Browsing by Autor "Edwin Garabitos Lara"

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An Assessment of Urban Wind Potential and the Stakeholders Involved in Energy Decision-Making
(2023) Alexander Vallejo Díaz; Idalberto Herrera Moya; Edwin Garabitos Lara; Cándida K. Casilla Victorino
Urban wind energy has emerged as an attractive source of distributed generation in cities to achieve sustainable development goals. The advance in technologies for the use of urban wind energy has turned this source into an attractive alternative for the decarbonization of cities and the energy transition. The objectives of this work are (1) to identify the potential of wind energy through numerical weather prediction (NWP) data tools and (2) to identify the roles and responsibilities of the stakeholders involved in the decision-making process. A methodology was developed in two phases and applied to a case study in the Dominican Republic. The first phase consisted of estimating the wind energy potential for the 32 provinces at a height of 10 m using open-access geographic reference systems tools provided by NASA. In the second phase, 28 stakeholders were identified through snowball sampling. The Responsible, Accountable, Consult, and Informed (RACI) matrix tool was applied to identify the roles of the 28 institutions addressed at the country level as relevant in the decision-making process for the energy sector. The annual average wind speed and energy potential for each province were determined. It was found 24 provinces have poor potential, below &amp;lt;4.5 m/s. In the northwest and east is where there is the greatest potential, between 4.83 - 6.63 m/s. The population density was established and was observed that the provinces with greater potential are less densely populated. Through 59 interviews 28 institutions were identified and evaluated due to their relevance in decision-making for the implementation of energy projects. The MEM has strongly categorized as “A”, electricity distribution companies as “R”, energy associations and universities as “C”, and educational and justice institutions as “I”.
Dataset of in-situ meteorological measurements for urban wind energy assessment in the southern region of the Dominican Republic
(Elsevier BV, 2026) Alexander Vallejo Díaz; Idalberto Herrera-Moya; Edwin Garabitos Lara; Héctor David Morbán-Ramírez; Adermim Jhoswar Severino-Simeón; Anders Malmquist
Sizing of photovoltaic systems for self-consumption without surpluses through on-site measurements: Case study of the Dominican Republic
(Elsevier BV, 2024) Edwin Garabitos Lara; Alexander Vallejo Díaz
The photovoltaic systems with surpluses have contributed significantly to distributed generation in the last decade, however, its growth is affected by new regulations in several countries. With the aim of promoting self-consumption, this research evaluates the profitability of self-consumption without surpluses, considering self-consumption without an anti-dump system. The sizing methodology includes the use of geographic information systems tools, on-site measurements with an electrical network analyzer and irradiance meter, contributing with real data of the solar resource. A techno-economic model is applied to a case study in the residential sector of the Dominican Republic, with an average demand of 394 kWh/month, from which results are inferred for other levels of consumption. The results show that self-consumption without anti-dump is profitable, with payback time (PBT) of 4.57 years, internal rate of return (IRR) of 23.4 % and self-sufficiency rate (SSR) of 5.0 %. The deployment of this type of self-consumption is not viable for customers with consumption <252 kWh/month. In the case study with the anti-dump system the investment is profitable, with PBT of 4.84 years, IRR of 21.7 % and SSR of 20.8 %. These results indicate the profitability conditions for two types of self-consumption without surpluses, presenting an alternative to self-consumption with surpluses.