ISSN:1390-9266 e-ISSN:1390-9134 LAJC 2025
51
DOI:
LATIN-AMERICAN JOURNAL OF COMPUTING (LAJC), Vol XII, Issue 1, January 2025
10.5281/zenodo.14449618
LATIN-AMERICAN JOURNAL OF COMPUTING (LAJC), Vol XII, Issue 1, January 2025
A web-based tool for the sizing of grid-connected
photovoltaic (PV) systems in Ecuador
Ángel Ordóñez
Facultad de la Energía
Universidad Nacional de Loja
Loja, Ecuador
angel.j.ordonez@unl.edu.ec
ORCID: 0000-0003-3982-9759
Andrea Enriquez
Facultad de la Energía
Universidad Nacional de Loja
Loja, Ecuador
andrea.enriquez@unl.edu.ec
ORCID: 0009-0007-9056-3913
Juan Carlos Solano
Facultad de la Energía
Universidad Nacional de Loja
Loja, Ecuador
juan.solano@unl.edu.ec
ORCID: 0000-0002-8103-5429
Abstract—The transition to cleaner and more sustainable energy
sources involves the use of solar photovoltaic energy. This energy
source has the potential to reduce greenhouse gas emissions and
dependence on fossil fuels. The research project focused on the
development of a web-based tool for sizing photovoltaic systems in
Ecuador. This tool considers several factors, including technical,
theoretical, economic and environmental aspects. The tool allows
sizing based on electricity consumption and power requirements.
Furthermore, the tool provides technical information, CO
2
reduction
data and economic perspectives based on the operation of the
electricity system in Ecuador. The comparative validation with
installed systems and similar web tools demonstrated the reliability
and robustness of the developed tool.
Keywords— photovoltaic systems, self-consumption, renewable
energy, photovoltaic production
I. INTRODUCTION
Solar photovoltaics is currently the fastest growing
generation technology in terms of capacity expansion and has
become one of the main sources of power generation [1]. In
Latin America, the increase in electricity demand has
highlighted the importance of solar PV as a crucial element to
foster economic development and social welfare [2]. In
Ecuador, despite the remarkable growth of renewable energies
in recent years, a high dependence on fossil fuels persists,
especially in sectors such as transport and industry [3]. The
expansion of renewable energy sources, such as solar
photovoltaics, has emerged as a pivotal strategy to mitigate the
high costs and emissions associated with conventional energy
sources, thereby facilitating the transition towards a more
sustainable energy system [4].
Considering the aforementioned circumstances, there is a
pressing need for the development of specialized analytical
and dimensional tools for the analysis and assessment of
photovoltaic systems, with particular emphasis on self-
consumption modalities. In this context, we propose the
development of a web tool to assess the technical and
economic feasibility of implementing grid-connected
photovoltaic systems in Ecuador. The objective is to provide
significant support in decision-making in this area.
A. Conventional and renewable energies
Renewable energy is obtained from natural sources that
are virtually inexhaustible and plays a crucial role in meeting
global energy demand while preserving the environment [5].
Renewable energies, including solar, wind, water and
biomass, do not generate greenhouse gas emissions during
their operation, making them a sustainable and
environmentally friendly alternative. These energies are
essential for the transition towards a cleaner and more
sustainable energy system. In this context, grid-connected
photovoltaic systems (GRPS) for self-consumption represent
an important innovation in the use of renewable sources.
SFCRs generate electricity that can be fed into the grid. Their
main components include photovoltaic modules, an inverter
for grid connection, a grid exchange device and a bi-
directional energy meter. The grid acts as an accumulator with
indefinite capacity, and the user connected to this grid
represents the load. The security of SFCRs is enhanced
compared to standalone systems, as they can continue to
operate in the event of a battery system failure, provided that
a connection to the grid is available [6]. In the PV distribution
mechanism, some countries have opted to give benefits to the
system owner for the energy fed into the grid [7].
B. The impact of solar radiation on the performance of
solar panels in Ecuador
Ecuador benefits from considerable solar radiation,
reaching a Global Horizontal Irradiation of 2,264 kWh/m
2
(kilowatt hour per square meter) in the highland [8]. This
makes it one of the countries with high solar energy potential.
However, there are variations in radiation levels, with levels
ranging between 30 % and 40 % across different regions due
to atmospheric conditions [9]. The country has a solar energy
potential that covers approximately 9.3 % of its national
territory, with around 805 square kilometers suitable for
photovoltaic systems. This translates to a gross theoretical
potential of 35.7 GWp and an annual production of
approximately 61.5 GWh [10].
In terms of energy policy, Ecuador is promoting the
adoption of photovoltaic systems due to their advantages, in
line with the Electrification Master Plan 2019-2027. In 2022,
approximately 61.21 % of the total nominal capacity of
electricity generation will come from renewable sources, with
solar PV contributing a total of 27.76 MW, representing 0.53
% of the total energy supply generated by PV systems. These
systems have been installed in several Ecuadorian provinces
such as Cotopaxi, El Oro, Galapagos, Guayas, Imbabura,
Loja, Manabí, Morona Santiago, Pastaza and Pichincha [11].