scholarly journals The Effect of Retail Electricity Price Levels on the Financial Indicators of Smart-Grid Rooftop Solar Power Systems: A Case Study in the Central Highlands of Vietnam

2020 ◽  
Author(s):  
Tran Thi Lan ◽  
Sopin Jirakiattikul ◽  
Niem Duc Le ◽  
M. S. Chowdhury ◽  
Dilawer Ali ◽  
...  
Keyword(s):  
Smart Grid ◽  
Economic Efficiency ◽  
Alternative Energy ◽  
Net Present Value ◽  
Solar Power ◽  
Electricity Consumption ◽  
Electricity Price ◽  
Financial Indicators ◽  
Central Highlands ◽  
Rooftop Solar

Abstract Background: There are many constraints on the use of fossil fuels and, many countries have, therefore, conducted research relating to alternative energy resources to replace conventional fuels. On 31 January 2019, the Vietnamese Ministry of Finance enacted a preferential policy relating to the installation of under-50kWp rooftop solar projects. The Central Highlands of Vietnam has a high potential for solar power generation due to the duration of sunshine it enjoys, and the development of both rooftops solar and solar farms is appropriate for the region. The study reported investigated the economic efficiency of smart-grid rooftop solar electricity systems (SG rooftop PV) in the Central Highlands of Vietnam in light of the different levels of retail electricity pricing in Vietnam and the implementation of a feed-in-tariff system. The research reported in this paper will be useful for many groups of stakeholders, including electricity consumers who intend to install rooftop solar panels on their houses, companies who supply SG rooftop PV, and policymakers, who can use the findings relating to SG rooftop PV to adjust the retail price of electricity during different periods.Method: Financial indicators were calculated based on the net present value, payback period, internal rate of return, and the number of hours of sunshine in the Central Highlands of VietnamResult: The study’s results show that the electricity price level affects the economic efficiency of SG rooftop PV. In particular, SG rooftop PV installed to satisfy higher levels of electricity consumption, which attract a higher retail electricity price, result in greater benefits, especially when domestic electricity consumption exceeds 400 kWh, at which level the retail electricity price is at the highest level. In this case, people who install SG rooftop PV and use all the electricity to satisfy domestic consumption will recoup their investment in only 4 years and thereafter will enjoy free electricity. Conclusion: All the financial indicators derived from this research show that people in the Central Highlands of Vietnam can derive benefit from installing SG rooftop PV, whether they sell all the electricity output to the grid or use the power output to satisfy their domestic demand.

scholarly journals The Effect of Retail Electricity Price Levels on the FI Values of Smart-Grid Rooftop Solar Power Systems: A Case Study in the Central Highlands of Vietnam

2020 ◽  
Vol 12 (21) ◽  
pp. 9209
Author(s):  
Tran Thi Lan ◽  
Sopin Jirakiattikul ◽  
M. S. Chowdhury ◽  
Dilawer Ali ◽  
Le Duc Niem ◽  
...  
Keyword(s):  
Smart Grid ◽  
Power Systems ◽  
Net Present Value ◽  
Sunshine Duration ◽  
Energy Resource ◽  
Electricity Consumption ◽  
Electricity Price ◽  
Central Highlands ◽  
Solar Electricity ◽  
Rooftop Solar

Smart-grid rooftop solar electricity (SG rooftop PV) is an alternative sustainable energy resource. This research was conducted in the Central Highlands of Vietnam (CHV) in light of the different levels of retail electricity pricing, the sunshine duration, and the implementation of a feed-in-tariff system, in order to calculate the financial indicators (FIs) of SG rooftop PV, which would supply investors, companies supplying SG rooftop PV, and policymakers with useful information. The FI values were calculated based on the net present value, the payback period, and the internal return rate. The results show that the electricity retail price level affects the FI of SG rooftop PV. SG rooftop PV is installed to satisfy higher electricity consumption levels, which attracts a higher retail electricity price. As a result of the greater benefits, especially if SG rooftop PV is installed and the highest level of electricity (exceeds 400 kWh) is used to satisfy domestic consumption, users will recoup their investment in only four years and after that will enjoy free electricity. All the FI values derived from this research show that people in the CHV can derive benefits from installing SG rooftop PV.

scholarly journals The intention of households in the Daklak province to instal smart grid rooftop solar electricity systems

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tran Thi Lan ◽  
Sopin Jirakiattikul ◽  
Le Duc Niem ◽  
Kuaanan Techato
Keyword(s):  
Smart Grid ◽  
Alternative Energy ◽  
Electricity Consumption ◽  
Binary Model ◽  
Government Incentives ◽  
Central Highlands ◽  
The Government ◽  
Solar Electricity ◽  
Electricity Systems ◽  
Rooftop Solar

Abstract Background Smart grid rooftop solar electricity is a useful power resource and a viable alternative to conventionally generated energy. In the context of Vietnam, it could help people control their own source of electrical power and reduce power outages. This problem is expected to worsen in the future. Previous studies have shown that very few smart grid rooftop solar electricity systems have been installed by households in the Daklak Province, in the Central Highlands of Vietnam, and that as of 30th May 2019, only 18 out of 435,688 households had installed such a system. Moreover, only a small number of people knew about this resource. Method Based on previous investigations, this study proposed a research model that includes factors, which might affect the intention to instal smart grid rooftop solar electricity systems. However, the amount of money that people would be willing to pay (WTP) for the installation of such systems depends on their current electricity consumption. Therefore, to investigate this issue, a questionnaire was developed to survey 300 households in the Daklak Province, in the Central Highlands of Vietnam. A probit binary model was used to analyse the collected data from the questionnaire for this study. Results After interviewing the respondents from the 300 households in the research area and introducing into the concept and benefits of the smart grid solar electricity generating systems, they were more aware and knowledgeable of the concept. Thirty-three percent of households mentioned that they intended to instal such a system and were willing to pay between USD 1240 and USD 2220 for an appropriate-sized system based on their current electricity consumption and needs. Those households that possessed a high awareness of smart grid rooftop solar power were more likely to express the intention to instal such a system. However, it was also revealed that government incentives and household attitudes were important factors that influence the intention to instal such a system. In contrast, factors such as environmental concerns and the innovativeness of households were less influential. Conclusion The awareness and understanding of the 309 households surveyed in this study regarding smart grid rooftop solar electricity systems and government incentives were the leading factors that affected the people’s intention to instal such systems. The majority of the respondents were willing to pay between USD 1240 and USD 2220 for installing such a system. In progressing this initiative in Vietnam, based on the results of this study, the Vietnamese government could identify those households that have the necessary degree of knowledge and awareness of such systems and offering incentives to instal such systems. The government could also develop communication programmes and other initiatives to enhance the understanding and awareness of the community of rooftop solar electricity so that programmes for the development of alternative energy sources could be more effective.

scholarly journals Utilization of Solar Power Plant as an Alternative Energy Sources Solar Applications in Building System

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Jamaaluddin Jamaaluddin
Keyword(s):  
Solar Energy ◽  
Alternative Energy ◽  
Net Present Value ◽  
Solar Power ◽  
Operating Cost ◽  
Photovoltaic Cell ◽  
Energy Sources ◽  
Grid System ◽  
Alternative Energy Sources ◽  
Building System

Solar energy is one source of energy and has advantages compared with fossil energy sources. Solar energy is very necessary to be researched and developed further, including at the University of Muhammadiyah Sidoarjo. Utilization of solar energy, it is by preparing the installation of Photovoltaic Cell (solar cells) to determine the placement position and angle of the slope. The utilization of solar power will be applied at the Laboratory of Electrical Engineering University of Muhammadiyah Sidoarjo to make Solar Building System (SBS). This study will carry out an analysis of the utilization of solar energy compared to using the resources of PT. State Electricity Company (PT. PLN). The analysis was done with the installation of SBS consider investment and installation costs grid drawn on the Net Present Value, and compare the operating cost between SBS with the grid system. This research show the results of the analysis in gain by using SBS will have a value higher efficiency compared to the grid system at a certain time span by considering Break Event Point (BEP) SBS installation investment. Over 21 Years. 

scholarly journals Technical and Economical Feasibility Analysis on Household-Scale Rooftop Solar Power Plant Design with On-Grid System in Semarang City

2021 ◽  
pp. 14-20
Author(s):  
Windarta Jaka ◽  
Saptadi Singgih ◽  
Denis Denis ◽  
Adi Satrio Dimas ◽  
Soritua Silaen Johanes
Keyword(s):  
Power Plant ◽  
Net Present Value ◽  
Solar Power ◽  
Cost Ratio ◽  
Solar Power Plant ◽  
Plant Design ◽  
Grid System ◽  
Solar Panels ◽  
Benefit Cost Ratio ◽  
Rooftop Solar

Utilizing rooftops as a solar power plant system on the grid can be an effective and efficient solution to reduce electricity bills. This research aims to design and analyze the potential of 1215 Wp solar power plant rooftop with on grid system household scale in terms of techno economy. Using each of the two alternatives to the main components of solar panels and inverters, there were 4 variations of the component configuration design in this study. Variation 1 uses Canadian solar panels with solax inverters. Variation 2 uses Canadian solar panels with so far inverters. Variation 3 uses risen solar panels with solax inverters. Variation 4 uses risen solar panels with sofar inverter. Through PVSyst 6.43 software, with an average radiation average of 5.48 kWh/m2/day, the potential energy production of each variation of 1215 Wp rooftop solar power plant household scale are 1873 kWh, 1893 kWh, 1865 kWh and 1885 kWh. The investment cost of 1215 Wp rooftop solar power plant ranges from IDR25,220,000-IDR27,020,000 with Net Present Value ranges from IDR15,309,805- IDR17,421,839, Benefit Cost Ratio ranges from 1,489-1,588, Payback period ranges from 10.38 – 11.02 years and Internal Rate of Return value ranges from 8.8-9.56%.

scholarly journals Pengaruh Sudut B dan W pada PLTS di PT Indonesia Power

Jurnal METTEK ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 62
Author(s):  
Rinaldo Siahaan ◽  
IGB Wijaya Kusuma ◽  
IW Bandem Adnyana
Keyword(s):  
Output Power ◽  
Alternative Energy ◽  
Power Plants ◽  
Solar Power ◽  
Slope Angle ◽  
Electricity Consumption ◽  
Production Costs ◽  
Solar Panels ◽  
Reduce Electricity Consumption ◽  
Solar Power Plants

Energi surya merupakan energi terbarukan yang jumlahnya tidak terbatas sehingga sangat berpotensi dimanfaatkan sebagai sumber energi alternatif yang sangat ramah lingkungan. Salah satu pembangkit energi listrik tenaga surya ada di PT Indonesia Power Unit Bisnis Pembangkitan Bali tepatnya di gedung A dan telah dilakukan penelitian pada bulan November sampai bulan Desember dari pukul 08.00 sampai 16.00. Penelitian ini bertujuan untuk mengetahui sudut kemiringan panel surya (?) dan sudut jam (?) yang tepat sehingga pembangkit listrik tenaga surya menghasilkan efisiensi dan energi yang optimum yang mana akan mengurangi pemakaian energi listrik dan dengan biaya produksi yang lebih murah. Hasil penelitian ini menunjukkan bahwa sudut jam (?) panel surya mempengaruhi intensitas dan daya output panel surya dicapai lebih cepat 1 jam jika sudut (?) bernilai -15° dan sebaliknya. Dan hasil penelitian ini juga menunjukkan sudut kemiringan (?) panel surya yang paling tepat dibandingkan dengan yang terpasang saat ini adalah 15° menghadap selatan dengan peningkatan intensitas yang diterima panel surya 60,60%, peningkatan daya output 81,80% dan peningkatan efisiensi 13,38%.   Solar energy is an unlimited amount of renewable energy that has the potential to be used as an alternative energy source that is very environmentally friendly. One of the solar power plants in PT Indonesia Power Generation Business Unit Bali precisely in building A and has been conducted research in November to December from 08.00 am to 16.00 pm. This study aims to determine the slope angle of solar panels (?) and clock angle (?) that are right so that solar power plants produce optimum efficiency and energy which will reduce electricity consumption and with lower production costs. The results of this study indicate that the clock angle (?) of solar panels affects the intensity and output power of solar panels achieved 1 hour faster if the angle (?) is -15 ° and vice versa. And the results of this study also show the most appropriate slope angle (?) of solar panels compared to the one currently installed is 15° south with an increase in intensity received by solar panels 60,60%, increase in output power 81,80% and increase in efficiency 13,38 %

Operating Experience of a 20kW Rooftop Solar Power Plant

2018 ◽  
Author(s):  
P. K. Verma ◽  
A. K. Vishnoi ◽  
Naveen Kumar ◽  
Arun K. Nayak ◽  
G. J. Gorade ◽  
...  
Keyword(s):  
Power Plant ◽  
Solar Power ◽  
Operating Experience ◽  
Solar Power Plant ◽  
Rooftop Solar

scholarly journals Design and simulation of a 1-GWp solar photovoltaic power station in Sudan

Clean Energy ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 57-78
Author(s):  
Sohaib Nasr Mohamed Abdalla ◽  
Hakan Özcan
Keyword(s):  
Solar Energy ◽  
Net Present Value ◽  
Solar Power ◽  
Northern Region ◽  
Solar Photovoltaic ◽  
Power Station ◽  
Levelized Cost Of Electricity ◽  
Solar Plant ◽  
Performance Rate ◽  
The City

Abstract Developing nations have a critical need to increase electricity supply. Sudan has much unrealized potential for generating solar energy, particularly in the northern region. This research study focuses on designing a 1-GW solar power station in northern Sudan using the PVsyst7.0 software program. To determine the appropriate location for the solar-energy station, 14 criteria were evaluated. This process is generic and suitable for use in any other country. The method for conducting cash-flow estimates and return on investment is illustrated in the economic evaluation. The city of Dongola, the capital of the northern state, was selected because of its high annual irradiance on a horizontal surface at ~2333.2 kWh/m2. The simulation results show that the annual optimum tilt angle of inclination for photovoltaic (PV) modules is 30°, the energy production is 1 979 259 MWh/yr and the average annual performance rate is 0.810. In addition, the electric power consumption per capita in Sudan is 269 kWh/yr, so the proposed solar power plant with 1 979 259 MWh/yr can provide energy to 7.4 million people per year annually and reduce carbon emissions by ~18 million tons of carbon dioxide per year. Economic calculations show that the levelized cost of electricity (LCOE) is $0.06/kWh, the discounted payback period is ~11 years and the net present value is $635 291 000. As a result, the proposed grid-connected PV solar plant is considered economically, technically and environmentally feasible in Sudan.

scholarly journals Method for Sizing of a PV System for Family Home Using Economic Indicators

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4529
Author(s):  
Zvonimir Šimić ◽  
Danijel Topić ◽  
Ilija Crnogorac ◽  
Goran Knežević
Keyword(s):  
Input Data ◽  
Net Present Value ◽  
Market Price ◽  
System Size ◽  
Electricity Price ◽  
Economic Indicators ◽  
Solar Irradiation ◽  
Pv System ◽  
Output Data ◽  
Levelized Cost Of Electricity

This paper presents a method for finding an optimal photovoltaic (PV) system according to Croatian legislation. The PV sizing model, in which a decision on investment is made according to economic indicators, is made using MATLAB Software. Based on the input data, the monthly PV system production is calculated, and electricity price formed. According to the PV system production and electricity price, economic indicators are calculated and obtained as output data. The model input data are solar irradiation, load diagram, PV system costs and market price of electricity while the model output data are PV system production, savings, profit, incomes, Net Present Value (NPV) and Levelized Cost of Electricity (LCOE). The obtained economic indicators are presented graphically and used for decision making on an optimal PV system size. The presented model is applied and presented in a case study.

Problems of adoption of solar power and subsequent switching behavior: an exploration in India

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Subhadip Roy ◽  
Subhalaxmi Mohapatra
Keyword(s):  
Behavioral Intentions ◽  
Structural Equation ◽  
Alternative Energy ◽  
Solar Power ◽  
Switching Behavior ◽  
Energy Sources ◽  
Energy Usage ◽  
Content Type ◽  
Household Level ◽  
Alternative Energy Sources

Purpose The challenges and factors of household adoption and the use of alternative energy sources have been a point of discussion among researchers. The purpose of this study is to apply a variant of the unified theory of adoption and use of technology (i.e. UTAUT 2) to explore the effect of various constructs that influence technology adoption on the consumers’ intention to adopt (and use) solar power generators (SPG) at the household level and the subsequent switching behavior. Design/methodology/approach Based on survey data collected from six cities in India (n = 1,246), factor analysis and structural equation modeling are applied for data analysis and testing the study hypotheses. Findings The results of the structural equation model found UTAUT constructs performance expectancy, effort expectancy, social influence and hedonic to positively affect behavioral intentions to adopt SPG. However, facilitating conditions and perceived value was not found to affect behavioral intentions to adopt SPG. Behavioral intentions to adopt SPG was found to positively influence the switching behavior. Research limitations/implications The present study augments the domain of alternative energy usage behavior by applying the UTAUT 2 in the adoption of alternative energy sources (namely, solar) and subsequent switching behavior from traditional sources at the household level. Practical implications The findings from the present study will guide the marketers and policymakers on the consumer attitudinal and behavioral aspects of solar energy usage at the household level and subsequent switching behavior. Originality/value The present study is novel as it moves beyond household-level behavioral intention to use solar energy and includes the switching behavior to shift to solar power from traditional energy sources.

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