scholarly journals How an Integration of Home Energy Management and Battery System Affects the Economic Benefits of Residential PV System Owners in Thailand

2021 ◽  
Vol 13 (5) ◽  
pp. 2681
Author(s):  
Methee Srikranjanapert ◽  
Siripha Junlakarn ◽  
Naebboon Hoonchareon
Keyword(s):  
Energy Management ◽  
Electricity Consumption ◽  
Economic Benefits ◽  
Critical Parameters ◽  
Solar Pv ◽  
Pv System ◽  
Financial Feasibility ◽  
Home Energy Management ◽  
Solar Pv System ◽  
The Government

Although home energy management systems (HEMS) and batteries are part of the Thailand Smart Grid Master Plan, the financial feasibility and attractiveness of installing residential solar rooftop photovoltaic (PV) systems with integration of the HEMS and battery have never been investigated. This study develops three scenarios comprising of an installation of only solar PV system, solar PV system with the HEMS, and solar PV system with integration of the HEMS and battery under the current net billing solar program for households and analyzes their financial feasibility and attractiveness by using economic measures. In addition, sensitivity analysis is performed to analyze the impacts of critical parameters on the feasibility of these three scenarios. Findings indicate that the installation of a solar rooftop system with the HEMS provides the highest customer economics. Although the implementation of HEMs leads to an increase in energy exports, benefits from bill savings of lower electricity consumption by using the HEM are relatively high compared to the loss from energy exports. Therefore, in the short term, the government should promote the integration of HEMS with a PV system; however, the installation of a PV system with HEMS and battery in the residential sector should be promoted when battery cost decreases.

Modelling the time duration until the adoption of residential rooftop solar photovoltaic (PV) systems

2021 ◽  
pp. 1-32
Author(s):  
Mohammad Hamed ◽  
Adnan AlMasri ◽  
Zakariya Dalala ◽  
Raed Alsaleh
Keyword(s):  
Mixed Logit ◽  
Significant Proportion ◽  
Economic Benefits ◽  
Solar Pv ◽  
Pv System ◽  
Time Duration ◽  
Pv Systems ◽  
Intention To Adopt ◽  
Solar Pv System ◽  
Rooftop Solar

Abstract This paper addresses two key decisions by households to adopt rooftop solar PV systems and the length of time until the adoption. It is hypothesized that these decisions are controlled by different mechanisms and should be modelled independently. This is the first attempt to formally estimate the length of time until the adoption to the authors' knowledge. Two models are presented in this paper. The first is a mixed logit to model the respondents' intention to adopt a solar PV system, and the second is a random parameters ordered probit to estimate the length of time until the adoption. Estimation results show that the number of electrical appliances, the households' interest to harness economic benefits, and the type and characteristics of the dwelling motivate households to select a shorter duration until the adoption. Results also show that the majority (77.80%) of respondents with EVs are highly likely to adopt a rooftop system and select a shorter time duration until adoption. In addition, a significant proportion (83.23%) of respondents with high monthly electricity bills are more likely to adopt a rooftop PV system and select a shorter time duration. Results show that the average monthly electricity bill for households with a PV system has decreased by 74.04%. Reducing monthly electricity bills is a key instigator for adopting a rooftop PV system. Our results confirm the hypothesis that even if there is an intent to adopt a rooftop solar PV system, the length of time until the adoption is controlled by another mechanism.

scholarly journals Design and Economic Analysis of a Grid-connected Rooftop Solar PV System for Typical Home Applications in Oman

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Razzaqul Ahshan ◽  
A. M. Al-Hanshi ◽  
M. A. Al-Naabi ◽  
H. A. Al-Hashmi ◽  
A. H. Al-Badi
Keyword(s):  
Net Present Value ◽  
Systems Design ◽  
Economic Feasibility ◽  
Critical Parameters ◽  
Effect Of Temperature ◽  
Design System ◽  
Solar Pv ◽  
Pv System ◽  
Solar Pv System ◽  
Rooftop Solar

This paper presents a techno-economic investigation of an integrated rooftop solar PV system for typical home applications in Oman that reduces the power consumption from the grid and export excess PV generated power back to the gird. Since renewable energy systems design technically depends on the site, this study selects a typical two-story villa in Al-Hamra, Oman as the site. Temperature is one of the critical parameters in this design as it varies widely over the day and has a considerable variation from one season to another in Oman. With the effect of temperature variation, the PV system has designed using system models for the required load of the home. The available rooftop space and the grid-connection availability are two main design constraints have realized in this study. This research also evaluates the economic feasibility of the design system considering the energy export tariff as per the Bulk Supply Tariff (BST) scheme in Oman. The design outcome reveals that the designed PV system can supply the load energy requirement in a year. In addition, the rooftop solar PV system can sell surplus energy back to the grid that generates additional revenue for the owner of the system. The economic performance indices such as payback period, internal rate of return, net present value, and profitability index ensure the financial feasibility of the designed rooftop solar PV system for the selected home. 

scholarly journals Management of a Solar-PV System with Energy Storage

2021 ◽  
Vol 19 (3) ◽  
pp. 233-245
Author(s):  
Shital Thorat ◽  
Vaiju N Kalkhambkar
Keyword(s):  
Energy Management ◽  
Reactive Power ◽  
Frequency Control ◽  
Harmonic Distortion ◽  
Solar Pv ◽  
Pv System ◽  
Static Synchronous Compensator ◽  
Pv Inverter ◽  
Solar Pv System ◽  
Remaining Capacity

A solar-PV system is generally connected to distributed generation (DG) by the utility grid. The solar inverter retains some capacity after active power generation. Reactive power compensation can be achieved by utilizing the remaining capacity of the solar-PV inverter. This paper introduces an energy management system (EMS) for real and reactive power management. The proposed EMS includes two modes: PV-STATCOM and islanding. In PV-STATCOM mode, the PI control is used whereas for the islanding mode, voltage frequency control is employed. This paper proposes the energy management of reactive power by utilizing the solar photovoltaic (PV) inverter as a static synchronous compensator (PV-STATCOM). Therefore, no other additional flexible AC transmission system controllers or series/shunt capacitors are required. During the islanding mode, the storage provides continuous supply to the load. The system is simulated using single-phase and three-phase modes with the hardware results also revealed. The proposed scheme provides a significant improvement in power factor while reducing the total harmonic distortion.  

Optimization Techniques for Improving the Performance of Solar Photovoltaic System in Conjunction with Health Informatics and the Hospital Energy Management System

2021 ◽  
Vol 11 (12) ◽  
pp. 3016-3023
Author(s):  
S. Elam Cheren ◽  
L. Ashok Kumar
Keyword(s):  
Power Generation ◽  
Energy Management ◽  
Health Informatics ◽  
Management System ◽  
Energy Savings ◽  
Energy Management System ◽  
Solar Pv ◽  
Pv System ◽  
Solar Pv System

Energy savings, clean energy, savings in utility and energy governance tools are buzzwords in the healthcare industry. Healthcare sectors become largest consumer of energy in the modern world. Based on data of American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), a moderate hospital consume 2.5 times higher energy than commercial buildings. As a result, increased worries about energy costs and environmental issues, as well as the anticipation of rising energy prices in the future and the need to enhance the dependability of healthcare facilities, have led to a focus on in-house power generation systems and the importance of energy management in hospitals and their health care facilities. Solar power systems that are clean and ecologically friendly have grown in popularity as distributed power generation (DPG) systems in recent years. In this work, a Grid-tied Solar PV system incorporated with Battery energy storage technology is considered in conjunction with health informatics and the hospital Energy Management System reduces energy consumption cost and improves the reliability of the power supply to run all clinical equipment available in the hospital’s Intensive Care Unit (ICU) and other premises. In this context, the Energy management controller utilised in the hospital Energy Management System will effectively use the electricity supplied by the Solar PV system while minimising grid demand and stabilising the voltage in the DC bus, which must be inverted into AC using an inverter to feed clinical loads. Furthermore the maximum power point tracking method is adopted, which enhances the quality of DC voltage generated by solar PV panels and feed to the DC bus. Sliding mode controller (SMC) is adopted in the inverter side and the quality of the inverted voltage is optimized using artificial bee colony (ABC) method. The proposed solar PV system in conjunction with health informatics and the hospital Energy Management System is developed and simulated in the MATLAB Simulink. The response of the suggested SMC and ABC techniques are compared and their outcomes are shown to confirm the performance of hospital energy management system.

scholarly journals Design and simulation of a rooftop PV System in Taylor’s University Lakeside Campus

2021 ◽  
Vol 2120 (1) ◽  
pp. 012035
Author(s):  
Y Krishna ◽  
M F Fauzan ◽  
N B Muhammad Nurhisham Gan
Keyword(s):  
High Reliability ◽  
Sustainable Energy ◽  
Electricity Consumption ◽  
Payback Period ◽  
Alternative Form ◽  
Maintenance Cost ◽  
Solar Pv ◽  
Pv System ◽  
Reduce Electricity Consumption ◽  
Solar Pv System

Abstract Solar photovoltaic (PV) system is proven to be a future-proof type of power generation for growing economies. There are almost zero pollutants released, low maintenance cost with high reliability as the lifespan of a solar PV stretches up to 30 years, a well-sought alternative form of sustainable energy. Moreover, the electricity consumption in Taylor’s University (TU), Malaysia is very high, as a consequence, a huge fraction of the fund is used to settle an RM450,000 electricity bill on average annually. In this paper, the study focused on how to reduce electricity consumption in TU by proposing a design of a comprehensive solar PV system. PVSYST and Sketchup software are used to design and analyze the PV system. In the present study, a Grid-Connected Photovoltaic (GCPV) mounted on the available roof space of TU is investigated. Also, a detailed economic analysis that includes the payback period and annual savings achieved through the proposed PV installation is analyzed. Annual savings of RM 267,621.00 can be made upon utilizing the proposed idea. Besides that, TU would be able to recover the initial investment cost in approximately 8 years of payback period, proving that the implementation of a 433kWp of solar PV unit is a smart option to address the sustainable energy goals.

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