隨著環保意識興起，世界各國紛紛進行能源轉型，推廣使用再生能源代替傳統能源，以減少溫室氣體排放並增加本土能源供給。我國的目標是在2025年時達到再生能源發電占發電總量20％。與傳統能源相比，再生能源（例如：太陽能和風能）發電通常不穩定且具間歇性，太陽輻照度和風速可在數小時或數天內劇烈變化，而儲能系統應用功能多，其中之一是能處理再生能源發電間歇性問題，有效穩定電力供應。
本研究參考國內外儲能系統和技術經濟分析相關文獻資料，開發儲能技術經濟分析系統。研究中使用Access 2016建立儲能系統資料庫，應用Excel 2016建立技術經濟分析模組和使用者介面，並利用VBA (Visual Basic for Applications)連接資料庫、技術經濟分析模組和使用者介面，將資料庫進行儲能系統技術經濟分析，並運用蒙地卡羅模擬法(Monte Carlo Simulation method)使技術經濟分析結果更加精確。
研究結果顯示折現率大小影響儲能系統之均化成本值但不影響排序，儲能系統均化成本由低至高依序為鈉離子電池(鈉氯化鎳)、鈉離子電池(鈉硫)、鋰離子電池(NCA)、鋰離子電池(NMC/LMO)、鋰離子電池(LFP)、液流電池(釩)、鋰離子電池(LTO)、液流電池(鋅溴)及飛輪；儲能系統之效益包含發電系統應用、電力輔助服務和社會效益…等，本研究嘗試估算本土化之儲能系統效益，但依目前條件僅「電價套利」、「不斷電系統」與「碳減排效益」為符合國情之收益估算方式，本研究依據上述效益設定三種情境進行技術經濟分析，分析結果顯示依目前估算效益之方式而言，建置儲能系統尚不具經濟效益，若能降低儲能系統之年變動成本並提高使用年限方能還本。

In response to the rising of environmental awareness, countries around the world have been making energy transformations, such as promoting renewable energy to reduce greenhouse gas emissions and to increase local energy supply. Taiwan government set the policy goal of reaching 20 % of renewable energy generation in total power generation by 2025. Renewable energies (e.g. solar and wind) are unstable and intermittent. Solar irradiance and wind speed could change drastically in hours or days and thus influence the rate of power generation. One of the application of energy storage system (ESS) is to eliminate the intermittence of renewable energy and to stabilize the power supply.
This study established a techno-economic analysis module for energy storage system. Access 2016 was used to build the energy storage system database, and Excel 2016 was utilized to create the technical and economic analysis module and user interface. Visual Basic for Applications (VBA) was applied to connect the database, technical and economic analysis module and user interface. Monte Carlo Simulation method will be introduced so as to enhance the accuracy of the techno-economic analysis.
The results show that the discount rate affects the value of levilized cost but does not affect the sequence. The levelized cost of energy storage system from low to high are sodium-ion battery(NaNiCl2), sodium-ion battery (NaS), lithium-ion battery (NCA), lithium-ion battery (NMC/LMO), lithium-ion battery (LFP), flow battery (V), lithium-ion battery (LTO), flow battery (ZnBr) and flywheel. The benefit of storage including bulk energy services, ancillary services, social benefit…etc. This study tries to estimate the benefit of energy storage system in Taiwan, including arbitrage, uninterruptable power system and carbon emissions. This study set three scenarios to execute techno-economic analysis. The cost-benefit for building the energy storage system is significantly affected by the methods applied when quantifying the benefit, the discount rate, and service life.

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