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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 The review screened more than 500 published papers and unpublished reports containing 120 unique studies related to renewable energy, climate change and sustainable development.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]

As a solution to mitigate the effects of climate change, scientists have been looking for more environmentally friendly energy production alternatives, so, since the 2000s, renewable energy production has increased across Europe. Climate change has a negative impact on our planet, with increased emissions of greenhouse gases contributing to global warming. In this context, biogas has become a promising solution for reducing greenhouse gas emissions and improving environmental quality. The purpose of the study is to review the evolution of research and development in this field, identify trends and gaps in existing knowledge, and assess the impact and significance of published research. In this sense, a bibliometric analysis was carried out, based on the topics "renewable energy" and "biogas", in which VosViewer software was used to create maps. The research results show that existing policies worldwide encourage transfer and synergy between researchers from different countries, achieving important results. Practically, researches and examples of good practise show that biogas can be a viable solution to mitigate the effects of climate change, and in the coming decades, under the conditions of the population growth estimates materialization, we will most likely witness an intensification of agriculture to ensure the population's food needs. [ABSTRACT FROM AUTHOR]

Abstract Numerous studies have investigated how small vulnerable territories are adapting to climate change, particularly non-interconnected islands with focus on Renewable Energy Sources (RES) and self-sufficiency. A key to success is an energy plan with appropriate policy tools. This paper first presents a discussion on barriers to RES deployment. Then, we present the energy situation and the legislative energy framework in Reunion Island. Are the legislative and policy frameworks sufficient to achieve the energy transition? This paper proposes an original view discussing the potential of a territory and available tools to develop RES. Energy transition is also view as an opportunity. Highlights • Reunion Island's potential for achieve the energy transition. • A complex legal context: town planning and energy planning not in phase. • A set of barriers identified and analysed isolated island. [ABSTRACT FROM AUTHOR]

Global anthropogenic activities resulting in the emission of harmful greenhouse gases (GHGs) to the atmosphere have increased the challenges faced from climate change. The greater awareness of the need to mitigate climate variability has brought about intense focus on the adverse impacts of fossil-fuel based energy on the environment. Being the single largest source of carbon emissions, energy supply has attracted much attention and more so that, climate change impacts extend beyond national boundaries. Since energy use is sine qua non to economic development, scientists have reiterated the necessity of developing and utilising renewable energy. Although, past and present CO 2 emissions have and are majorly caused by industrialized countries, it is envisaged that future GHGs emissions would be mostly from developing countries as they industrialize. Renewable energy sources that include biomass, hydroelectric, wind, solar and hydrothermal systems, are carbon-neutral, releasing relatively no emissions. This paper discusses the initiatives associated with the provision of renewable energy to the energy mix in Nigeria as an indication of the country’s commitment to adopt a sustainable development strategy in shaping the economy. It reviews the literature and employs a discourse analysis to examine the limited use of renewable energy sources in Nigeria and the factors prevailing against their development. The paper concludes by identifying social and political obstacles as most significant roadblocks towards rapid implementation of a green economy through the deployment of renewable energy for sustainable development. [ABSTRACT FROM AUTHOR]

Global firms are increasingly adopting greenhouse gas mitigation targets in response to climate change. These targets serve as a spur for carbon mitigation initiatives, provide guidelines to select appropriate mitigation actions, and set the standards to measure the progress of the mitigation efforts. Despite their important functionalities, firm-level mitigation targets have rarely been studied. In this paper we aim to provide a comparative view on mitigation targets set by global firms across different countries and industrial sectors. The analysis focuses on four dimensions, i.e., adoption, metric, scope, and stringency. We find Japan far leads the other major countries in terms of target adoption, but the targets of Japanese firms are generally less stringent. Canadian firms are laggards in both target adoption and target stringency. The mitigation targets are also considerably uncommon among Australian firms. Firms in developing countries fall behind in target stringency and display a significantly greater divergence than developed countries in sectoral adoption rate. The European Union firms are most likely to cover the emissions in their supply chains in targets. Target stringency has substantially tightened from 2005 to 2012. For all the countries in this study, around 95% of the firm-level targets are more stringent than the Intended Nationally Determined Contributions submitted to the Paris Agreement. Setting mitigation target has a significant positive impact on both the likelihood of investing in renewable energy and the amount of investment in renewable energy. However, there is no evidence that more stringent targets lead to higher investment. These findings point to the most pressing issues with regard to corporate mitigation target-setting that policymakers and corporate management should address. [ABSTRACT FROM AUTHOR]

Climate change is the greatest challenge of our time for development. Adaptation to this change combined with the reduction of greenhouse gas emissions can help to boost the economic transformation which stimulates growth, fills the energy gap and reduces poverty. This paper focuses on the potential of renewable energy sources (RES) for electricity generation in Madagascar which is a lower-income country. A large accessibility to electricity could be a driving force for the economic development of this fourth worldwide Island. The Electricity mix is currently heavily dependent to fossil fuel imports. Indeed, most of the electric demands are fulfilled by diesel power plants. An overview of the power situation and renewable energy potential of Madagascar is first presented, then different scenarios for the evolution its electricity mix are proposed. [ABSTRACT FROM AUTHOR]

This paper examines the relationship between renewable energy production and greenhouse gas emissions (GHG) using U.S. state-level data for 2010. After controlling for other sources of emissions, U.S. states that produce a larger share of renewable energy are found to have lower GHG emissions. It is estimated that a 10% increase in the share of renewable energy could decrease CH 4 emissions by about 0.26%. Since the use of renewable energy sources does not release GHG emissions, this effect can be interpreted as stabilizing if renewable energy is added to coal use or as corrective if it replaces coal. After accounting for the role of coal as a baseload power source, an increase in the share of renewable energy is estimated to mitigate N 2 O emissions at the U.S. state level only if states individually decrease their share of coal use to levels below 41.47%. These findings have significant policy implications for the provision of guidance to policymakers in identifying optimal energy mixes and in pursuing realistic goals to enhance renewable energy penetration and to contribute to the current efforts of tackling climate change. [ABSTRACT FROM AUTHOR]

Abstract: Over the last two decades; technical, economic and environmental benefits of hydroelectric power make it an important contributor to the future world energy mix, particularly in the developing countries. Turkey has a total gross hydropower potential of 433GWh/yr, but only 125GWh/yr of the total hydroelectric potential of Turkey can be economically used. By the commissioning of new hydropower plants, which are under construction, 36% of the economically usable potential of the country would be tapped. Turkey''s total economically usable small hydropower potential is 3.75GWh/yr. It is expected that the demand for electric energy in Turkey will be about 580 billion kWh by the year 2020. Turkey is heavily dependent on expensive imported energy sources that place a big burden on the economy and air pollution is becoming a great environmental concern in the country. In this regard, renewable energy resources appear to be the one of the most efficient and effective solutions for clean and sustainable energy development in Turkey. Environmentally friendly energy development has enormous implications for developing countries as major emitters due to their rapid economic and population growth. With some possible options, the paper concludes that the reduction of emissions can only be achieved when policies are supportive and well targeted, standards and incentives are realistic and flexible, and the public is actively responsive to environmental degradation. Turkey''s high rate of energy-related carbon emissions growth is expected to accelerate, with emissions climbing from 57 million tons in 2000 to almost 210 million tons in 2020. Carbon intensity in Turkey is higher than the western developed nation average. In this regard, renewable energy resources appear to be one of the most efficient and effective solutions for clean and sustainable energy development in Turkey. This paper deals with Turkey''s renewables energy sources for sustainable environment. [Copyright &y& Elsevier]

Policies to assure combatting climate change and realising energy security have stimulated a rapid growth in global installed capacity of renewable energy generation. The expansion of power generation from renewables, though, has so far lagged behind the growth in generation capacity. This indicates missed and relatively cheap opportunities to reduce GHG emissions. This paper sheds light on the mismatch between installed capacity and power generation for the case of wind power. It analyses and compares wind power developments in the four countries that contributed most to the increase in wind power capacity during the last decade: namely, China, the United States, Germany and Spain. We estimate the dynamics of capacity utilisation of wind power installations and identify its drivers. Finally, we identify potential policies to reduce the gap between power capacity and generation, which will contribute to cost-effective reduction of GHG emissions. [ABSTRACT FROM AUTHOR]

Abstract: The goal of this paper is to estimate the perspectives of the Baltic States: Estonia, Latvia and Lithuania on meeting the new European Union climate commitments, i.e., to reduce greenhouse gas emissions by 20% to the year 2020 in comparison with 1990. This ambitious target could be reached based on other EU climate and energy package commitments: increase of the share of renewables and improvement of energy efficiency as tools for fulfilling the GHG emissions reduction target. The paper gives an overview on the current situation and future plans of the Baltic States in the field of energy efficiency, consumption of renewables and reduction of GHG emissions. [Copyright &y& Elsevier]

Under the UNFCCC, governments have adopted a universal climate change agreement, the Paris Agreement, near the end of 2015 covering nearly all countries from 2020, and will endeavor to find ways to scale up efforts before 2020 beyond the existing pledges to curb emissions, so that the world can stay below the agreed maximum 2 °C temperature rise. In view of long-term planning strategy, many countries have adopted the year 2050 goals, and science strongly indicates that any further delay in appropriate global mitigation efforts will increase the pressure towards our low-carbon future. This paper discussed the multiple challenges and searches for the optimal pathways in promoting the transformation of future renewable energy systems in Taiwan, especially its practical implementation aspects. While developing Taiwan׳s climate legislation and strategies, in addition to having the participation of both the public and private sectors in order to act aggressively to overcome policy obstacles, active dialogues with the stakeholders and the general public were also promoted which helped to improve public awareness and build up consensus. The end result is the promulgation of the 2015 Greenhouse Gas Reduction and Management Act which stipulates Taiwan׳s short and long term climate goals and development of corresponding measures, and the formulation of Taiwan׳s Nationally Determined Contribution which serves to foster a facilitative environment and create tremendous business opportunities for the booming green industry in Taiwan. [ABSTRACT FROM AUTHOR]

The scientific evidence of climate change as a result of greenhouse gas emissions which causes ozone layer depletion is becoming increasingly obvious and clear. Findings revealed that energy from the fossil fuel is the major source of greenhouse emission which destroys the environment and makes it unhealthy for living beings. In Nigeria, conventional energy (oil and gas) with gas flaring has the highest percentage of 52% and liquid fuel of 32% of carbon dioxide (CO2) respectively. This sector contributes revenue of over 70% to Nigeria s economy and generates an average total 21.8% of greenhouse gas emission. In Nigeria, there is a much more potential for share renewables with 15.4% of total energy production and 8.6 % of energy consumption. In reality with global environmental concern, Nigeria s carbon dioxide emissions have increased with energy production and consumption. The Integrated Renewable Energy Master Plan of 2008 projects a 26.7% renewable energy contribution to the Nigeria s energy use and this is expected to reduce CO2 and greenhouse gas emissions at 38% by2025. Nigeria has not been playing significant role by reducing emissions of greenhouse gases. This paper highlights Nigeria s climate change situation and penetration requirements for various renewable energy deployments as mitigating instrument for climate change towards healthy and productive environment. [ABSTRACT FROM AUTHOR]

Landfills all around the world are one of the major sources that contribute towards global warming and climate change. Although landfilling should be prioritized last in the waste management hierarchy due to highest greenhouse gas emissions as compared to other waste management systems it is still very common around the world. In this study, methane emissions are estimated by applying First Order Decay model to landfills in Pakistan over the latest data available by Pakistan Environmental Protection Agency. Results demonstrate that nearly 14.18 Gg of methane is emitted from the landfills in Pakistan each year. By combusting this methane in the form of biogas collected from the landfills as a waste management scheme we can reduce greenhouse effect up to ~88%. Same percentage is observed when we apply the similar analysis over the potentially improved practice. Also, Pakistan is facing severe economic crises due to continuous increasing gap between energy demand and supply. Demand is increasing exponentially while supply is observed to remain constant over the last few years due to frozen capacity in spite of having significant renewable/alternate energy resources. Current electricity shortfall has reached up to 6000 MW. Present operational landfills in Pakistan can only contribute up to ~0.1% to cater the total deficit which does not make any significant difference but if 75% of the total waste generated today is collected and 50% of it landfilled then Pakistan has the potential to produce ~83.17 MW of power that can contribute up to 1.4% to overcome the current power shortage. The outcomes of this paper may also be applicable to other developing countries having similar resources. [ABSTRACT FROM AUTHOR]

Abstract: In an effort to diversify economies and reduce high oil dependency, the Gulf Cooperation Council (GCC) countries plan to increase the use of renewable energy sources to meet the challenges of a post-oil future. The Accession to the United Nations Framework Convention on Climate Change (UNFCCC) and the Kyoto Protocol, which require a commitment to reduce greenhouse gas emissions, has started a process of environmental awakening in the GCC countries. This paper reviews the publications on renewable energy with reference to the GCC countries since 2005. The objective was to investigate the benefits of funding and investing in renewable energy projects in the GCC countries. The article shows that the GCC countries have begun to adopt a more pro-active approach toward renewable energy that will help progress the GCC countries towards sustainability. The reorientation of strategies and policies toward renewable energy is evolving in the GCC countries. [Copyright &y& Elsevier]

Abstract: Climate change concerns, increasing global energy demand, coupled with pending peak supply of fossil fuels, calls for development of new power source. The rapid price drops for solar technologies and combined with international and national policy changes makes solar energy more affordable and accessible for widespread adoption. Solar energy also contributes towards the reduction of greenhouse gas emissions. The combination of electrolysis of water and fuel cells, which use hydrogen as an energy carrier extends the utility of the solar energy. For an integrated solar powered hydrogen production, storage and utilisation system, one of the elements that needs to be designed carefully is the power management system. Power management strategy has a complex function in this type of solar hydrogen system. This paper presents a power management strategy based on fuzzy logic technology to address the problems. The target of this power management strategy is to use the solar power to meet the power demand, then utilise any addition power to maximise the hydrogen production, and minimise the usage of battery at the same time. Therefore, the overall system''s efficiency will be increased and lifetime of the battery pack will be extended. The numerical results based on real solar data for a one year period shown that the proposed fuzzy logic controller can direct the power flow wisely between different elements such as load, electrolyser, fuel cell and battery, it is capable of meeting the daily power demand of an office block and using the excess solar power to produce hydrogen as far as possible while maintaining the battery''s state of charge in a desired region in order to extend the lifespan of the battery. [Copyright &y& Elsevier]

Abstract: Climate change due to greenhouse gases emission from fossil fuels has prompted several governments to channel resources in the commercial utilisation of renewable energy sources. Solar energy is one of the renewable energy sources that is highly untapped and underutilized. Australia has the highest average solar radiation per square metre of any continent in the world. This paper will focus on the need to improve solar energy utilisation in Australia, challenges facing it and the future benefits. This study shows successfully storing and transferring solar energy will ensure that this energy source will make a significant contribution to Australia''s electricity grid supply in the future and Australia will be well positioned to assist in meeting its growing clean energy demand. [Copyright &y& Elsevier]

Abstract: Industrialization, development and social transformation has brought together issues of over exploitation of limited energy resource base (e.g. fossil fuel), accelerated threats of energy insecurity, and liberation of greenhouse gas emissions across the continents. The global challenge for the 21st century and way ahead is to find other means of satisfying energy needs, diversifying the energy supply, up-scaling the make-up of renewable energy to a greater extent, optimization of energy consumption and supply system. Denmark has been continuously moving towards optimization of energy production, usage and its overall management, during and even after the first global oil crisis. The country has been delivering its priority in the development of renewable energy and standing the country an energy self sufficient from last three decades. Country''s overall consumption of energy has decreased than that of the decades of 1980 and 1990s, with wider range of energy mix and saving options. The Danish government has strategized to make the country fossil fuel free by 2050, where special attention and interventions is required to boost up its development of renewable energy in the country. The past efforts of the Danish government in the energy development has helped not only making the country ‘energy self sufficient’, but also lowering the level of carbon dioxide in the atmosphere. Danish energy policy and strategies have been found more conducive and reflective of the joint EU priorities on the matter of dealing with climate change and energy security. All the past progress and its allied policies seem to be quite supportive in fulfilling its strategies for greener future. This review paper will discuss on the past efforts of Danish government in energy management and highlights on some political initiatives, which have been realised to support the country moving towards clean and green energy future. [Copyright &y& Elsevier]

An inventory of greenhouse gas emissions from various economic sectors in Lebanon was conducted following the guidelines set by the World Meteorological Organization and United Nations Environment Programme Intergovernmental Panel on Climate Change. The inventory indicated that the energy sector is the major contributor (74%) to greenhouse gas emissions. This paper describes the inventory of energy related GHG emissions and assesses mitigation options to reduce emissions from electricity generation with emphasis on the usage of renewable energy including biomass, hydropower, solar and wind resources. Policy options for overcoming barriers hindering the exploitation of renewable energy resources are discussed in the context of country-specific characteristics. [Copyright &y& Elsevier]