GHG Emission and Cost Performance of Life Cycle Energy on Agricultural Land Used for Photovoltaic Power Plant

The research aims to analyze land use from agricultural land for photovoltaic power plant construction and electricity generation. Geographic information system technology was used to analyze and decide the suitability of the land for a photovoltaic power plant. GHG assessment and life cycle cost were applied in this study which covered 4 processes: land preparation, logistics, construction and system installment, and electrical generation. The research found that the maps showed the area to be moderately abundant clay, outside the irrigated area, the average rainfall was 1,100 mm./year and agriculture is only possible four months per year. The average solar irradiance was 17.6 W/m2.d for this area which is suitable for building a photovoltaic power plant. CO2 emissions for land preparation, transportation, construction and electrical generation were 0.148tCO2eq/kWh, 0.196 tCO2eq/kWh, 0.418 tCO2eq/kWh and 6.932tCO2eq/kWh, respectively and the net CO2 emission was -0.549 kgCO2eq/kWh. Life cycle cost for 25years is 169.79million baht and the cost of energy is 4.12 baht/kWh. The empirical results show that land use assessment of agriculture for the photovoltaic power plant was appropriate and worth wile without affecting the environment and economy. Keywords: Greenhouse gas, geographic information system, land use, life cycle cost, photovoltaic power plant. JEL Classifications: C8, G0, M2 DOI: https://doi.org/10.32479/ijeep.739

Forecasting of Biodiesel Prices in Thailand using Time Series Decomposition Method for Long Term from 2017 to 2036

Currently, the Thailand government is promoting biofuel, especially the producer of biodiesel. Starting from 2015, the Ministry of Energy of Thailand has determined that the palm oil remaining from domestic consumption is 14 million liters per day in 2036. Forecasting biodiesel prices are most important since biodiesel price volatility affects renewable energy consumption in the future. This paper presents the biodiesel prices in Thailand with the time series decomposition method. The source of time series data comes from the Energy Policy and Planning Office, Ministry of Energy of Thailand, monthly average retail price of regular-grade biodiesel, during 2007 – 2016, 120 months in total. This study aims to use forecasting methods to deter biodiesel prices in Thailand over the next 20 years, from 2017 to 2036. This solution starts with decomposing data into a trend, a cycle, seasonal, and any irregular components and then calculates biodiesel prices with a multiplicative model. The model shows a continuous decreasing trend of biodiesel prices from around 27.50 to 25.84 THB/liter in 2017 to 22.36 THB/liter in 2036. Moreover, the forecasting method has the least mean absolute present error (MAPE) at 0.24651.Keywords: Biodiesel, Forecasting, Time-Series MethodJEL Classifications: C01, C10, E17, O21DOI: https://doi.org/10.32479/ijeep.10666</p

An Assessment of the Economic Viability of Delivering Solar PV Rooftop as a Service to Strengthen Business Investment in the Residential and Commercial Sectors

The creation of significant power from PV technology has resulted from the growth of the solar PV business and industry and the lowering of PV costs. The electricity market is open broader for PV and other involved device technology. The goal of cumulative capacity drives Thailand's solar PV investment compass. The learning curve projection shows that the prediction's learning curve reliability can provide a clearer view for PV investment and policymakers. This paper shows the creation of the opportunity for the solar PV rooftop as a service (RaaS) business model, designed for four customers: residential and commercial, with small, medium, and large scales depending on their electricity consumption. The result reveals that if no grid is allowed, the medium- and large-scale are more likely to be feasible as they show grid parity. With the PV cost reduction trend, all the customers are economically viable in the grid sale allowed. Besides that, the electricity tariff rate from the grid also significantly impacts the PV rooftop investment and customer decision-making

The Barriers Analysis for Waste-to-Energy Project Development in Thailand: Using an Interpretive Structural Modeling Approach

Waste-to-energy (WtE) is national policy. From this view, WtE technology has been promoted. Many WtE projects in Thailand were unsuccessful due to several problems. This research aimed to analyze the key barriers impacting the WtE project development in Thailand. The Interpretive Structural Model (ISM) and Cross-Impact Matrix Multiplication Applied to Classification (MICMAC) analysis tool have been used to evaluate the barriers that significantly in the development of WtE projects. In this study, WtE projects focused on electricity power generation in order to correspond to the Alternative Energy Development Plan (AEDP) target and power purchase agreement constrain of the government. The barriers were obtained from six sections consisting of social issues, environment, national policy, technology, economy, and project management. From six sections, there are 20 barriers that were identified. The ISM and MICMAC analysis showed that the key barriers impacting the WtE projects development were insufficient amount of waste and poor waste management planning. These two barriers correspond with many studies in Thailand and other countries. The project developers or investors must take these two barriers and other barriers with less impact mentioned in this study into account before developing the WtE projects in Thailand

Effect of the Diffuse Radiation Reflection from Exterior wall on Shading Device Integrated Photovoltaic Case of Thailand building

AbstractPresently, a green building concept is the design trend for new building. The Shading Device Integrated Photovoltaic system (SIPV) is one option can be applied for building energy conservation. Although, SIPV has some weakness when a building creates the shadow on SIPV by the sun ray projection. Nevertheless, SIPV operation has many benefits that are reduction and compensation the cooling load of air condition system that it follow from building code as OTTV indicator. Furthermore, Design can avoid a high performance glass window that is an expensive material. Therefore, the aim of this paper is to evaluate the annual energy yield per square meter of SIPV of the different slopes and directions of SIPV installation and different types of PV module as used for SIPV was compared. The evaluated location refers to building in Bangkok as 14o North latitude. The results shown that SIPV produces maximum energy yield when the slope nearly 120o on South, Southeast or Southwest direction, which is installed on the exterior wall that has the diffuse reflectance value approximately 30% like a rough semi-glossy surface. Amorphus Silicon and Polycrystalline Silicon technology produces the annual energy yield is 84 and 149 kWh/m2-Year respectively. Which replaces absolutely the cooling load from the glass area is 0.85 and 1.51 m2 respectively

Considering a paradigm shift in rural electrification: biodiesel as renewable energy electrification alternative

This research was conducted to investigate using biodiesel for rural electrification in a rural community in Ghana. A model electrification system was set up to run on biodiesel to evaluate the technical parameters of the power system and compare it with fossil diesel system. The fuel properties for both JCME and PKME and their blends in this study were comparable to commercial diesel and within the limit set by ASTM/EN for biodiesel standards. It was realised that the difference in consumption and engine performance characteristics of biodiesel was not significant at 95% confidence level from fossil diesel. The difference of between 7 and 15% of all technical parameters evaluated gave support that biodiesel could be used instead of fossil diesel for rural electrification in Ghana