공공기관 신재생에너지설비 설치의무화 정책에 관한 연구

서지원 동국대학교 일반대학원 2026 국내박사

This study analyzes policies aimed at expanding the adoption of renewable energy to address global climate change and achieve greenhouse gas reduction targets. It evaluates the effectiveness of the mandatory renewable energy installation policy in public buildings. To achieve this, prior research was reviewed, and surveys and in-depth interviews were conducted to assess the implementation status of the policy. The findings indicate that the mandatory installation policy has contributed to the expansion of renewable energy adoption, but several limitations remain. First, there is a bias toward specific energy sources(such as solar and geothermal energy). Second, the high initial investment costs limit expansion into the private sector. Third, the lack of operational and management capacity within public institutions has led to reduced policy effectiveness. To enhance the effectiveness of renewable energy deployment, this study proposes several improvements. First, policies should consider both technological advancements and economic feasibility when promoting renewable energy facilities. Second, expertise among public institution personnel should be strengthened, and cooperation with local governments should be established to enhance policy implementation. Third, the mandatory adoption of the Renewable Energy Monitoring System (REMS) should be enforced to maximize maintenance and management efficiency. Finally, to strengthen the competitiveness of the domestic renewable energy industry, policies should support an increase in the utilization of locally produced equipment. This study provides practical recommendations to improve the effectiveness of renewable energy policies in the public sector. Future research should focus on quantitatively analyzing the environmental benefits of renewable energy and its impact on greenhouse gas reduction.

태양광 모듈 효율 향상을 반영한 신재생에너지 보급정책 연구

노상양 동국대학교 2017 국내석사

Thanks to the steady implementation of domestic renewable energy policy, the deployment rate of new and renewable energy has been improved, and the employment and sales in related industries have also been rised. Currently, government gives equal weight to the electric power production, if the electric power system meet the minimum efficiency standards. This policy does not motivate suppliers to use high efficiency facilities. Therefore, this study suggests the method of improving renewable energy deployment policy such as ‘Incentive differentiation plan with efficiency level’, which will lead to technical development and an increase in deployment, by analyzing the efficiency level of solar PV modules that have been rapidly increasing in capacity and efficiency. The efficiency levels of 1,437 crystalline solar photovoltaic modules certified by Korea Energy Agency until 2016 were analyzed, and the average efficiency was found as 15.25% in 2012, 15.88% in 2014 and 16.33% in 2016. The result shows that the efficiency of certified products was improved by approximately 1.7% every year. Due to the absence of research data on photovoltaic modules installed in domestic solar power plant, the efficiency levels of the actually installed solar module through deployment program were analyzed. The solar modules were installed at 60,018 sites participating in home subsidy program, building subsidy program and RPS program. The capacity and efficiency data have been collected via authorized institutions, and were analyzed statistically to understand the performance characteristics. It was found that the proportion of high efficiency PV modules are increasing in the market. The recruitment rates of high efficiency PV module are roughly determined according to participants interest, information acquisition and profitability review. Presently, subsidies for solar modules are limited with less than 14% efficiency. However, in order to strengthen the efficiency of the subsidy program, minimum efficiency standards should be raised to 15% of efficiency level. Also, the introduction of the pre-announcement on Minimum Efficiency Standard, which notice that minimum efficiency standards will increase step by step, is suggested. In addition, ‘NRE deployment efficiency grade’ that provides differentiated incentives to domestic PV subsidy by rating efficiency in 3 different stages based on the efficiency of the PV facilities is recommended. The suggested subsidies are graded as follows: upper grade with 17% above, intermediate grade from 15.5% to less than 17% and lower grade with less than 15.5%. It is necessary to introduce improvements such as the differential support of various subsidy program, differential weighting in RPS program, the preferential method in the procurement market based on these grades. However, flexible factors such as future minimum efficiency standards, policy considerations and trade environment should be considered in order to develop and apply flexible and systematic regulation. Another option is the Top Runner program, which is a way to set efficiency targets based on products with the highest efficiency among the same types of products sold in the market. By establishing and achieving the best standard target through this option, it is expected to induce technical development and industrial promotion. In the long term view, it is necessary to spread the awareness that differentiated incentives are provided according to the efficiency level by implementing ‘Energy Labeling Programs’ and ‘Efficiency Grade Certification Program’. It is as yet difficult to present the quantitative result when the proposed improvement measures are best implemented. However, the measures are expected to improve the high efficiency of the crystalline solar PV module and the awareness about the high efficiency product. As a result they will lead an increase in the performance of various government subsidy programs and strengthen industrial promotion. Finally, it is necessary to prepare the measurement for the amplified use of domestic product. Considering the low market share of domestic products and the high dependence on cell imports (55.2%). In the future, a comprehensive deployment efficiency standard need to be implemented. based on the total system efficiency of the PV power generation installed in the field.

신재생에너지설비 KS인증 요구사항이 기업성과에 미치는 영향

한윤철 동국대학교 2018 국내박사

New and renewable energy is recognized as one of the ways to resolve the depletion of fossil energy and environmental problems caused by the use of fossil energy. In Korea, due to the diversification of energy sources and the improvement of energy consumption structure, the related law was enacted in 1987 to promote the development of technologies and dissemination in the renewable energy sector. As part of measures to ensure a quality of new and renewable energy equipment, Korea has been implementing the new and renewable energy equipment certification system since 2002. It has been integrated into the KS (Korean industrial standards) certification system on July 29, 2015. The purpose of this study was to verify whether the requirements complying to acquire the KS certification of renewable energy equipment have an effect on the performance of firms. This study scrutinized whether the seven KS certification requirements have influenced on performance of firms categorized in three sections : the quality improvement, financial performance and customer satisfaction. Also this study examined whether there is a mediating effect on a corporate culture and process improvement and whether a new acquisition of KS certification have a moderating effect. This study analysed the theoretical and preceding research on the definition and kinds of certification, status and requirements of KS certification, corporate culture, process improvement and firm performance as the literature research. Base on the analysis output of the theoretical and preceding research, the research models and hypotheses were set up, the questionnaire for hypothesis verification was developed and then the survey was conducted and analysed. According to this study, with the quality management, product management and product testing among the seven requirements of KS certification, a positive effect on product has been observed. Among the requirements of KS certification, product testing contributed to improving a customer satisfaction, but all of the requirements didn’t make it relevant to financial performance. The corporate culture had a partial mediating effect on the quality management, product management and product testing, which are the KS certification requirements leading a significant on the quality improvement. In addition, the process improvement brought a partial mediating effect on the quality management and product management, and has a full mediating effect on a product testing. KS certification requirements did not influence significantly on financial performance. However, as a result of analyzing the moderating effect by the new acquisition of KS certification, if the five requirements, including the material management, process manufacturing facility management, product management, customer environment resource management, and product testing are obeyed, it will enhance a significant impact on financial performance such as a sale growth and net profit. The implications of this study are that it is possible to obtain the effect of the quality improvement and customer satisfaction by converting from the new and renewable energy equipment certification system to the KS certification system. In addition, to consider conducting a product testing is required at the time of periodical review as it confirms the importance of product testing which has a common effect on quality improvement and customer satisfaction. The effectiveness of the preferential benefit policy of the certification of new and renewable energy equipment was confirmed, and it was figured out that the new and renewable energy equipment certification is highly similar with the KS certification. In addition, since most of companies certified with KS in the new and renewable energy equipment have the ISO quality management system certification, the system should be improved to reduce a burden of corporation in maintaining a certification.

국내 BIPV 시장 촉진을 위한 BIPV 정의 개정방안에 관한 연구

박승준 동국대학교 일반대학원 2022 국내박사

The domestic BIPV(Building Integrated PhotoVolatic) market is expected to revitalize the domestic BIPV market centering on the introduction of the 'Zero Energy Building Certification Mandatory System' (2020~) after the initial ('90~) pilot introduction and dissemination and the slump in the construction economy. However, the definition of the current domestic BIPV construction standards (government notice) has become rigid and somewhat stagnant. In addition, the domestic BIPV definition is limited to buildings, walls, windows, and roofing materials when solar modules are installed in buildings. This limited definition does not meet new technologies such as the development, launch and application of various BIPV application products due to the increase in BIPV installation around buildings and auxiliary facilities which are like roads and sound barriers, heterogeneous reinforcement such as iron and plastic, and convergence building materials. In addition to previous studies on domestic and overseas BIPV market trends, institutional changes, R&D, manufacturing, and construction, a Delphi study was conducted with the case of studies on BIPV, including similar BIPV, and related experts. We intend to contribute to vitalization of the BIPV market by preparing a final revision that can be accepted in the field. In the introductory part of this “Zero Energy Building Activates BIPV Application Plan”, current solar power generation technology trends related to BIPV facilities, theoretical considerations of construction subsidiary materials, etc., domestic and foreign market trends, causes of market stagnation, and methods of promotion are explained. The research method was developed focusing on practical and field cases in industry and research circles. Among the research methods, some policy proposals were selected from the results of previous research on 'BIPV application plan related to the activation of zero-energy buildings', and some policy proposals were selected to 'identify the composition and function details related to the definition of BIPV'. The expert Delphi survey adopted as this research method was conducted in stages by dividing the 1st stage into 3 times and the 2nd stage into once. Especially, When it comes to citing previous research results, BIPV definition policy measures include product, design, consruction and system, etc. There are proposed across 4 fields. While policy proposals were being discovered, this expert Delphi survey was limited to the definition of BIPV. Experts are expecting market revitalization through market differentiation such as 'introduction of semi-BIPV'. Although it can contribute to vitalization of the BIPV market through the Delphi 1st and 2nd stage research process, many industry experts do not adopt the 'semi-BIPV introduction method' and the research community prioritizes stability and stability. You expressed negative and conflicting opinions. However, the 'separation alternative' related to the introduction of semi-BIPV and the 'clarification of the definition of BAPV(Building Attatched PhotoVolatic)', which is a request for additional feedback, were adopted. Among the three new alternatives citing some contents such as 'French BIPV roofing material definition', a compromise between 'partial citation of envelope function' and 'part of domestic BIPV definition' of the IEC BIPV international standard was adopted. Meanwhile, in the field case study, the 'compulsory solar power generation quota system' market, 'zero energy certified buildings', and 'buildings such as soundproof walls and bridges' were mainly targeted for 'buildings subject to mandatory installation of public institutions'. Where many BIPV facilities are installed. After reflecting in the “Expert Delphi Survey” process, we include similar BIPV installations applied to other fields, such as collecting opinions and verifying theories. By comparing the 'measures other than the need for heat dissipation' collected during on-site investigations such as 'IEC BIPV international standard partial citation and domestic BIPV compromise', 'BAPV revision alternative', and 'other alternatives to separation', these differences can be supplemented and accepted in the field. A 'final revision plan' was derived. In order to revitalize and revitalize the current BIPV domestic market in relation to the derivation of the final amendment, first, BIPV facilities are differentiated from general photovoltaic facilities, and in particular, from the perspective of fostering convergence industries such as construction materials, power generation materials and design design. In addition, to diversify the BIPV market, expand the standardization of certified products, support the expansion of basic infrastructure such as BIM (building design information) manpower training, and expand the base such as the domestic BIPV classification and system introduction, the advanced case design element rating system, REC (compulsory power generation quota) weight, zero Continuous research support is needed for follow-up tasks, such as building energy certification and enhancing self-reliance factors. 국내 BIPV 시장은 주로 공공(의무화)시장에서 초기(‘90~)시범 도입.보급 후, 건설 경기 등 불황기를 거쳐 최근, “제로에너지 건축물 인증 의무화 제도” 도입(2020~)으로 시장 활성화가 기대된다. 그러나, 국내 BIPV 시공 기준(정부 고시·공고)내 정의 내용의 경직성과 아울러 공공 분야 설치의무화 시장 집중 등으로 인해 다소 편중된 상태에 있는 실정이다. 국내 BIPV 정의 내용이 태양광 모듈을 건축물에 설치함에 있어 건축물과 벽, 창호, 지붕재 등으로 한정하고 있다. 이러한 한정된 정의 내용이 도로, 방음벽 등 건축물 주변 및 부대 시설의 BIPV 설치 증가와 아울러, 철강, 플라스틱 등 융.복합 건축 자재 신기술 제조로 인한 다양한 BIPV 응용제품 개발, 출시 적용 등 최근 추세에 부응하지 못하고 있다. 본 연구는 국내·외 BIPV 시장 동향, 제도 변천, R&D.제조.시공 등 관련 계층별 시장 부진 요인 조사 등 선행 연구 조사와 더불어 유사BIPV를 포함한 BIPV 현장 사례조사와 관련 전문가 델파이 설문 조사를 거쳐 개정 대안을 마련하고, 현장에서 수용 가능한 최종 개정 방안을 도출하여 BIPV 시장 촉진화에 기여를 목적으로 수행하였다. 본 연구 도입 부분에서는 BIPV 설비와 관련된 현행 PV 기술 동향, BIPV 정의 등 이론 고찰과 아울러 국내.외 시장 동향, 시장 부진 원인 및 촉진 예상 환경 등에 대해 설명하였다. 이러한 시장 동향, 시장 부진 원인 등을 잘 인식하고 있는 산업계 및 연구계 등 실무 종사자와 현장 사례를 중심으로 연구 방법을 전개하였다. 연구 방법 중, “제로에너지건축물 활성화 BIPV 적용 방안” 등 선행 연구조사를 인용한 결과 중, “BIPV 정의 내용 명확화 등” 일부 정책 제안들을 발췌 선별하였다. 아울러, 이와 병행하여 실시한 “현장 사례조사” 과정에서 얻어진 결과물인 “준BIPV 도입, 이격 대안 등” 논거 항목들을 중심으로 다음 단계인 “전문가 델파이 설문 조사” 항목에 반영하였다. 현장 사례 조사에서는 BIPV 설비가 다수 설치된 “설치의무화 대상 공공기관 건물” 들을 주된 대상으로 하여 “RPS(신.재생에너지 공급 의무)시설물”, “제로에너지 인증 건축물” 및 “방음벽, 교량 외 기타 공작물” 등 다른 분야에 적용된 유사 BIPV 설치 건축물을 포함하였다. 금번 사례 조사를 통해 BIPV 제품 및 시공 경향, BIPV 시공기준 세부 규정과의 불일치 사항들을 분석하였고, 아울러, “준BIPV 도입 필요성 외 이격 대안” 등 논거 사항들을 도출하였다. 본 연구 방법으로 채택한 전문가 델파이 조사는 1단계 3회 및 2단계 1회로 구분하여 단계적으로 시행하였다. 특히, 선행 연구 조사결과 인용에 있어서 BIPV 정의 정책 방안이 제품, 설계, 시공 및 제도 등 4가지 분야에 걸쳐 폭 넓게 제안한 반면에 금번 전문가 델파이 조사는 BIPV 정의 정책 방안 중, 제도에 국한하여 실시하였다. 전문가 델파이 1단계 및 2단계 조사 과정을 통해 BIPV 시장에 기여할 수 있는 “준BIPV 도입 규정화, 리모델링 등”, 여러 대안들을 제시하여 현행 기설치 또는 진행 중인 BIPV 설비의 개.보수, 개조 등 시장 활성화를 기대하였다. 하지만, 산업계 및 연구계 등 다수의 전문가들은 현 BIPV 기술의 신뢰성과 안정적이고 인증받은 BIPV 제품의 유통, 설치 시공 등으로 건전한 시장 촉진을 기대하는 관점들이 우세하였다. 급격한 리모델링 도입 방안 등에 대해서는 부정적이며 상반된 대립 의견을 표출하여 “준BIPV 도입 규정화, 리모델링 도입 방안”은 채택되지 못하였다. 다만, “준BIPV 도입 방안”과 관련된 “이격 대안 방안”과 추가 피드백 요청 사항인 “BAPV 정의 명확화” 대안은 채택되었다. 미채택된 방안 중, “준BIPV 도입 규정화” 대안으로 추가 조사를 실시하여 “IEC BIPV 국제표준 정의” 와 “프랑스 BIPV 지붕재 정의” 등 일부 내용을 인용 혼합한 3가지 신규 대안을 제시하였고, 그 중, IEC BIPV 국제표준의 “외피 기능 일부 인용”과 “국내 BIPV 정의 일부”을 절충한 방안이 채택되었다. 금번 델파이 전문가 조사 결과로 얻어진 “IEC BIPV 국제표준 일부 인용 및 국내 BIPV 절충안”, “BAPV 개정 대안” 및 “이격 외 다른 대안” 등을 중심으로 현장 사례 조사 과정에서 수렴된 “열방출 대책 방안” 등과 상호 비교하였다. 또한, 현장에서 수용 가능하도록 이러한 개정 대안들을 보완 분석하여 “최종 개정 방안”을 도출하였다. 최종 개정 방안 도출과 관련하여 현 BIPV 국내 시장을 촉진하고 활성화를 위해서는 우선적으로 BIPV 설비를 일반 PV 설비와 다른 차별화된 관점, 특히, 건축 자재, 전기발전 자재, 디자인 설계 등 융.복합 산업육성 관점으로 인식을 전환해야 하고, 더불어 현 에너지시장 운용 관점에서 건축 시장 수용성 관점으로 발상의 전환이 요구된다. 또한, BIPV 시장의 다변화 등 저변 확대 차원에서 건축법 내 건축 자재(복합 자재)분류 포함 등 수용성 제고, BIPV 시험.연구 등 표준화 확대, BIM(건물디자인설계정보) 전문 인력 양성 등 기초 인프라 확충 지원이 긴요하다. 한편, 선진 해외사례와 같은 BIPV 유형 분류.체계, BIPV 디자인 가이드 라인, 국내 REC(신재생에너지공급의무 MWh 거래 단위)가중치 신설 및 제로에너지 인증 건축물 자립률 요인 제고 등 후속 과제에 대한 지속적인 연구 지원도 필요하다.

울산 삼호 신재생 에너지 테마형 마을 사업 사례 연구

김관덕 동국대학교 2018 국내석사

울산 삼호 신재생에너지 테마형 마을사업은 국내 최대의 주택 태양광시설의 집적단지로서 그 규모가 3kW 500가구에 이른다. 국내 최초로 NB-IoT(협대역 사물인터넷)을 활용한 태양광모니터링시스템이 적용되고 태양광에서 발생된 전기생산량을 국내 배출권거래제외부사업과 연계하였다. 또한 Home-IoT사업이 시범적으로 적용된 사례이다. 신재생에너지와 배출권거래제외부사업과 융복합되어 추진된 사례이다. 태양광시설의 발전효과와 배출권거래제외부사업의 기대효과 등을 분석하여 국내 태양광보급사업 전체에 적용될 경우의 경제적 효과와 정책적 효과 등을 분석하였다. 향후 국내 태양광보급사업의 모델이 될 것으로 기대된다. Ulsan Samho new and renewable energy thematic village is important in many ways. It is the largest and first new and renewable energy thematic village model in Korea. The PV system was established in each one of 500 houses. In addition, NB-IoT(narrow band-internet of things) PV monitoring systems are installed with Home-IoT systems. The purpose of this study is to evaluate the economic effects of Ulsan Samho new and renewable energy thematic village. This study gives an estimated amount of electricity savings that can be obtained from the installation of the PV system, together with an estimate of CO2 savings. By using the same method to get the estimates, the economic effects of whole PV systems in Korea are evaluated. It implies that the wide spread of new and renewable energy thematic village projects such as Ulsan Samho can result in significant reductions in government budgets and an effective response to climate change.

지열이용검토서를 통한 지중 열교환기 설계인자 분석

김창구 동국대학교 2014 국내석사

1) 지열시스템의 시공 절차는 지열 전문기업이 공공기관 신재생에너지 설비 설치의무화사업에 참여할 경우 GLD Program으로 지중 열교환기 및 히트펌프용량을 설계한 지열이용검토서를 작성하여 에너지관리공단 부설 신재생에너지센터에 제출하고 평가와 승인절차를 거치도록 되어 있다. 2) 지난 3년간(‘10~’12) 승인된 전국규모의 지열이용검토서 실적자료를 대상으로 주요 설계인자를 분석하여 지열이용검토 기준의 보완사항을 제안하고자 한다. □ Purpose and Method of Research 1) The construction procedure of geothermal system according to public institutions renewable energy obligation project is as follows: At first, GLD program analysis is required for the perforated business site. The analysis provides applicable design information on ground heat exchanger and heat-pump capacity. Then, ‘geothermal utilization report’ is prepared based on informations from the analysis. Finally, the submitted report will be evaluated and approved by New & Renewable Energy Center (NREC). 2) Unlike construction of the other renewable energy facility, ‘geothermal utilization report’ is submitted and reviewed by NREC before its installation to prevent from faulty construction which occurred over past years. 3) ‘Geothermal utilization report’ is established to standardize geothermal system technology and to promote geothermal system. However, since the introduction of geothermal utilization review standard in 2009, only a few corresponding measures were made. Therefore, the present study suggests several improvement items based on analyzing geothermal utilization reports that have been submitted so far to revise and enhance the geothermal utilization review standard. 4) The present study analyzes key design factors based on performance data of 500 geothermal utilization reports approved by the NREC over the past three year ('10-'12), and is the first attempt in Korea. Several studies on geothermal systems were conducted previously based on design factors such as hourly and seasonal thermal conductivity, heat-pump performance, heat exchanger length and etc. of the single building. However, study of analyzing geothermal design system in nation-wide scale is desired. 5) The discussions of the present study will contribute for the experts of geothermal installation company to reduce cost through improved design and prevention of faulty construction by adjusting reviewing criteria of geothermal design summary and also by suggesting appropriate design parameters. □ Conclusion By analyzing and evaluating ‘geothermal utilization report,’ current design pattern is investigated and improvement of plan is suggested as follow: 1) Geothermal heat-pump COP - System COP compared to heat-pump COP has average of 90% which is higher than the minimum guid line value of 87%. - Recently, there has been increases of cooling and heating of geothermal heat-pump COP guide line by 5.1% and 4.9% respectively by new and renewable energy facility detailed evaluation. But, increase in minimum value of the entire geothermal system COP has not been enforced, which is suggested by the present study. 2) The total length of the bore hole of ground heat exchanger - The total length of bore hole of ground heat exchanger per RT turns out to have average of 67.3 m/RT, and the result of regression analysis with model equation Y=62.656X+941.39 showed R2 value of 0.93, meaning high credibility. - Adding review of the average length of ground heat exchanger per RT in geothermal utilization report is needed. 3) Ground thermal conductivity - National average of ground thermal conductivity is 2.51 W / m · k. - It is appropriate to design vertical closed loop with capacity of 175 kW or less with the above average value. 4) The initial temperature of the ground - The length of the ground heat exchanger per RT increases 3∼5 % due to 1°C increase of soil temperature. The accurate measurement of soil temperature is strongly recommended. New measurement method need to be included in the future geothermal utilization review. 5) Heat source EWT(Entering Water Temperature) - By optimization of heat source EWT, the construction costs (and also the design value of soil heat exchanger length) can be reduced by 13.7% despite the increase of 18.8% operation cost. Therefore, it is reasonable to increase the flexibility of heat source EWT in the future geothermal utilization review.

건물에너지관리시스템을 이용한 효율적 공공기관 에너지절약정책에 관한 연구

안진한 동국대학교 2020 국내박사

Set-point control of heating and cooling of the public spaces in Korea is very strict. For example, 18°C for the heating season and 28°C for cooling season. These setting points are over the limits of ASHRAE comfort zone and resulted in an uncomfortable working environment. Also, it should not be overlooked that this uncomfortable working environment resulted in low performance of employees therein. In this study, an investigation has been performed whether ECMs(Energy Conservation Measures) implementation of BEMS could be the better option than the strict set-point control for energy savings. e-QUEST(DOE-2 Engine) simulation results with the local weather data, Seoul, show that with common and easily implementable ECMs saves more energy with the comfortable environment than the strict set-point control. Also, the simulation results show that ECM such as Enthalpy controlled Air-sided Economizer and Outdoor Temperature Resets with VSD in Heating and Cooling systems save more energy than the strict set-point controls. This simple ECMs implementation saves about 15% more than that of the minimum set-point setting for heating and cooling season. Therefore, a proper ECMs operation in the public buildings is better than the strict set-point control for working environment and energy savings. Moreover, the economic benefits of the increased productivity of employees in a comfortable working environment are far greater than simple energy savings. Also, more investigation is exerted on the current operating conditions of BEMS in public buildings to identify improving chances of effective BEMS operation.

에너지이용합리화자금 성과분석을 통한 정책방안 제언 연구

노병욱 동국대학교 일반대학원 2024 국내박사

지표 상향을 통한 에너지 소비 효율 등급 기준 개선에 관한 연구

박성우 동국대학교 일반대학원 2024 국내박사

공공건물의 ESS 운영 사례 분석을 통한 성능 개선 방안 연구

한원희 동국대학교 2017 국내석사

ESS(Energy Storage System) is a set of equipments and operation methods, that stores excessive low cost electricity produced when the demand is low and supplies back when the demand is high. ESS has also become promising technology to improve the efficiency and quality of grid power, as the power generation capacity expands, customer side demand management is strengthened, and New and Renewable Energy portion increases. Currently, economic benefit of ESS has not been secured due to the large initial capital cost, which delays the formation of ESS market and restricts the dissemination of ESS system. Therefore, the propagation of ESS system is not yet active In Korea. The research effort analysing actual operation results are absent in Korea mainly due to the difficulties in collecting the data. The present study performed the investigation on reliable ESS operation data from seven public institutions collected through Korea Energy Agency. This study carried out the examination of the charging/ discharging parameters and the case analyses of actual operation data in order to improve the efficiency of ESS from the viewpoint of maximizing the economic profit of the consumer. Electric power load patterns and characteristics of public buildings were examined, and finally cost reduction in electricity bills were verified by applying the improvement strategy of charging and discharging algorithm and schedule operation. Also, the sensitivity tests were performed to understand the influences of increase in the difference of electricity charges for different Time-of-Use on the savings in electricity bills with and without ESS. From the results of the research based on the data of actual ESS operation cases in 2015, it was confirmed that the operation of ESS facilities in public institutions is still lack of effectiveness and stability even one year after installation. It was recognized that the improvement in ESS charging and discharging operation is necessary for all tested public institutions. The cost reduction effect is expected to be about 19.5 % if the proper improvement methods are applied. In order to maximize the electricity saving effects with ESS operation, ESS operation improvement should be made considering saving effects from both basic and per amount charges. The exclusive discount system for ESS has contributed to the reduction of demander’s electricity cost owing to the discount benefit for ESS charging and discharging. However, its economic impact is insignificant for the current supply market. The demanders who considers the purchase of ESS can not easily recover the large initial investment cost and make the ESS operating profit. Therefore, it was confirmed that it would be appropriate to continue the exceptional support system of the ESS discount plan not only until 2019, but further until the year of 2026. We also confirmed that electricity charge rate system, with relatively larger differences between on-peak and off-peak time rates, is preferred to achieve the mid-term and long-term goals of government policy, which intends to improve the conditions for realizing the economic benefits of urgent demanders, and to promote the formation of the private ESS supply market.