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Korea Photovoltaic Society (한국태양광발전학회)
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Comparative Economic Analysis of RE100 Implementation Methods in South Korea

국내 RE100 이행방안의 경제성 비교분석 연구

  • An, Sang Hyo (Energy Environment Policy and Technology, Graduate School of Energy and Environment (KU-KIST Green School), Korea University) ;
  • Woo, JongRoul (Energy Environment Policy and Technology, Graduate School of Energy and Environment (KU-KIST Green School), Korea University)
  • 안상효 (에너지환경정책기술학과, 에너지환경대학원(그린스쿨), 고려대학교) ;
  • 우종률 (에너지환경정책기술학과, 에너지환경대학원(그린스쿨), 고려대학교)
  • Received : 2022.05.27
  • Accepted : 2022.06.08
  • Published : 2022.06.30
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Abstract

The Global RE100 campaign is a one of the voluntary campaign, but it has a lot of influence on domestic companies that have not yet joined the Global RE100. Accordingly, the Korean government introduced the Korean RE100 (K-RE100) system to prepare an institutional mechanism for domestic companies to respond to RE100. However, in Korea, due to the high LCOE of renewable energy and institutional limitations of the power transaction system, there is a limit for companies to implement RE100 in various ways. Therefore, in this study, the implementation cost of RE100 for green tariff, REC purchase, third-party PPA, direct(or corporate) PPA, and self-generation was compared and analyzed to derive the order of implementation with the net present value (NPV) of costs incurred over 20 years. As a result, self-construction was analyzed as the most economical method, but the implementation through the green tariff seemed to be the most realistic implementation method so far. However, considering the gradually falling LCOE, third-party PPA and direct PPA could be secured competitiveness against green tariff in 2025 and 2026. Then it could allow the companies to have various portfolios for implementation of RE100.

Keywords

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