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Abstract: Renewable energy-based off-grid or decentralised electricity supply has traditionally considered a single technology-based limited level of supply to meet the basic needs, without considering reliable energy provision to rural consumers. The purpose of this paper is to propose the best hybrid technology combination for electricity generation from a mix of renewable energy resources to satisfy the electrical needs in a reliable manner of an off-grid remote village, Palari in the state of Chhattisgarh, India. Four renewable resources, namely, small-scale hydropower, solar photovoltaic systems, wind turbines and bio-diesel generators are considered. The paper estimates the residential, institutional, commercial, agricultural and small-scale industrial demand in the pre-HOMER analysis. Using HOMER, the paper identifies the optimal off-grid option and compares this with conventional grid extension. The solution obtained shows that a hybrid combination of renewable energy generators at an off-grid location can be a cost-effective alternative to grid extension and it is sustainable, techno-economically viable and environmentally sound. The paper also presents a post-HOMER analysis and discusses issues that are likely to affect/influence the realisation of the optimal solution. [Copyright &y& Elsevier]

Abstract: Due to the growing energy needs along with increasing concerns towards control of greenhouse gas emissions, most developing countries are under pressure to find alternative methods for energy conversion and policies to make these technologies economically viable. Most of the energy is produced from fossil fuel in India which is not a sustainable source of energy. In this paper Indian power sector has been examined by using MARKAL model for introduction of clean coal and advanced nuclear technologies with implementation of energy conservation potential. The result shows that application of clean technologies gives energy security but not significant reduction in carbon dioxide emissions. When clean technologies apply with energy conservation a huge amount of CO2 can be reduced and also economically viable. Three scenarios including base case scenario have been developed to estimate the resource allocations and CO2 mitigation. The clean technologies with maximum savings potential shows 70% CO2 reduction in the year 2045. [Copyright &y& Elsevier]

Urban transport plays an important role in city development and is also a leading sector in energy consumption and air pollutant emissions. To examine the effectiveness of policies in reducing transport influences on environment and energy use, this paper takes passenger transport system in Delhi as a case and develops a system dynamics model for scenario analysis from the base year 2006 to 2020. It is found that the implementation of certain policies will lead to a significant reduction of energy use and emissions of CO2, CH4, CO, NMVOC, and SO2 by 7–14, 7–15, 4–9, 12–23, 12–24, and 11–23%, respectively, in 2020. Bus, car, and two-wheeler need particular attentions to mitigate their environmental impacts while MRTS would be an effective solution to restrict the booming energy demand and associated air pollutant emissions. The implications for policy are that accelerating the development of railway network, together with decreasing the fuel intensity, slowing down road network extension, and imposing fuel taxes will be effective instruments to build an environmentally friendly urban transport system. [ABSTRACT FROM AUTHOR]