Developing a framework to increase solar photovoltaic microgrid penetration in the tropical region: A case study in Indonesia

2021 ◽  
Vol 47 ◽  
pp. 101311
Author(s):  
Muhammad Saladin Islami ◽  
Tania Urmee ◽  
I. Nyoman Satya Kumara
Keyword(s):  
Tropical Region ◽  
Solar Photovoltaic

Solar Sacrifice: How an Arizona Church Lost Money by Going Solar—and Solutions for When Energy Incentives Fail to Serve the Needs of Nonprofits

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
David Krantz
Keyword(s):  
Energy Consumption ◽  
Oral History ◽  
Policy Design ◽  
Religious Institutions ◽  
Solar Photovoltaic ◽  
The Sun ◽  
Photovoltaic Panels ◽  
Key Stakeholders ◽  
Oral History Interviews

By policy design, consumers are supposed to save money when they invest in solar energy. This paper presents a case study of what happens when a church goes solar and the finances go wrong. Following the installation of solar-photovoltaic panels, the Arizona church—in the Valley of the Sun, among the sunniest places in the country—decreased its energy consumption, but its electric bills went up. Through oral-history interviews of key stakeholders, the author investigates what happened, and what could be done to prevent other religious institutions and nonprofits from experiencing the church’s fate.

Simulations of Solar Power Systems to Provide Electricity to a Model Water Desalination Plant in Floreana Island, Ecuador

2021 ◽  
Author(s):  
Fernando Amoroso ◽  
Rubén Hidalgo-León ◽  
Jaqueline Litardo ◽  
Alejandro Granja ◽  
Jackeline Calderón ◽  
...  
Keyword(s):  
Power Systems ◽  
Water Desalination ◽  
Solar Photovoltaic ◽  
Electrical Load ◽  
Pump System ◽  
Desalination Plant ◽  
Cost Of Energy ◽  
Economic Comparison ◽  
Model Water

Abstract This work shows the techno-economic comparison of the design of two solar photovoltaic systems: 1) on-grid (G-SPVS) and 2) off-grid (SPVS). Both schemes aim to supply electricity to a model water desalination plant located in Floreana Island, Ecuador. The annual load profiles and other operational details of the case study were previously obtained. For this research, a period of 15-years was analyzed. During this time, the maximum power of water pump system remained constant and represented the highest percentage of the electrical load, which changed each year influenced by the drinking water requirements of the population. Results from the HOMER PRO simulations showed that the SPVS produced higher surpluses of electricity. In contrast, the G-SPVS exhibited lower net present cost (NPC) and cost of energy (COE).

scholarly journals A Numerical Study on Mitigation Strategies of Urban Heat Islands in a Tropical Megacity: A Case Study in Kaohsiung City, Taiwan

2020 ◽  
Vol 12 (10) ◽  
pp. 3952 ◽  
Author(s):  
Jou-Man Huang ◽  
Liang-Chun Chen
Keyword(s):  
Thermal Environment ◽  
Numerical Study ◽  
Mitigation Strategies ◽  
Comfort Level ◽  
Tropical Region ◽  
Permeable Pavement ◽  
Coverage Ratio ◽  
Urban Heat ◽  
Cooling Effects

In recent years, with the rapid increase in global warming and urbanization, urban heat island effects (UHI) have become an important environmental issue. Taiwan is no exception, with previous studies demonstrating serious UHIs in megacities. Although existing UHI research has utilized computer simulations to analyze improvement scenarios, there are few cooling strategy studies in actual blocks of Taiwan. Therefore, this study selected a block of a megacity in a tropical region of Taiwan as a case study by ENVI-met. Five improvement strategies were tested and compared to the current situation (B0): (1) Case C1 changed to permeable pavement, (2) Case C2 increased the green coverage ratio (GCR) of the street to 60%, (3) Case C3 changed to permeable pavement and increased the GCR in the street to 60%, (4) Case C4 changed to permeable pavement, increased the GCR in the street to 60%, and increased the GCR in the parks to 80%, and (5) Case C5 changed to permeable pavement, increased GCR in the street to 60% and parks to 80%, and set the GCR on the roof of public buildings to 100%. The results showed that the average temperature of the current thermal environment is 36.0 °C, with the comfort level described as very hot. Among the five improvement schemes, C5 had the greatest effect, cooling the area by an average of 2.00 °C. Further analysis of the relationship between the different GCRs of streets (SGCR) and the cooling effects revealed that for every 10% increase in the SGCR, the temperature of the pedestrian layer was reduced by 0.15 °C.

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