再生能源憑證與排放權交易之互動關係

氣候變遷日趨嚴重，許多國家已開始施行減緩氣候變遷的政策，ETS則是當中常見的工具之一；另一方面，因應能源危機，各國亦施行促進再生能源發展的政策，同時因為再生能源排放量較低的特性而能降低排放。在ETS以及REC兩種政策同時施行的情況下，可能會造成重複管制降低總體溫室氣體排放量的情況，故本文從過往文獻當中整理出兩種政策可能有的互動關係：無互動、直接互動以及間接互動，其中直接互動當中又可分為交易互動以及非交易互動。歐美兩地區目前已就ETS以及REC兩政策互動關係進行調整，而台灣在未來亦有可能同時施行ETS以及REC，故本文依據台灣目前引進RPS並將REC排放係數訂為0的情況下，參照歐美兩地區的實例，認為台灣在REC自願性市場可參考加州以及RGGI的案例；強制性市場則可參考加州內ETS與RPS的案例。除此之外，筆者亦認為ETS以及REC兩種政策工具在調和時，立法的技術層面應考量管制對象、單位以及登錄處等，力求避免兩政策工具之間產生衝突而削弱排放減量的目標。

關鍵字

再生能源憑證；排放權交易制度；互動關係

並列摘要

When ETS and REC are enforced at the same time in a region, it may cause double-regulation and reduce the effect of emission reduction. The interaction between ETS and REC has been the subject of much research in these decades. According to the research, there are three types of interaction, non-interaction, direct interaction and indirect interaction. Besides, there are two subcategories of direct interaction, tradeable interaction and non-tradeable interaction. Now the interaction between these two has been adjusted in Europe and American and Taiwan is going to enforce these two in the coming future. This thesis refers to the sample from Europe and American, and find out that the sample of California and RGGI are suitable for Taiwan to make a reference. Besides, we also suggest legislator to consider regulated-party, unit and register when drafting the law in order to reduce the counter-effect between ETS and REC.