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The use of renewable energy sources is one of the measures that have had a significant contribution in reducing greenhouse gas emissions while ensuring sustainable development. Hence, this necessitates the need to ensure a sustainable national socio-economic development pathway that supports low emissions through the development and use of renewable energy. This paper analyses data from a systematic review that was conducted to understand how research is approaching the state of public policies of renewable energy and climate change in Tanzania. The review screened more than 500 published papers and unpublished reports containing 120 unique studies related to renewable energy, climate change and sustainable development. Results indicate that renewable energy sources have the potential of contributing to the reduction of about two-thirds of the total global energy carbon dioxide emission. The results further indicate that renewable energy may save carbon dioxide for the range of global cumulative savings of about 220-560 GtCO2 in the period 2010-2050. The results also show that Tanzania has targeted to reduce greenhouse gas emissions by between 30% and 35% by 2030. Thus, more appropriate renewable energy policies would enable the country to further efficiently contribute to the global goal of reducing greenhouse gas emissions, while achieving its sustainable development. This underscores the need for Tanzania to adopt appropriate policies for the utilisation of renewable energy sources such as solar, wind, hydro and geothermal energy for the reduction of greenhouse gas emissions, while achieving its sustainable development goals. [ABSTRACT FROM AUTHOR]

The aim of this paper is to analyze the factors determining the choice of energy policy setting in favor of renewable energy sources. We investigate if such determinants are different between countries at different stage of development. Finally, we study if the adoption of green energy policies is characterized by complementary or substitution effects. Our analysis aims at responding at two research questions: what are the factors influencing a country's choice for a specific type of energy policy? Is it possible to identify either complementary or substitute policy interventions based on a country's level of economic development? Moreover, are developing systematically different from developed countries in manage public and private resources for renewable energies? The empirical analysis employs a panel probit model estimated over a sample of 56 countries observed between 2004 and 2011. The results show that while context variables have the same impact in developed and developing countries, public operational variables play a different role. Governments in richer countries are bound to play only a role of an arbiter. On the contrary, governments of developing countries are more directly involved in the management of energy policies. Hence, a greater impact is recognized to policies with direct involvement of the government. [ABSTRACT FROM AUTHOR]

The mitigation of global energy demands and climate change are the most important factors in the modern days. Development and application of solar energy have been regarded by the government of India and common people, and they thought that solar photo voltaic energy can provide more energy in future compare to other renewable energies. In the last decade, solar photovoltaic energy research and development has supported by the central government and state governments. This paper discusses the progress of current solar photovoltaic energy in India. It highlights the renewable energy trend in India with major achievements, state wise analysis of solar parks and industrial applications. Finally, it discusses the Indian government policies and initiatives to promote solar energy in India. This review on solar photovoltaic energy will help decision makers and various stakeholders to understand the current status, barriers and challenges for better planning and management in this field. [ABSTRACT FROM AUTHOR]