Optimal sizing of stand-alone photovoltaic systems in residential buildings

Okoye, Chiemeka Onyeka; Solyalı, Oğuz

doi:10.1016/j.energy.2017.03.032

Cited by 95 publications

(40 citation statements)

References 46 publications

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“…If the initial cost is $38,027 USD and the NPV of the annual cost is $5321 USD for 20 years with 10% of interest, the $/kWh price is 0.187. The authors in [12] consider that SAPVSs are an opportunity to generate electricity for developing countries, however, this analysis suggests that SAPVSs is far from the economic possibilities of developing countries due to the high investment costs. The model has been validated using different arrays on RETScreen, where changes were made on the characteristics of solar panels, inverters and batteries.…”

Section: Resultsmentioning

confidence: 99%

“…The schematic system with its components is shown in Figure 3. The methodology to obtain the optimum angle is proposed in [43] and used in [12].…”

Section: Stand-alone Pv Modelmentioning

confidence: 99%

“…There are currently several works on optimal sizing for SAPVSs [12,[16][17][18]. Different sizing methods have been proposed in previous research works to obtain an optimum size of stand-alone PV systems and can be broadly classified as follows: numerical methods [19][20][21][22]; analytical methods [23][24][25][26] and intuitive methods [27,28].…”

Section: Introductionmentioning

confidence: 99%

“…However, SAPVSs in urban areas are uncommon, as the stand-alone PV design assumes that the system is not embedded in a building, unlike the building integrated design in [12]. According to [13], SAPVSs represent a cost-effective and eco-friendly alternative to conventional high cost diesel-fired generators, particularly in developing countries where most of the population lives in rural and isolated areas.…”

Section: Introductionmentioning

confidence: 99%

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Stand-Alone Photovoltaic System Assessment in Warmer Urban Areas in Mexico

et al. 2018

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Abstract:The aim of this study is to examine the possibility of using a stand-alone photovoltaic system (SAPVS) for electricity generation in urban areas in Southern Mexico. In Mexico, an urban area is defined as an area where more than 2500 inhabitants live. Due to constant migration from the countryside to the cities, the number of inhabitants of urban localities has been increasing. Global horizontal irradiation (GHI) data were recorded every 10 min during 2014-2016 in Coatzacoalcos in the state of Veracruz located on 18 • 08 09 N and 94 • 27 48 W. In this study, batteries represented 77% of the total cost, 12 PV panels of 310 W could export 5.41 MWh to the grid, and an inverter with an integrated controller and charger was selected, which decreased the initial cost. The city of Coatzacoalcos was chosen because the average annual temperature is 28 • , with an average relative humidity of 75% and an average irradiance of 5.3 kWh/m 2 /day. An emission factor 0.505 tCO 2 /MWh of greenhouse gases (GHG) were obtained, based on the power system, the reduction of net annual GHG would be 11 tCO 2 and a financial revenue of 36.951 × 10 3 $/tCO 2 would be obtained. Financial parameters such as a 36.3% Internal Rate Return (IRR) and 3.4 years payback show the financial viability of this investment. SAPVSs in urban areas in Mexico could be a benefit as long as housing has a high consumption of electricity.

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Section: Resultsmentioning

confidence: 99%

“…The schematic system with its components is shown in Figure 3. The methodology to obtain the optimum angle is proposed in [43] and used in [12].…”

Section: Stand-alone Pv Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stand-Alone Photovoltaic System Assessment in Warmer Urban Areas in Mexico

et al. 2018

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“…HOMER, HYBRID2, HOGA, and PHOTOV-III are the most widely used commercial software [8]. In SAPV designs, meteorological data and load demand values can be used by considering daily or monthly averages [1,9]. In this section, the path that is followed in sizing and determining the cost of all the equipment that makes up the designed SAPV system is explained.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Turkey’s Geographical Regions in terms of Stand-Alone PV System Design and Cost Parameters

Onat

2017

International Journal of Photoenergy

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Stand-alone photovoltaic (SAPV) systems are widely used in rural areas where there is no national grid or as a precaution against power outages. In this study, technical and economic analysis of a SAPV system was carried out using meteorological data for 75 province centers in seven geographical regions of Turkey. Obtained results for each province center were separated by geographical area. The averages of the centers for each region are taken as output. A calculation algorithm based on MsExcel has been established for these operations. The analyses made with the developed algorithm are repeated for five different scenarios that they cover periods of time when a constant strong load is active for all seasons (winter, spring, summer, and autumn) and all year round. The developed algorithm calculates the life-cycle cost, the unit energy cost, the electrical capacity utilization rate, the amount of generated/excess energy per month, the initial investment/replacement, and operating and maintenance (O&M) costs of each element. As a result, geographical regions of Turkey are compared in terms of these outputs graphically. Further investigations may include the sale of excess energy generated, small-scale PV system cost factors parallel to the grid, and the effects of government incentives.

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