The European Union (EU) is advancing various policies and activities with the goal of achieving carbon neutrality by neutralizing greenhouse gas emissions by 2050. In contrast, South Korea has set an objective to reduce its emissions by 40% from the 2018 levels by 2030. According to a survey by the Federation of Korean Industries, South Korea is anticipated to face an additional carbon tax burden ranging from KRW 7 trillion to 36 trillion annually. This study proposes a platform service where individuals can store eco-friendly energy sources, like solar power, in the Energy Storage System (ESS) and, after usage, trade the surplus energy with others using blockchain-based coins and tokens. The coins utilized for energy trading in this research are employed in either private or public exchanges to structure energy markets. Users purchase these coins from exchanges and convert them into tokens to charge electrical energy. It is hoped that through the methodology presented in this study, the direct production of green energy and the subsequent reduction in greenhouse gas emissions will represent a significant stride toward achieving carbon neutrality.