在全球節能減碳的潮流下，使用替代能源成為世界趨勢，將太陽能電池應用在建築上逐漸變成設計規劃的主流。本研究將探討消費者購買家庭用太陽光電系統時的不確定性因素，造成消費者租賃太陽光電系統與購買之間的願付價差（Willingness To Pay, WTP），並利用不確定性因素得分做為分群依據，以及探討消費者對環境關切的重視程度與採用意願或租賃意願的關係。本研究首先選定系統發電量、每月租金、租期、故障頻率四個屬性，運用聯合分析法（Conjoint Analysis, CA）分析消費者對太陽光電系統屬性水準的偏好結構，並進一步計算租賃與購買的願付價差；藉由消費者的不確定性因素建構出不確定性因素的重視程度和租與購願付價差的結構方程式，以及環境關切的重視程度與租賃意願的結構方程式。研究結果有政府補助獎勵、系統價格、系統壽命、故障頻率、技術太換速度、電價上漲幅度等六項不確定性因素，並將消費者分為高疑慮群（不確定得分高者）及低疑慮群（不確定性得分低者），高疑慮群及低疑慮群之租與購願付價差分別為1969元/月及509元/月，並分別受電價上漲幅度及系統壽命、故障頻率、電價上漲幅度影響。最後，消費者對太陽光電系統之租賃意願顯示與環境關切重視程度相關。

Following the trend of saving energy used and reducing carbon produced of the whole world, to use the alternative energy becoming popular. The research discussed whether the uncertain factors that consumers considered while they buy the household photovoltaic systems cause the willingness to pay (WTP) for leasing contrast to purchasing or not.

The research selected four attributes of the household photovoltaic systems which included capacity, monthly rental price, contract period, reliability. Used conjoint analysis (CA) to measure consumers' preferences of the household photovoltaic systems, and further calculated the willingness to pay for leasing contrast to purchasing. Use the part worth utility of photovoltaic systems, we can construct two regression functions as following, one is consumers' willingness to pay and uncertain scores, and the other is consumers' will to lease and environmental concern.

The result showed six uncertain factors that included subsidies, prices, life-span, reliability, technology replacement rate, electric price. The high one of uncertain score is named the high doubted group, and the other is named the low doubted group, and the WTP is NT$1969 and NT$509 every month respectively. The WTP of two groups were influenced by electric price and life-span, reliability and electric price respectively. Finally, consumers' will to lease is affected by environmental concern.

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網頁部分
1. 美國Citizenre REnU 太陽光電租賃公司網站
http://renu.citizenre.com/index.php
2. 美國Solar City 太陽光電租賃公司網站
http://www.solarcity.com/
3. 美國CT Solae Lease 太陽光電租賃網站
http://www.ctsolarlease.com/
4. 經濟部能源局
http://www.moeaboe.gov.tw/Default.aspx?group=2
5. 太陽光電資訊網
http://solarpv.itri.org.tw/memb/main.aspx
6. 台灣電力公司
http://www.taipower.com.tw/
7. 美國再生能源獎勵政策資料庫
http://www.dsireusa.org/summarytables/finre.cfm
8. 拓墣產業研究所
http://www.topology.com.tw/tri/
9. 日本太陽光電協會
http://www.jpea.gr.jp/
10. 工業技術研究院
http://www.itri.org.tw/
11. 小馬租車
http://www.ponyrent.com.tw/short/short.html