulfill TGC quotas were absent. The TGC scheme’s efficiency in reducing a specific amount of CO2 emissions is alsocompared to the corresponding efficiency of a TEP scheme involving a broader range of technologies. Furthermore, obligations tofulfill TGC quotas affect investment incentives for new non-renewable electricity supply. This seems especially true for gas-firedpower plants. Finally, it is indicated that electricity supply based on biomass combustion dominates the TGC scheme, at least in the short run.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Annan teknik -- Övrig annan teknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)

Nyckelord

Tradable emission permits

Tradable green certificates

MARKAL

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