我國太陽光電競標制度之研究

再生能源競標制度是拍賣行為的一種，其購買需求端-政府，而參與競爭的競標者則為提供者-太陽光電系統設置者。本研究將拍賣理論應用在我國太陽光電競標實證上，以瞭解競爭程度變動如何降低政府基金支出。其中，以競標件數、競標容量、目標容量、得標件數、得標容量代表競爭程度，而以各次標案最終平均得標折扣率代表再生能源躉購費率的基金支出下降的成效。本研究透過相關法規、子法及公告之整理蒐集，將我國太陽光電競標制度應用於拍賣模式中的基本性質，並透過100~105年間的實證數據，先以敘述性統計方式歸納不同級距間及不同年度間競標市場的變動趨勢。並針對競標件數、競標容量、目標容量、得標件數、得標容量對於平均得標折扣率的影響提出若干假設，再以縱橫資料迴歸模型進行驗證。研究結果顯示，太陽光電競標市場的參與競標件數越多、參競標之容量越大，平均得標折扣率越大。此與拍賣理論的相關實證研究結果一致。

關鍵字

太陽光電；競標；拍賣；拍賣理論；再生能源

並列摘要

The renewable energy bidding system is a kind of auction behavior, and the bid is held by the demand side (government), while the bidders who actually participate in the competition are the providers (solar photovoltaic setter).This article applies the auction theory to the result of solar photovoltaic auction in Taiwan to understand the relationship between the degree of competition and its impact on reducing the expenditure of renewable energy development fund in Taiwan. The number of bidding items, bidding capacity, target capacity, number of winning bids, and winning bidding capacity are taken as the representative of the degree of competition in this research. The effectiveness of reducing the expenditure of renewable energy development fund is represented by the average discount rate. This study collects some basic properties of solar photovoltaic bidding system in the auction mode through compiling relevant government regulations, sub-laws and announcements, and uses the empirical data of the renewable energy bidding system dated from year 100 to 105. Descriptive statistics methods are used to summarize the trend of bidding market between different grades and different years of solar photovoltaic auction, with stated assumptions on the impact of bidding number, bidding capacity, target capacity, number of winning bids, and bidding capacity on the average discount rate. Then, the panel data regression model is used for verification. The research results show that the more the number of participating bids and the larger the amount of participating capacity in solar photovoltaic bidding market, the greater the average discount rate. This is consistent with the empirical research result of the auction theory.