Technical Economic Analysis of a Low Power Hybrid Wind-Solar System Grid Connected

2014 ◽  
Vol 704 ◽  
pp. 204-208
Author(s):  
Jorge Serván Sócola ◽  
Daniel Marcelo Aldana
Keyword(s):  
Energy Demand ◽  
Financial Analysis ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Residential Areas ◽  
Electrical Grid ◽  
Sizing System ◽  
Residential House ◽  
The Government ◽  
Main Components

The main aim of this work is to develop a methodology that allows performing an economic technical analysis of an energy generation system in base to renewable sources, with the capacity to feed to an average residential house connected to the electrical grid. As a first step should be to determine the energy demand for a residential user of the study area. Later, it performs an analysis in steady state of the energetic resources, in order to evaluate the energetic potential and right-sizing system available for energy demand estimated. Once dimensioned, the system proceeds to select the main components that conform it, makes the calculations for the dimensioning of the electrical system, and selects the type of structures of support as well as the location with a better provision inside the location area. Following each step of this methodology, it has been selected like a better alternative: a wind turbine of 2 kW and four photovoltaic panels of 240 Wp like main energetic sources of the hybrid, which will produce a total of 4055.24 kWh yearly, covering the annual demand with an surplus energy of 609.64 kWh a year and to a cost of 0.361 $/kWh, which is higher than the average cost of the electrical energy inside the residential areas. What concludes by the economic-financial analysis, the need of a co-financing and a policy of incentives from the government that benefits to the small auto-producers to use renewable energy sources.

scholarly journals Study of Energy Management and Audit

2020 ◽  
pp. 146-152
Author(s):  
G. Joga Rao ◽  
K. Pavan Srihari
Keyword(s):  
Energy Management ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Electrical Energy ◽  
Management Program ◽  
Energy Audit ◽  
Energy Auditing ◽  
Current Scenario ◽  
Residential House ◽  
The Government

The economic development of a country is often closely linked to its consumption of energy. The government has taken new steps for the development of renewable energy sources and less consideration in conservation of electrical energy in the society. According to the current scenario the demand of energy has increased and became a routine process in our lifestyle. Why electrical auditing and management is essential? Energy audit is the survey of wastage power in different areas like domestic houses, commercial buildings and industries etc. For getting solution to save electrical energy, energy auditing is best way. So we found in India the demand of electrical power rises at the rate of 9-10 % per annum while the generation of electrical power rises at the rate of 5-6 % per annum, ultimately the gap between demand and generation of electrical power is widening at the rate of 3-4 % per annum. Electrical energy auditing and management program can have an originating within one division of saving, motivating people in all forms to undergo conservation activities. In this project we had done the Energy audit in residential house.

scholarly journals A Sizing Method for PV–Battery–Generator Systems for Off-Grid Applications Based on the LCOE

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1988
Author(s):  
Ioannis E. Kosmadakis ◽  
Costas Elmasides
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Temporal Distribution ◽  
Electrical Energy ◽  
Optimal Number ◽  
Diesel Generator ◽  
Levelized Cost Of Electricity ◽  
Sufficient Power ◽  
Battery Energy

Electricity supply in nonelectrified areas can be covered by distributed renewable energy systems. The main disadvantage of these systems is the intermittent and often unpredictable nature of renewable energy sources. Moreover, the temporal distribution of renewable energy may not match that of energy demand. Systems that combine photovoltaic modules with electrical energy storage (EES) can eliminate the above disadvantages. However, the adoption of such solutions is often financially prohibitive. Therefore, all parameters that lead to a functionally reliable and self-sufficient power generation system should be carefully considered during the design phase of such systems. This study proposes a sizing method for off-grid electrification systems consisting of photovoltaics (PV), batteries, and a diesel generator set. The method is based on the optimal number of PV panels and battery energy capacity whilst minimizing the levelized cost of electricity (LCOE) for a period of 25 years. Validations against a synthesized load profile produced grid-independent systems backed by different accumulator technologies, with LCOEs ranging from 0.34 EUR/kWh to 0.46 EUR/kWh. The applied algorithm emphasizes a parameter of useful energy as a key output parameter for which the solar harvest is maximized in parallel with the minimization of the LCOE.

scholarly journals Renewable Energy for Sustainable Growth and Development: An Evaluation of Law and Policy of Bangladesh

2019 ◽  
Vol 11 (20) ◽  
pp. 5774 ◽  
Author(s):  
Karim ◽  
Karim ◽  
Islam ◽  
Muhammad-Sukki ◽  
Bani ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Public Awareness ◽  
Renewable Energy Sources ◽  
National Development ◽  
Sustainable Growth ◽  
Initial Attempt ◽  
Policy Initiatives ◽  
Secondary Sources ◽  
The Government

Bangladesh’s constant growth with an annual 6% plus Gross Domestic Product (GDP) for more than the last two decades and achievements in other socio-economic metrics in recent times is impressive and recognized by various global authoritative bodies. The extent of overwhelming economic ventures in the private sector coupled with the commitments of the government clearly demonstrates the transformation of the country from a primarily agro-based economy to one influenced by the manufacturing and service sectors. Bangladesh is fortunate to have fossil fuel reserves on a limited scale, though these are not enough to run the ongoing massive scale development activities, both in private and public sectors. Thus, the constant and uninterrupted supply of energy at an affordable price remains a serious concern for the successive governments. Therefore, this issue of supply of constant energy has turned to be an important part in the national development agenda. Besides, the country is one of the worst victim nations of the devastating effects of global warming and climate change. As Bangladesh is geographically located in a favorable place in the world map with the availability of plenty of renewable energy sources (RES), the policymakers started to take initiatives leading to exploiting these sources to meet the energy demand of the country. There are both prospects and administrative, legal, technological, socio-cultural and environmental challenges. To address these challenges, it requires comprehensive policy initiatives. A good number of technical and scientific research containing findings and recommendations are available. This paper, which is based on adopting a qualitative research methodology where the contents of secondary sources were analyzed, is an initial attempt to highlight the renewable energy developments in Bangladesh, and subsequently, to evaluate the relevant legal and policy initiatives in the light of international best practices. We advance several recommendations that the stakeholders can consider exploiting RES effectively to attain inclusive, equitable and sustainable development in Bangladesh. These include, inter alia: (1) Enhancing government participation to lead the development of renewable energy (RE); (2) ensuring localization of RE technology; (3) reducing the expenses of energy generation through RES and providing assistance in initial investments; (4) introducing comprehensive legal and regulatory policy for the development of RE industry in Bangladesh; and (5) conducting effective public awareness.

scholarly journals Deployment of Hydropower in Nepal: Multiple Stakeholders’ Perspectives

2020 ◽  
Vol 12 (16) ◽  
pp. 6312
Author(s):  
Rana Pratap Singh ◽  
Hans Peter Nachtnebel ◽  
Nadejda Komendantova
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
National Policy ◽  
Secondary Source ◽  
Scoring Method ◽  
Energy Needs ◽  
Generation Capacity ◽  
The Government ◽  
Multi Stakeholder

Nepal could rely on its huge renewable energy potentials to meet its energy demand sustainably. Also, renewable energy sources are considered by several national policy makers and international organizations as an engine for socio-economic development of the country, which can provide access to electricity to everybody and stimulate economic activity and economic growth. Several efforts were taken by the national government to stimulate deployment of renewable energy electricity generation capacities. However, the country is still not able to cover its energy needs with renewable energy despite decades of efforts for their deployment. The assumption of this research was that uncertainty in energy policy and planning gaps in Nepal are connected with the dominance of a limited number of discourses and ignorance of other voices which might be helpful. Nowadays, evidence exists that a multi-stakeholder and multi-sector perspective is extremely important for sustainable development. We provide evaluation of various perspectives, including technical, social, economic, environmental, and political. We collect empirical data in frames of a comprehensive stakeholders’ process in Nepal. The stakeholders’ preferences are analyzed through various methods of decision support sciences such as multi criteria decision analysis. To fast track hydropower development, the government has classified them into five categories based on their generation capacity. Assessment of each category and their collective comparison on multiperspectives has never been tried. Hence, such an assessment leading towards their prioritization is the objective of the study. It may help to identify a suitable strategy or policy to maximize national benefits. The study carried within the framework of five alternatives (categories) of hydropower schemes and nine different hydropower perspectives applicable in Nepalese context. The scoring method based is on secondary source evidence is applied for assessment. The study ranks medium schemes (25 to 100 MW) as best in Nepalese context.

scholarly journals Sizing, Optimization, and Financial Analysis of a Green Hydrogen Refueling Station in Remote Regions

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 547
Author(s):  
Kosmas A. Kavadias ◽  
Vasileios Kosmas ◽  
Stefanos Tzelepis
Keyword(s):  
Fossil Fuels ◽  
Financial Analysis ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy Carrier ◽  
Transport Sector ◽  
Optimum Configuration ◽  
Viable Solution ◽  
Fuel Cell Electric Vehicles ◽  
Wind Park

Hydrogen (H2) can be a promising energy carrier for decarbonizing the economy and especially the transport sector, which is considered as one of the sectors with high carbon emissions due to the extensive use of fossil fuels. H2 is a nontoxic energy carrier that could replace fossil fuels. Fuel Cell Electric Vehicles (FCEVs) can decrease air pollution and reduce greenhouse gases when H2 is produced from Renewable Energy Sources (RES) and at the same time being accessible through a widespread network of Hydrogen Refueling Stations (HRSs). In this study, both the sizing of the equipment and financial analysis were performed for an HRS supplied with H2 from the excess electrical energy of a 10 MW wind park. The aim was to determine the optimum configuration of an HRS under the investigation of six different scenarios with various numbers of FCEVs and monthly demands, as well as ascertaining the economic viability of each examined scenario. The effect of the number of vehicles that the installation can refuel to balance the initial cost of the investment and the fuel cost in remote regions was investigated. The results showed that a wind-powered HRS could be a viable solution when sized appropriately and H2 can be used as a storage mean for the rejected wind energy. It was concluded that scenarios with low FCEVs penetration have low economic performance since the payback period presented significantly high values.

scholarly journals The Investigation of Savonius Type and Darrieus H Type Wind Turbine Simulation with Wind Speed Variable

2021 ◽  
Vol 1 (2) ◽  
pp. 19-26
Author(s):  
Wibby Aditya Putra Utama ◽  
Yohandri Bow ◽  
M. Syahirman Yusi
Keyword(s):  
Renewable Energy ◽  
Wind Speed ◽  
Wind Turbine ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Renewable Energy Resources ◽  
Vertical Axis Wind Turbine ◽  
Fan Speed

The demand for electrical energy that continues to increase along with the advancement of civilization and also the increasing number of people as well as the reduced level of fulfillment and availability of non-renewable energy sources, it is necessary to have renewable energy resources that capable of fulfill these energy demand in a more environmental friendly. One of the natural energies that we can use is wind energy, which is easy to get and lasts continuously. This research examines the comparison of the power generated from the vertical axis wind turbine savonius type and darrieus H type. The wind that use in this research get from from the fan. The test is doing by varying the wind speed by adjusting the fan speed. The fan is directed to the wind turbine to rotate the wind turbine. To measure the wind speed produced by the fan, a digital anemometer is used. The result of this research is the relation data of voltage to rpm and voltage to wind speed of wind turbine.

scholarly journals Biomass and waste as a renewable and sustainable energy source in Vietnam

2014 ◽  
Vol 6 (1) ◽  
pp. 4-12 ◽  
Author(s):  
Matthias Schirmer
Keyword(s):  
Energy Demand ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Legal Framework ◽  
Energy Sector ◽  
Current Status ◽  
Viet Nam ◽  
Economic Sectors ◽  
The Government ◽  
Further Development

Due to Vietnam’s economic development its energy demand will continue to rise by 12–16% annually over the next few years. The government has realized that supply problems in the energy sector pose a significant threat to further development. Therefore, it is making concerted efforts to modernize the existing energy sector and expand the generating structure. There are ambitious expansion plans in the field of renewable energy sources, too. Owing to its very high potential, biomass could play a key role in energy production. This paper attempts to analyze the current status of biomass based energy production in Vietnam addressing variety of aspects such as biomass potential, legal framework as well as financial aspect. Section 4 contains an overview of ongoing bioenergy projects. Instead of providing a complete picture, these examples are intended to illustrate the various ways in which biomass can be used in different economic sectors. Finally existing barriers as well as action to incentivise bioenergy are discussed. Do phát triển kinh tế, nhu cầu năng lượng của Việt Nam sẽ tiếp tục tăng 12-16% mỗi năm trong vài năm tới. Chính phủ đã nhận ra rằng vấn đề cung cấp trong lĩnh vực năng lượng gây ra một mối đe dọa đáng kể cho sự phát triển tiếp theo. Vì vậy, có các nỗ lực để hiện đại hóa ngành năng lượng hiện có và mở rộng cấu trúc sản sinh năng lượng. Cũng có những kế hoạch mở rộng đầy tham vọng trong lĩnh vực nguồn năng lượng tái tạo. Do có tiềm năng rất cao, sinh khối có thể đóng một vai trò quan trọng trong sản xuất năng lượng. Bài viết này cố gắng phân tích tình trạng hiện tại của sản xuất năng lượng sinh khối tại Việt Nam giải quyết nhiều khía cạnh như tiềm năng sinh khối, khuôn khổ pháp lý cũng như các khía cạnh về tài chính. Tổng quan về các dự án năng lượng sinh học đang diễn ra được trình bày trong phần 4. Thay vì cung cấp một bức tranh hoàn chỉnh, các ví dụ được dùng để minh họa cho những cách khác nhau, trong đó sinh khối có thể được sử dụng trong các lĩnh vực kinh tế khác nhau. Rào cản cuối cùng hiện tại cũng như hành động để khuyến khích năng lượng sinh học sẽ được thảo luận.

scholarly journals Turkey’s 2023 Energy Strategies and Investment Opportunities for Renewable Energy Sources: Site Selection Based on ELECTRE

2019 ◽  
Vol 11 (7) ◽  
pp. 2136 ◽  
Author(s):  
Ceren Erdin ◽  
Gokhan Ozkaya
Keyword(s):  
Renewable Energy ◽  
Site Selection ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Energy Potential ◽  
Turkish Government ◽  
The Government ◽  
Installed Capacity

In Turkey, current energy generations are not sufficient for the existing energy needs and besides, energy demand is expected to increase by 4–6 percent annually until 2023. Therefore, the government aims to increase the ratio of renewable energy resources (RES) in total installed capacity to 30 percent by 2023. By this date, total energy investments are expected to be approximately $110 billion. Turkey is the fastest growing energy market among the OECD countries. Therefore, Turkey is an attractive market for energy companies and investors. At this stage, site selection and deciding appropriate RES are the most important feasibility parameters for investment. In this study, “Site Selection in Turkey” issue for RES (solar, wind, hydroelectric, geothermal, biomass) is evaluated by the ELECTRE which is one of the Multi Criteria Decision Making (MCDM) methods. In addition, the reasons for choosing this method are explained according to the literature. The study emphasizes the importance of energy generation from renewable and sustainable sources and is concerned with improving the position of the country. The Turkish government offers many purchasing guarantees and high incentives, especially in the renewable energy sector. As a result of the analysis, the most suitable energy sources are presented according to the geography and energy potential of the regions. The study aims to inform energy firms and everyone related with RES about Turkey’s RES opportunities.

scholarly journals Compressed Air Energy Storage Installation for Renewable Energy Generation

2019 ◽  
Vol 112 ◽  
pp. 02010
Author(s):  
Claudia Borzea ◽  
Iulian Vlăducă ◽  
Dan Ionescu ◽  
Valentin Petrescu ◽  
Filip Niculescu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Demand ◽  
Electrical Power ◽  
Electrical Energy ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Electrical Grid ◽  
Air Supply ◽  
Asynchronous Generator ◽  
Renewable Energy Generation

Compressed Air Energy Storage (CAES) installations are used for storing electrical power, under the form of potential energy from compressed air. The heat generated during compression can be stored to improve the efficiency of compression-expansion cycle. The solution presented consists of a 100 kW screw compressor driven by a 110 kW asynchronous three-phase motor. The compressor supplies air into vessels which store it until a high electrical energy demand arises. At that time, the compressed air is released into a 132 kW screw expander whose shaft spins a 132 kW asynchronous generator, producing electric power and supplying it into the electrical grid. Before expansion, the air must be preheated in order to avoid the freezing of expansion equipment. If the heat generated during compression is used for air preheating before expansion, the process is adiabatic. A demonstrative model of the installation is currently being developed, with the expander part being completed so far. The maximum power to be produced was calculated to be around 100 kW. During expander commissioning tests with air supply from a 250 kW high pressure compressor, a maximum generated power of 49.7 kW was attained, expected to be higher when releasing air from the reservoirs.

Intertemporal change in the effect of economic growth on carbon emission in China

2021 ◽  
pp. 0958305X2110086
Author(s):  
Jingwen Zhang ◽  
Yin Dai ◽  
Chi-Wei Su ◽  
Dervis Kirikkaleli ◽  
Muhammad Umar
Keyword(s):  
Economic Growth ◽  
Granger Causality ◽  
Carbon Emissions ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Causality Test ◽  
Industrial Upgrading ◽  
Full Sample ◽  
Causality Tests ◽  
The Government

This research examines the factor of causality between the variables of economic growth and carbon emissions in China, by conducting full, and sub-sample Granger causality tests for the period of 1965 to 2019. The full-sample Granger causality test is not considered to be authentic, and is rather unstable, as indicated by the parameter stability tests. Therefore, we consider the time variation using a causality test, and the results indicate that the causality exists from the Gross Domestic Product (GDP) growth to the Carbon Dioxide (CO2) emissions. This development essentially suggests that economic growth is critical for China's environment. It also implies that carbon emissions are mainly determined by the increase in economic growth, at some specific period in time. Thus, in this regard, the use of renewable energy sources should be encouraged by policymakers, in order to deal with rise in the energy demand, and promote industrial upgrading, so as to slow down the rate degradation that the environment have been experiencing. However, our empirical results indicate that CO2 emissions are not the Granger reason to GDP. In this case, the government can formulate more conservative reduction policies that pertain to carbon emissions, and will therefore, not impede the economic growth.

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