能源技術服務模式於綠島LED路燈節能績效之研究

由於石化燃料的大量使用以及溫室氣體的急遽增加，世界各國開始重視環保與氣候變遷等議題；近年來，更由於能源價格的升高，推升了發電成本；因此在綠色能源尚未廣泛運用的情況下，政府也積極推動節能減碳政策。為因應以上現況，能源技術服務業 (Energy Service Company, ESCO) 衍生而出，期能協助政府與能源用戶規劃並推動節能工作。然而，在諸多節能模式中，如何因應能源用戶現況，選擇合適的節能模式，是一項相當重要的議題。由於台灣離島的發電成本高於台灣本島許多，因此從離島著手進行節能是一有效的途徑。隨著政府近年所推動將傳統水銀路燈汰換為LED路燈的計畫，本研究以綠島路燈節能為例，考量多項因素，分析傳統節能模式 (Conventional Contract)、節能效益分享型 (Shared Savings Contract) 與節能量保證型 (Guaranteed Savings Contract) 三種不同節能模式之回收年限 (Payback Period, PP) 與投資報酬率 (Return on Investment, ROI)，最後以台電公司與能源技術服務公司兩個不同角色，探討不同情境下各自能選擇的適當節能模式。

關鍵字

能源技術服務產業；節能模式；發光二極體；投資報酬率

並列摘要

Due to extensive usage of fossil fuels and soaring emissions of greenhouse gases, rising global temperature has aggravated the climate change and made nations worldwide focus on issues concerning environmental protection. Since skyrocketing energy prices began to cause a gradual increase in electricity generation costs in recent years, the government has also begun to proactively promote the energy conservation and carbon deduction policies without widespread access to green energies. In response to the energy crisis, the energy service companies (ESCOs) have been developed for the purpose of devising energy saving projects for both the government and energy users. However, it is a rather crucial issue of how to consider the current circumstances and choose the most desirable model from various energy saving models. As the cost of energy generation is much higher on the outlying islands of Taiwan than that on the main island of Taiwan, it would be an effective approach to launch the energy saving program on the outlying islands. With the government proactively promoting the project of replacing mercury-containing lamps with LED lamps in recent years, this thesis takes the example of energy-efficient street lighting system on Taiwan's Green Island. It considers multiple factors concerning three kinds of contracts frequently adopted by ESCOs, namely “conventional contract,” “shared savings contract” and “guaranteed savings contract,” and analyzes respectively their payback periods and returns on investment. Finally, from different perspectives of Taipower and the other energy service companies, desirable energy saving models under various circumstances are found.