scholarly journals A New Regulatory Approach for PV-Based Self-Supply, Validated by a Techno-Economic Assessment: A Case Study for Slovenia

2021 ◽  
Vol 13 (3) ◽  
pp. 1290
Author(s):  
Luka Martin Tomažič ◽  
Niko Lukač ◽  
Gorazd Štumberger
Keyword(s):  
Estimation Method ◽  
Economic Assessment ◽  
Assessment Method ◽  
Lidar Data ◽  
Pv System ◽  
Pv Systems ◽  
Regulatory Frameworks ◽  
Supply Policy ◽  
Regulatory Approach

When it comes to the proliferation of photovoltaic (PV) systems, technological solutions have to go hand in hand with optimized policy approaches and regulatory frameworks. This paper proposes a new application of state-of-the-art PV potential estimation method based on Light Detection And Ranging (LiDAR) data targeted toward individual household self-supply. The performance of the proposed general approach is demonstrated in the case of Slovenian PV based self-supply (yearly net self-sufficient energy supply) scheme and related policy. The results obtained by PV potential assessment method show drawbacks of the current policy solution in Slovenia, which limits the installed peak power of the PV systems to 80% of the rated power supply. The paper proposes to change the policy in a way that increases the yearly energy production of the PV system and assures proper voltage profiles in the electricity network. The paper is novel in terms of considering PV potential over LiDAR data by also considering self-sustainability, in using such techno-economic analysis to validate the merits and demerits of a policy approach and is the first such case study used in the context of Slovenian self-supply policy. The proposed PV potential estimation method is generally applicable for any location and can be easily adjusted to the local regulatory framework.

scholarly journals A Comparative Feasibility Study of Stand-Alone and Grid-Connected PV System for Residential Load: A Case Study in Iran

2021 ◽  
Vol 239 ◽  
pp. 00008
Author(s):  
Navid Hadifar ◽  
Amirreza Ayanlou
Keyword(s):  
Fossil Fuels ◽  
Economic Assessment ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Pv System ◽  
Grid Connection ◽  
Load Demand ◽  
Residential House ◽  
Micro Grids

With rising the environmental issues regarding the fossil fuels, the renewable energy resources (RES) could be as interesting scheme in supply side for micro grids. The aim of this paper is to investigate the feasibility of photovoltaic (PV) system in Iran both in grid-connected and island mode. The case study is a residential house in the city of Amol. The software of HOMER (Hybrid Optimization of Multiple Energy Resources) is used for analyzing the data for finding the optimal design among the various solutions which takes in to account electrical and economic assessment factors. In the section of grid-connection mode, two different simulation methods namely HOMER optimizer mode and optimal sizing design mode is used to better understand the grid participation with PV in supplying the power for load demand. Finally, the optimal and affordable design for selected region is grid-connected PV system which alleviate the energy need from grid.

Performance Analysis of PV Systems: Case study of Palestine Technical University (PTUK) PV Plant

2021 ◽  
Vol 9 (1) ◽  
pp. 10-21
Author(s):  
Mahmoud Ismail
Keyword(s):  
Performance Analysis ◽  
Energy Production ◽  
The Other ◽  
Performance Ratio ◽  
Solar Irradiation ◽  
Pv System ◽  
Pv Systems ◽  
Science Building ◽  
University Buildings

Performance ratio is one of the indicators used to describe the effectiveness of the PV systems. The sustainability of the PV system year after year as well as its reliability can be checked by measuring the performance ratio each year. This indicator will also enable us to carry out a comparison between the performances of different PV systems. In this paper, the performance ratios for five PV systems installed on the roof tops of some of PTUK university buildings have been calculated on monthly and yearly basis. The analysis has been carried out using the available data (energy production and solar irradiation) for the year 2019. It was found that the performance ratio has higher values for May and September in comparison with other months. On the other hand, its lowest values were obtained in winter months. This trend can be observed for all of the PV clusters on the five buildings.  When taking into account the overall system, the highest value for the performance ratio was 0.89, which was for September, whereas its lowest value of 0.70 was obtained in January. The performance ratio, which was calculated on yearly basis for the overall system, was found to be 0.80. When considering each building separately, the lowest value was 0.44 for the “Services” building whereas the highest value was 0.94 for the Science building.

Economic sustainability of ground mounted photovoltaic systems: an Italian case study

2015 ◽  
Vol 9 (2) ◽  
pp. 156-175 ◽  
Author(s):  
Domenico Campisi ◽  
Donato Morea ◽  
Elisa Farinelli
Keyword(s):  
Debt Service ◽  
Government Policies ◽  
Critical Element ◽  
Pv System ◽  
Content Type ◽  
Pv Systems ◽  
Grid Parity ◽  
Government Incentives ◽  
Cover Ratio

Purpose – The purpose of this paper is to evaluate the expected cost of a large-sized photovoltaic (PV) system (= 1 MW) in reaching grid parity, not taking into account any type of government incentives (now quite uncommon in industrialized countries). A PV system located in Southern Italy will be the subject of this assessment. Design/methodology/approach – The paper presents the case of a 1 MW ground-mounted PV system. The data regarding solar radiation on the surface of the modules and the relative solar diagrams were simulated and reported using PVSYST® 5.21 software. To evaluate the profitability and solvency of the project, a number of factors were taken into consideration: profitability indicators of net present value and internal rate of return, the debt service coverage indicators of debt service cover ratio and loan life cover ratio and their mean annual values (annual debt service cover ratio and annual loan life cover ratio, respectively). A sensitivity analysis with respect to the most critical element (weighted average cost of capital) gave strength to the results. Findings – The achievement of grid parity for 200 kW PV systems is happening globally in areas with higher irradiation, but it clearly refers to residential utilities and is not applicable to large systems. The case study considers a power plant (= 1 MW) to assess the total cost that it would need to have to be economically advantageous. Research limitations/implications – This is an assessment made using a case which, given an average irradiance value in the area and the energy produced, can be used in all countries lying in the temperate zone. For other areas, a scaling coefficient would be needed. Practical implications – The paper is useful for understanding the order of cost, which must catch up to PV technology to make investments in power plants profitable in the absence of government incentives. It is also helpful for those who make government policies so that these may propose possible incentives commensurate with the actual difference between the value of the technology and the value of the investment. The study is also useful for a possible comparison with a system sharing the same characteristics (size, energy production) for off-grid use and customers. Originality/value – The study can be a valuable support for government policies to incentivate PV systems that contribute to a reduction of greenhouse gases and that help contain climate change. The case study represents a real case taken directly from a real project. This case study and its sustainable features have not been previously presented in a scientific journal.

scholarly journals Assessing the Techno-Economic Impact of Derating Factors on Optimally Tilted Grid-Tied Photovoltaic Systems

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1044
Author(s):  
Hasan Masrur ◽  
Keifa Vamba Konneh ◽  
Mikaeel Ahmadi ◽  
Kaisar R. Khan ◽  
Mohammad Lutfi Othman ◽  
...  
Keyword(s):  
Economic Impact ◽  
Geographical Location ◽  
Economic Assessment ◽  
Pv System ◽  
Average Value ◽  
Technical Performance ◽  
Pv Systems ◽  
Pv Panel ◽  
Power Exchange ◽  
Cost Of Energy

Photovoltaic (PV) systems encounter substantial losses throughout their lifespan due to the different derating factors of PV modules. Those factors mainly vary according to the geographical location and PV panel characteristics. However, the available literature does not explicitly concentrate on the technical and economic impact of the derating factors within the PV system. Owing to that necessity, this study performs a comprehensive analysis of various PV loss parameters followed by a techno-economic assessment of derating factors using the average value on a grid-connected and optimally tilted PV system located in Hatiya, Bangladesh. Some criteria linked to the derating factors such as PV degradation and ambient temperature are further explored to analyze their impact on the aforementioned power system. Simulation results show that PV power generation would vary around 12% annually, subject to a 10% variation in the derating factor. Again, a 10% difference in the derating factor changes the net present cost (NPC) by around 3% to 4%. The system provides the best technical performance concerning annual PV production, power trade with the grid, and the renewable fraction at a higher value of the derating factor since it represents a lower impact of the loss parameters. Similarly, the financial performance in terms of the NPC, levelized cost of energy (LCOE), and grid power exchange cost is found to be lower when the derating factor value is higher.

Economic Analysis of Solar PV and Batteries for Common Residential Electricity Rate Structures Using Green Button Data

2013 ◽  
Author(s):  
Mithun Mohan Nagabhairava ◽  
Yin Ma ◽  
Kelly Kissock
Keyword(s):  
Energy Use ◽  
Solar Pv ◽  
Pv System ◽  
Flat Rate ◽  
Pv Systems ◽  
Study Results ◽  
Residential Electricity ◽  
Average Annual Cost ◽  
Utility Rate

Rising electricity prices, falling photovoltaic (PV) system costs and the availability of net metering are encouraging consumers to consider PV systems. However, the variety and complexity of utility rate structures can be a formidable barrier to consumers in making economically informed decisions. This paper describes a methodology to integrate Green Button energy use data from electric utilities, with solar and temperature data to analyze the economics of PV systems, with and without battery storage, under different rate structures. Case study results indicate that the economics of PV systems are nearly identical under PG&E’s time-of-use and inverted-block rate structures, and are more favorable than under flat rate structures with the same average annual cost per kWh. However, simple paybacks remain well short of the typical life of PV systems. The simple payback for the addition of batteries is initially competitive with PV systems, but rises rapidly as battery size is increased.

scholarly journals Roof’s Potential and Suitability for PV Systems Based on LiDAR: A Case Study of Komárno, Slovakia

2020 ◽  
Vol 12 (23) ◽  
pp. 10018
Author(s):  
Marcela Bindzarova Gergelova ◽  
Zofia Kuzevicova ◽  
Slavomir Labant ◽  
Stefan Kuzevic ◽  
Diana Bobikova ◽  
...  
Keyword(s):  
3D Model ◽  
Spatial Information ◽  
Slovak Republic ◽  
Slope Aspect ◽  
Pv System ◽  
Pv Systems ◽  
Subsidy Scheme ◽  
Gis Environment ◽  
The Impact

The case study focuses on evaluating the suitability of roof surfaces in terms of their solar potential based on their geometric parameters. The selected processing methodology detects segments of roof surfaces from the LiDAR base, supplemented with spatial information (orthophoto map, real estate cadastre (REC)—footprint, basic database for the geographic information system (ZBGIS)—classification of buildings—current use). The approach based on spatial analyses takes into account the limit conditions for determining the impact of solar radiation resulting from the roof area, slope, aspect, and hillshade. Considering to the available subsidy scheme for family houses in the conditions of the Slovak Republic, a narrower sample of 35 family houses was selected from the total number of typologically represented buildings (194). A 3D model of the building created by combining REC and LiDAR substrates shows the roof surface without overlap, while another 3D model made of LiDAR substrates alone represents the actual dimension of the roof surface. The results presented for each selected building show good agreement with each other, and their visualizations were obtained using two GIS environment approaches. In the area of family houses, up to 94% of the roof areas of buildings registered in the REC meet the conditions for the installation of a PV system with an output of 2.6/3.3 kW.

Techno-Economic Assessment of PV System for self-consumption Case Study of Malta

2020 ◽  
Author(s):  
Vibhu Jately ◽  
Brian Azzopardi ◽  
Brian Bartolo ◽  
Renata Mikalauskiene ◽  
Somesh Bhattacharya
Keyword(s):  
Economic Assessment ◽  
Pv System

scholarly journals A Techno-Economic Comparative Study of a Grid-Connected Residential Rooftop PV Panel: The Case Study of Nahr El-Bared, Lebanon

2021 ◽  
Vol 11 (2) ◽  
pp. 6956-6964
Author(s):  
H. Camur ◽  
Y. Kassem ◽  
E. Alessi
Keyword(s):  
Crystalline Silicon ◽  
Renewable Energy Sources ◽  
Average Energy ◽  
Electrical Energy ◽  
Energy Output ◽  
Small Scale ◽  
Pv System ◽  
Pv Systems ◽  
Pv Panel

Lebanon suffers from daily electricity shortages. The country has paid much attention to renewable energy sources, particularly solar, to gradually replace conventional energy. Installing a photovoltaic (PV) system becomes increasingly attractive for residential consumers due to the rising electricity tariff rates while it reduces the dependency on domestic power generators. No known study has dealt with the investigation of potential grid-connected rooftop PV systems with various sun-tracking modes and PV technologies in Nahr El-Bared, Lebanon. Consequently, the main objective of the current paper is to investigate the feasibility of a 5kW grid-connected PV system of various technologies (mono-crystalline silicon and poly-crystalline silicon) and sun-tracking modes including fixed tilt and 2-axis systems for rooftop households in Lebanon. The Nahr El-Bared camp was the case study was of the paper. RETScreen Expert software was used to evaluate the techno-economic performance of the proposed systems. The results show that the annual electrical energy from a fixed 5kW PV panel tilted at an optimal angle ranged from 8564.47kWh to 8776.81kWh, while the annual electrical energy from the PV tracking system was within the range of 11511.67-12100.92kWh. This amount of energy output would contribute significantly to reduce the energy shortage in the country. A typical household was selected to establish a load profile and load supply during both grid availability and outage periods. The highest energy consumption that can be covered by the PV systems was recorded during the spring and summer seasons. Also, the average energy production cost ranged from 0.0239 to 0.0243$/kWh for all the proposed systems. It was concluded that a 5kW grid-connected rooftop PV system could be economically justifiable. Finally, this study tried to increase the awareness about utilizing PV sun-tracking systems and the feasibility of small-scale grid-connected rooftop PV systems in the selected regions. The results of this research can help investors in the energy and building sectors.

scholarly journals Monitoring of Photovoltaic Systems: A case study URERMS Adrar

2020 ◽  
Vol 2 (02) ◽  
pp. 96-104
Author(s):  
Ahmed Bouraiou ◽  
Ammar Neçaibia ◽  
Rachid Dabou ◽  
Abderrezzaq Ziane ◽  
Nordine Sahouane ◽  
...  
Keyword(s):  
Data Storage ◽  
Electrical Energy ◽  
Research Unit ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Pv System ◽  
Existing Problems ◽  
Pv Systems ◽  
Pv Generator

The electrical energy generation via the Photovoltaic system is widely utilized in the world especially in the countries where it is characterized by considerable potential of solar energy. PV systems are affected by several factors that can reduce its efficiency such as PV generator aging, failures. Photovoltaic systems monitoring is a important task for guaranteeing the reliability and stability of PV system operation. This paper addresses the monitoring of PV systems in renewable energy research unit in the Saharan region (URERMS) Adrar, through to give an insigth about the methods of measuring, acquisition, data storage of monitored parameters. In addition, the existing problems for insuring the suitable solution.

scholarly journals A GIS-Based Method for Identification of Wide Area Rooftop Suitability for Minimum Size PV Systems Using LiDAR Data and Photogrammetry

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3506 ◽  
Author(s):  
Diane Palmer ◽  
Elena Koumpli ◽  
Ian Cole ◽  
Ralph Gottschalg ◽  
Thomas Betts
Keyword(s):  
Geographical Information Systems ◽  
Current Method ◽  
Assessment Method ◽  
Geographical Information ◽  
Aerial Photographs ◽  
Minimum Size ◽  
Lidar Data ◽  
Pv System ◽  
Ground Truthing ◽  
The Impact

Knowledge of roof geometry and physical features is essential for evaluation of the impact of multiple rooftop solar photovoltaic (PV) system installations on local electricity networks. The paper starts by listing current methods used and stating their strengths and weaknesses. No current method is capable of delivering accurate results with publicly available input data. Hence a different approach is developed, based on slope and aspect using aircraft-based Light Detection and Ranging (LiDAR) data, building footprint data, GIS (Geographical Information Systems) tools, and aerial photographs. It assesses each roof’s suitability for PV deployment. That is, the characteristics of each roof are examined for fitting of at least a minimum size solar power system. In this way the minimum potential solar yield for region or city may be obtained. Accuracy is determined by ground-truthing against a database of 886 household systems. This is the largest validation of a rooftop assessment method to date. The method is flexible with few prior assumptions. It can generate data for various PV scenarios and future analyses.

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