Achieving energy efficiency in buildings is an important factor in developed and as well in developing countries in order to meet its energy demand. Over the past few years, a number of reports have been emerged stating that the buildings sectors are responsible for approximately 31% of global final energy demand. Buildings account for 35% of total final energy consumption in India and building energy consumption is growing about 8% per years. Final energy demand in Indian building sector will grow up-to five times by the end of this century, driven by rapid income and population growth. Hospitals are institutions for the care of people with health problems and are usually functional 24hrs a day, all year around, which demands a lot of energy. Health sector is one of the largest and fastest growing sectors in India. By 2020, it is expected to become a $ 280 billion industry. In India hospitals contribute 23% of total energy consumption and the hospital building growth rate 12–15% in last decade. The World Health Organization estimated that India need 80,000 additional hospital beds every year to meet the demands of India’s population. The aim of this study is to assess the energy demand, energy savings & reduced greenhouse gas emissions by increasing the energy efficiency using advanced retrofitting. Bottom-Up Energy Analysis System (BUENAS) is an end use energy demand projection model for Hospital buildings in India, to normalize the assessment of energy-saving models also going to fill the gap in energy demand reduction by energy system modeling and decomposition analysis. Energy efficiency retrofitting of existing buildings plays a major role in developing country like India in order improve its energy security and minimizing the greenhouse gases. The positive effects of retrofitting of energy efficiency and need the policies and target base proposal for government intention to achieve the potential for energy efficiency are discussed.

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