本研究針對先進國家「用戶群代表」制度之政策與法規進行探討，並進一步探討如何施行於台灣電力市場。首先定義並解釋「用戶群代表」涵意後，整理出先進國家(包含美國、歐盟、德國、澳洲、韓國五個地區與EnerNOC、Comverge、CPower、OhmConnect四個公司)的用戶群代表商業模式案例，藉由文獻分析與個案研究，觀察先進國家政策方向與用戶群代表市場定位差異。同時，本研究由我國用戶群代表相關制度法規，探討用戶群代表於我國電力市場實施之適法性。此外，本研究根據文獻回顧整理出發展用戶群代表制度的關鍵成功因素，並詳細探討我國當前條件是否適合發展。最後針對政府與台電、產業界、學術界、電力用戶的不同角度，提出可行的政策法規建議。 / This thesis explores the policies and regulations of aggregator systems in advanced countries and explores how to implement aggregator system in Taiwan electricity market. In order to achieve this objective, we first define and elaborate the meanings of aggregator. Then, experience and case studies of USA, European Union, Germany, Australia and Korea are studied. In addition, business models of four aggregators, EnerNOC, Comverge, CPower and OhmConnect are presented. Furthermore, we examine current related regulations of an aggregator in Taiwan electricity market for feasibility analysis. In addition, this study summarizes the key success factors of the development of aggregator systems according to the literature review, and discusses in detail whether Taiwan's current conditions are suitable for development. Finally, market models and policy regulations in relation to the aggregator are recommended.