A tes

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
IJE Manager
Keyword(s):  
Energy Supply ◽  
Fossil Fuels ◽  
Geographical Location ◽  
Weather Conditions ◽  
Past Century ◽  
Solar Pv ◽  
Pv Systems ◽  
Trade Offs ◽  
A Site ◽  
Selection Methodology

In the past century, fossil fuels have dominated energy supply in Indonesia. However, concerns over emissions are likely to change the future energy supply. As people become more conscious of environmental issues, alternatives for energy are sought to reduce the environmental impacts. These include renewable energy (RE) sources such as solar photovoltaic (PV) systems. However, most RE sources like solar PV are not available continuously since they depend on weather conditions, in addition to geographical location. Bali has a stable and long sunny day with 12 hours of daylight throughout the year and an average insolation of 5.3 kWh/m2 per day. This study looks at the potential for on-grid solar PV to decarbonize energy in Bali. A site selection methodology using GIS is applied to measure solar PV potential. Firstly, the study investigates the boundaries related to environmental acceptability and economic objectives for land use in Bali. Secondly, the potential of solar energy is estimated by defining the suitable areas, given the technical assumptions of solar PV. Finally, the study extends the analysis to calculate the reduction in emissions when the calculated potential is installed. Some technical factors, such as tilting solar, and intermittency throughout the day, are outside the scope of this study. Based on this model, Bali has an annual electricity potential for 32-53 TWh from solar PV using amorphous thin-film silicon as the cheapest option. This potential amount to three times the electricity supply for the island in 2024 which is estimated at 10 TWh. Bali has an excessive potential to support its own electricity demand with renewables, however, some limitations exist with some trade-offs to realize the idea. These results aim to build a developmental vision of solar PV systems in Bali based on available land and the region’s irradiation.

Potensi Nilai Kalor Biomassa Dari Ampas Tebu (Bagasse) Yang Bersumber Dari Penjual Minuman Sari Tebu Di Kota Pontianak

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Reza Wahyudi ◽  
Muhammad Ivanto ◽  
Murti Juliandari
Keyword(s):  
Laboratory Testing ◽  
Energy Supply ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Calorific Value ◽  
Ash Content ◽  
Sugarcane Juice ◽  
Test Results ◽  
Supply Problem ◽  
Direct Data

Dependence on the provision of electricity using fossil fuels is a major energy supply problem in Indonesia. Therefore, it is necessary to provide new and renewable alternative fuels that are effective, efficient, and environmentally friendly. One of the alternative fuels is bagasse biomass. The purpose of this study was to determine the amount of bagasse produced by sellers of sugarcane juice drink in Pontianak City, in order to determine the estimated value of bagasse. The research method used was direct data collection and laboratory testing . Based on the results of the study, the number of vendors of sugarcane juice beverages producing bagasse was 169. Of this amount, produce bagasse that can reach 1,030.9 kg/day. Based on the test results, the estimated moisture content of bagasse was 3.28%, ash content was 0.77%, and carbon remained at 7.65%. So, if converted with the test results of the calorific value of bagasse and made into briquettes bagasse (bio briquettes), which is 19,648 kJ/kg with a density of 0.416 kg/m3, then converted into a potential calorific value of 242,849,280 J/year.

scholarly journals The Power to Change: A Brief Survey of The Wind Power’s Technological and Societal Potential, Barriers to Use, and Ways Forward

2019 ◽  
Vol 1 (1) ◽  
pp. p11
Author(s):  
Helen Kopnina
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Power ◽  
Energy Supply ◽  
Fossil Fuels ◽  
Energy Transition ◽  
Low Carbon ◽  
Close Relationship ◽  
The Government ◽  
Carbon Dependency

With the effects of climate change linked to the use of fossil fuels, as well as the prospect of their eventual depletion, becoming more noticeable, political establishment and society appear ready to switch towards using renewable energy. Solar power and wind power are considered to be the most significant source of global low-carbon energy supply. Wind energy continues to expand as it becomes cheaper and more technologically advanced. Yet, despite these expectations and developments, fossil fuels still comprise nine-tenths of the global commercial energy supply. In this article, the history, technology, and politics involved in the production and barriers to acceptance of wind energy will be explored. The central question is why, despite the problems associated with the use of fossil fuels, carbon dependency has not yet given way to the more ecologically benign forms of energy. Having briefly surveyed some literature on the role of political and corporate stakeholders, as well as theories relating to sociological and psychological factors responsible for the grassroots’ resistance (“not in my backyard” or NIMBYs) to renewable energy, the findings indicate that motivation for opposition to wind power varies. While the grassroots resistance is often fueled by the mistrust of the government, the governments’ reason for resisting renewable energy can be explained by their history of a close relationship with the industrial partners. This article develops an argument that understanding of various motivations for resistance at different stakeholder levels opens up space for better strategies for a successful energy transition.

scholarly journals What to Expect from the 2020 Gas Package

2019 ◽  
Vol 7 (1) ◽  
pp. 165-169 ◽  
Author(s):  
Maria Olczak ◽  
Andris Piebalgs
Keyword(s):  
Climate Change ◽  
Greenhouse Gases ◽  
European Commission ◽  
Energy Supply ◽  
Fossil Fuels ◽  
Gas Production ◽  
Electricity Sector ◽  
Renewable Electricity ◽  
And Storage ◽  
The Eu

Gas is considered an important part of the European Union’s (EU) energy mix. Making up a quarter of the energy consumed in the EU, it is widely used by both households and industry. Gas supports the penetration of intermittent renewable electricity and is considered the cleanest of the fossil fuels but its combustion emits a considerable amount of greenhouse gases. In the fight against climate change, the EU has committed itself to the near-complete decarbonisation of the energy sector well before 2050. This will have a significant impact on the gas sector, especially in the EU, which has significant gas transportation and storage assets. This commentary examines two potential pathways that could enable the gas sector to contribute to the EU’s decarbonisation efforts while continuing to play a substantial role in the EU’s energy supply. The pathways include gas and electricity sector coupling and the substantial increase of renewable gas production. Those options, which are not mutually exclusive, provide an opportunity for the gas sector to thrive in a decarbonised energy future. In some cases, it could require changes in the EU’s gas legislation announced by the European Commission to be proposed in 2020.

scholarly journals The Problem with People

2011 ◽  
Vol 1 (1) ◽  
Author(s):  
David Campbell
Keyword(s):  
Climate Change ◽  
Energy Supply ◽  
Fossil Fuels ◽  
Energy Resources ◽  
Political Issue ◽  
The Public ◽  
The Past ◽  
Primary Driver ◽  
Change Problem ◽  
Energy Supply Security

Climate change has become a critical political issue in the past twenty years. However, there is a related issue that is often overlooked by governments, industry, and the public: energy supply security, defined by the IAEA (2007) as “...the ability of a nation to muster the energy resources needed to ensure its welfare” (n.p.). Conventional energy requires the burning of fossil fuels, which releases carbon dioxide, the primary driver behind climate change (Pulles & Amstel, 2010, p. 4). Because of this, the problems of our dependence on fossil fuels and carbon fuelled global warming are interrelated. As such, solving the climate change problem may mitigate energy concerns. However, the potentially disastrous consequences of climate change will not be felt immediately while energy is critical to our daily survival; so, energy issues are arguably a more pressing concern.

scholarly journals SOSIALISASI POTENSI ENERGI TERBARUKAN ANGIN (BAYU) ANTARA UNIVERSITAS MATARAM (UNRAM) BEKERSAMA DENGAN UVERSITAS TEKNOLOGI SUMBAWA (UTS) DI PULAU SUMBAWA

2019 ◽  
Vol 1 (1) ◽  
pp. 22-26
Author(s):  
Made Sutha Yadnya ◽  
Teti Zubaidah ◽  
Abdullah Zainuddin ◽  
Bulkis Kanata ◽  
Paniran Paniran
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Energy Policy ◽  
Energy Supply ◽  
Fossil Fuels ◽  
Supply System ◽  
Energy Supply System ◽  
National Energy Policy

National Energy Policy, is to increase energy diversification through efforts to use renewable energy such as renewable non-fossil fuels, especially wind energy until 2025. By utilizing renewable energy, the dependence on fossil fuels on the national energy supply system can decrease. Sumbawa Island has the potential for wind energy around 220 KW (assuming each location is built 10 units)

scholarly journals Efficient Methods of Market Pricing in Power Industry within the Context of System Integration of Renewable Energy Sources

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3250 ◽  
Author(s):  
Evgeny Lisin ◽  
Galina Kurdiukova ◽  
Pavel Okley ◽  
Veronika Chernova
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Market Value ◽  
Economic Incentives ◽  
Energy Sources ◽  
Supply Systems ◽  
Energy Supply Systems

Currently, the majority of world economies (even those located in the sunbelt (+/− 35 degrees of latitude with good sunshine with low seasonality) uses various types of fossil fuels as the main source of energy for their economies. However, this represents a very volatile and unsustainable strategy, since according to various estimates, the fossil fuel era will inevitably end as all carbon fuels are going to be spent in the next few centuries. Unlike traditional energy, renewable energy sources (RES) are not based on energy resources, but rather rely upon natural energy flows. With regard to its unique property, there has been an active construction of power plants of renewable energy and their gradual integration into national energy supply systems in recent decades. At the same time, the existing models of electricity markets were unprepared for their wide distribution. Hence, determination of the market value of energy generated by power plants using renewable energy sources becomes a particularly significant issue. This market value has to take into account the prevention of costs from the use of fossil fuels, as well as the resulting environmental benefits. Our paper proposes methods for solving this problem, contributing to the increase of economic efficiency of investment projects for the construction of renewable energy facilities and the formation of economic incentives for their propagation in energy supply systems. The proposed methods are based on the dynamic differentiation of tariffs for consumers with renewable energy sources depending on their structure of electricity consumption. Its effectiveness is demonstrated by calculating the cost of electricity for households located in the Krasnodar region using renewable energy sources. It is shown that this approach to the formation of tariffs for consumers allows the household to receive additional savings from the efficient use of energy installations on RES and energy storage devices in terms of alignment of the energy consumption schedule. This creates a significant incentive for households to use them and contributes to increasing the effectiveness of government renewable energy support programs, including by solving the acute problem of raising electricity tariffs from the grid.

Biofi xation of CO2 from Synthetic Combustion Gas Using Cultivated Microalgae in Three-Stage Serial Tubular Photobioreactors

2011 ◽  
Vol 66 (5-6) ◽  
pp. 313-318
Author(s):  
Michele G. Morais ◽  
Elisângela M. Radmann ◽  
Jorge A. V. Costa
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides ◽  
Efficient Method ◽  
Energy Supply ◽  
Fossil Fuels ◽  
Scenedesmus Obliquus ◽  
Sulfur Oxides ◽  
Combustion Gas ◽  
Production Methods ◽  
Tubular Photobioreactors

Coal is the most abundant of the fossil fuels, with reserves estimated at 102 billions of tons. The feasibility of using coal as a fuel depends upon reducing emissions of gas when it is burnt, such as carbon dioxide (CO2), sulfur oxides (SOx), and nitrogen oxides (NOx). The removal of CO2 with microalgae may be one of the most efficient ways of reducing this gas, without the need for radical changes in the world’s energy supply and production methods. Spirulina sp. LEB-18 and Scenedesmus obliquus LEB-22 were cultivated in serial tubular photobioreactors, with the aim of measuring the potential of CO2 biofixation and the resistance of the microalgae to SO2 and NO. Spirulina sp. and S. obliquus had CO2 biofixation scores of 0.27 and 0.22 g L-1 d-1, respectively. Both microalgae were resistant to SO2 and NO, and grew during the 15 d they were cultivated, which proves that using microalgae is an efficient method of biofixation of CO2 emitted when fossil fuels are burnt.

Sign in / Sign up

Export Citation Format

Share Document