Activities - hibri2
The main activities of the project are:
- Implementation of an electric microgrid powered by a hybrid renewable energy system capable of harnessing indigenous resources (biomass, wind and sun) and meeting the energy demand of the population.
- Awareness and training of the people who will be linked to the project in the operation, maintenance and use of the hybrid plant.
- Ensuring the replicability and sustainability of the system in its social, economic, environmental and geographical aspects.
- Available Biomass (tons/day): It is assumed that the biomass is fed to the gasifier to produce syngas, and the generators will consume this syngas to produce electricity. The existing biomass in Guasasa is mainly composed of yarúa, soplillo and ocuje. It is considered that the availability of this biomass is several times higher than what is required by the plant. Therefore, the biomass necessary to provide the electricity consumption calculated in the corresponding section has been estimated, using the following expression:
- Average Price ($/t): 120 CUP/ton = 5 USD/ton; applied change: 1USD = 24 CUP
- Carbon Content (%): based on the analysis of samples carried out in the CIEMAT-CEDER laboratories in Soria, the value used for the Carbon Content is 48%, and it will be considered the same in both cases.
- Gasification ratio (kg/kg): understood as the ratio between the syngas generated and the biomass consumed in the gasifier. The value obtained is 1.87 kg/kg. The plant technology is from the Indian company Ankur. This type of gasifier accepts various types of firewood, wood chips, chopped bamboo, etc., as long as they have a moisture content of less than 20%.
- Lower Calorific Value of syngas (LCV), in (MJ/kg): According to the manufacturer's data the LCV of the gas is approximately 1050 kcal/Nm3 (1468,89 kcal/kg) or 6.15 MJ/kg.
|PV Generator (40kW)
|Wind Turbine (3kW)
Training is a fundamental component in HIBRI2. One of the main objectives of this project is the technological appropriation of fully renewable and sustainable energy generation processes, the production of electrical energy from solar photovoltaic and wind energy, and electrical and thermal cogeneration through the gasification of biomes, by of the final beneficiary population and of the agents involved in the action, to ensure sustainability over time and the replicability of the experience to other populations.
The scientific-technical training of the local agents involved in the project and specialists and professionals from the energy sector of the Island of Cuba has been carried out through a cycle of scientific-technical workshops: "Fundamentals of Micro-Electrical Networks as Renewable Energy Sources for Isolated Communities”, addressing the different topics covered by the project: hybrid generation plants with renewable energies (photovoltaic, wind, biomass), gasification, design and operation of electrical microgrids, sustainability of energy systems, efficiency and saving of energy, geographic information systems and rural electrification of isolated communities, delivered by experts from CIEMAT and CUBAENERGIA, and specialists and teachers from other organizations, including the BORNAY Company and the University of Las Tunas.
These activities are also intended to be a space for the exchange of experiences and debate. In addition, they seek to know the reality of the current state of the projects that are being developed in this line at the local and regional level, and promote the exchange of experiences between decision-makers and those responsible for energy planning and the promotion of renewable energies, as well as to consolidate existing relationships between the different groups interested in the subject.
These actions also intended to give continuity to the training carried out during the previous phase of the project, Hybridus, strengthening the professional technical work force at local, sectoral and national levels, with the incorporation of innovative solutions for power generation through hybrid systems and with renewable sources. This preparation of specialists aims to contribute to promoting electrification and energy supply projects in isolated communities in Cuba.
First workshop “Technological status of renewable sources. Hybridization of systems for rural electrification. Biomass and wind energy”.
The first workshop was held between February 25 and 28, 2020 in Playa Girón, Cuba, and was attended by experts from CIEMAT, CUBAENERGÍA and the company BORNAY, as well as professionals and technicians from the electricity and Cuban electrification.
This workshop on the “Technological status of renewable sources. Hybridization of systems for rural electrification. Biomass and wind energy”, aimed to place students in the technological state and national and international context of renewable energies, their real potential for available sources and technologies and electrification through the hybridization of systems. Also, the design of hybrid systems based on renewable sources for micro-grids was addressed.
The program had a practical part focused on the design and simulation necessary to determine the technical-economic feasibility of a hybrid project or a Microgrid. This was carried out by using the trial version of the software HOMER, Legacy, Hybrid Optimization of Multiple Energy Resources, which allows the design of renewable energy projects, oriented to hybrid systems. The program facilitates the simulation of systems with multiple generation and storage technologies in a simple way. In addition, a technical visit was made to the community of Guasasa, a location where the electrical microgrid powered by a hybrid system capable of taking advantage of indigenous resources and satisfying the energy demand of the population is to be installed.
Second and third workshop
A second workshop on the on the “Design and implementation of hybrid systems. Solar resource measurement and photovoltaic technology. Geographic Information Systems”, would address the availability and measurement of the solar resource, as well as the current state of photovoltaic solar energy and the design of photovoltaic plants for rural electrification. Mini-hydraulic energy and its potential for energy cogeneration through hybrid systems would be introduced. Geographic Information Systems would be incorporated for energy planning and the integration of renewable energies, with special emphasis on projects linked to the analysis of the regional potential of renewable resources and rural electrification with these sources.
The third workshop on “Sustainability and replicability of hybrid systems for rural electrification. Electrical and thermal cogeneration from biomass gasification”, would address the tools that contribute to the evaluation of the technical-economic feasibility and sustainability of the designed energy systems. Key aspects would be incorporated for the evaluation of the social and environmental impact and the reduction of gender gaps, associated with the expansion of the electricity service. The biomass gasification process for electrical and thermal cogeneration through hybrid systems would be studied. And energy efficiency would be introduced in the rural electrification of isolated communities.
As a consequence of the COVID-19 Pandemic, both workshops, scheduled between 2020 and 2021, had to be postponed until the COVID-19 conditions allowed their implementation. Its realization has finally not been possible because the appropriate conditions have not been reached within the execution time of the project.
Participants in the 1st Workshop, “Technological status of renewable sources. Hybridization of systems for rural electrification. The energy of biomass and wind”, held in Playa Girón between February 25 and 28, 2020
Internal training action among project experts:
In the month of December 2021, a training was carried out by the Bornay Company to train experts participating in the Project, on the installation of the selected equipment.
The training covered:
- Wind turbines: installation, wiring and functionalities.
- Victron Energy converters: products, wiring, functionalities and configuration.
- Pylontech batteries: connection and configuration.
This training was carried out via videoconference and was attended by five experts, three as speakers and two as students.
Screenshot of the virtual training session given by the company Bornay. December 1, 2021
Replicability and sustainability. System's socioeconomic, environmental and geographical aspects
Sustainability and replicability of the system
It consists, on the one hand, in carrying out a sustainability analysis on three fronts: environmental evaluation, socio-economic analysis (based on the costs of investment and operation and maintenance of the project and the Input-Output table of Cuba) and socio-impact assessment -institutional and, on the other, of a replicability study, based on geographic information systems, that takes into account the conditions of other similar sites detected (availability and characteristics of residual biomass, availability of the solar resource and population conditions).
Environmental Sustainability Analysis
The evaluation of environmental sustainability will be carried out through the Life Cycle Analysis (LCA) methodology. LCA is a methodology that evaluates the environmental impacts of a product or service during all stages of its life cycle from the extraction of all resources, through the stages of production, distribution and use and end of life (reuse, recycling, recovery and disposal). Based on technical data and emissions from the different activities that take place in the project life cycle and using databases, the environmental impact will be quantified. Finally, the stages and processes responsible for the greatest environmental burdens will be identified and reduction strategies will be evaluated.
Life cycle Analysis steps
Social and institutional impact Analysis.
A diagnosis of the institutional structure of the project and the impact of its development on the different relevant actors will be made. The proposed task aims to analyze the institutional structure of the project throughout the different phases that make up its life cycle. For this, the different actors involved in each phase will be identified as well as the relationship between them as a result of the implementation of the project. This analysis allows an institutional diagnosis as well as the identification of weaknesses and measures that could strengthen the institutional structure of the project studied.
Stages of the socio-institutional life cycle of the project
Socioeconomic impact Analysis for the Cuban economy
Based on a large-scale technology development scenario, which takes into account the country's resource and energy needs, the impact of such development in terms of job creation and economic stimulation will be analyzed. The input-output analysis is a tool based on the classic model developed by Leontief, which allows knowing in depth an economy by analyzing the interdependence between sectors through the description of the economic flows or transactions that take place in the production process.
Economic flows or transactions in a productive process
Based on data on investment and operation and maintenance costs throughout the different stages of the project life cycle and the Cuban Input-Output table, the impact on employment and the economy in Cuba would be estimated.
Taking into account a future scenario of large-scale penetration, the results will allow estimating the direct, indirect and induced impact on the generation of employment and increase in the production of goods and services in the different economic sectors of the Cuban economy.
Spatial and technological replicability
The development of this activity is carried out with geographic information systems, and takes into account the conditions of other similar sites (according with the results of HYBRIDUS project – Phase I). The study will be extended to other areas and will have the collaboration of the University of Las Tunas for its development. It will also take into consideration the technological characteristics of the micro network as determinants of its replicability.
Spatial and technological replicability