A HYBRID SOLAR-WIND ENERGY GENERATION APPROACH FOR SRI LANKA

The escalation of global energy demand has enhanced the interest on renewable energy technologies worldwide. The reliance of a single energy source has become problematic, and hybrid renewable energy technology has been identified as a feasible solution. Producing energy to limitless increasing demand is a challenging issue faced by Sri Lanka nowadays. Although, there are some studies carried out for renewable energy systems, solar-wind based hybrid renewable systems is an understudied area in Sri Lankan context. Hence, this paper aims to explore the applicability of hybrid solar-wind renewable energy generation approach for Sri Lanka. The study follows a qualitative approach with semi structured interviews from eight industrial experts, and manual content analysis technique was used for data analysis. The paper discussed the current installation practices of solar and wind technologies, applicability of hybrid solar and wind renewable energy systems and national level contribution for hybrid systems. Finally, a validated model was proposed to implement hybrid renewable energy generation systems for Sri Lanka.

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An Overview on Functional Integration of Hybrid Renewable Energy Systems in Multi-Energy Buildings

Energies ◽

10.3390/en14041078 ◽

2021 ◽

Vol 14 (4) ◽

pp. 1078

Author(s):

Laura Canale ◽

Anna Rita Di Fazio ◽

Mario Russo ◽

Andrea Frattolillo ◽

Marco Dell’Isola

Keyword(s):

Renewable Energy ◽

Real Time ◽

Energy Demand ◽

Residential Buildings ◽

Renewable Energy Sources ◽

Functional Integration ◽

Energy Systems ◽

Renewable Energy Systems ◽

Hybrid Renewable Energy Systems ◽

Hybrid Renewable Energy

Buildings are responsible for over 30% of global final energy consumption and nearly 40% of total CO2 emissions. Thus, rapid penetration of renewable energy technologies (RETs) in this sector is required. Integration of renewable energy sources (RESs) into residential buildings should not only guarantee an overall neutral energy balance over long term horizon (nZEB concept), but also provide a higher flexibility, a real-time monitoring and a real time interaction with end-users (smart-building concept). Thus, increasing interest is being given to the concepts of Hybrid Renewable Energy Systems (HRES) and Multi-Energy Buildings, in which several renewable and nonrenewable energy systems, the energy networks and the energy demand optimally interact with each other at various levels, exploring all possible interactions between systems and vectors (electricity, heat, cooling, fuels, transport) without them being treated separately. In this context, the present paper gives an overview of functional integration of HRES in Multi-Energy Buildings evidencing the numerous problems and potentialities related to the application of HRESs in the residential building sector. Building-integrated HRESs with at least two RESs (i.e., wind–solar, solar–geothermal and solar–biomass) are considered. The most applied HRES solutions in the residential sector are presented, and integration of HRES with thermal and electrical loads in residential buildings connected to external multiple energy grids is investigated. Attention is focused on the potentialities that functional integration can offer in terms of flexibility services to the energy grids. New holistic approaches to the management problems and more complex architectures for the optimal control are described.

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Optimisation of hybrid renewable energy systems on islands: A review

Island Studies Journal ◽

10.24043/isj.167 ◽

2021 ◽

Author(s):

James Morales Lassalle ◽

Dante Figueroa Martínez ◽

Luis Vergara Fernández

Keyword(s):

Renewable Energy ◽

Energy Demand ◽

Meteorological Data ◽

Energy Systems ◽

Energy System ◽

Fundamental Aspect ◽

Power Relationship ◽

Renewable Energy Systems ◽

Hybrid Renewable Energy Systems ◽

Hybrid Renewable Energy

Access to energy services is recognised as a fundamental aspect of economic and social development. This is particularly important for isolated areas, where electrical supply is not guaranteed. Because of their inherent geographic characteristics, islands are prominent cases of isolated areas that must import and burn fossil fuels, with environmental and economic consequences. In this context, Hybrid Renewable Energy Systems (HRES) emerge as an alternative to traditional generation to reduce energy costs and environmental issues. This study aims to demonstrate the feasibility of implementing HRES on islands, based on energy optimisation. We present an extensive review of HRES optimisations across 73 island cases, collecting information about energy demand, energy system sizes, and optimisation methodologies. The most commonly proposed HRES components are identified, and a significant power relationship is found between population and annual energy demand on islands. Further, we identify islands with higher-than-expected and lower-than-expected consumption and the underlying causes. The main limitations of the reviewed studies are discussed, particularly with regards to availability and quality of hourly demand data and/or meteorological data required for renewable energy assessments. Several approaches to fill these gaps in information are reviewed here, concluding with a discussion of emergent methods and technologies.

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Current Status, Scenario, and Prospective of Renewable Energy in Algeria: A Review

Energies ◽

10.3390/en14092354 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2354

Author(s):

Younes Zahraoui ◽

M. Reyasudin Basir Khan ◽

Ibrahim AlHamrouni ◽

Saad Mekhilef ◽

Mahrous Ahmed

Keyword(s):

Solar Wind ◽

Renewable Energy ◽

Carbon Dioxide Emissions ◽

Energy Demand ◽

Fossil Fuels ◽

Energy Generation ◽

Current Status ◽

Primary Concern ◽

Small Contribution ◽

Renewable Energy Generation

Energy demand has been overgrowing in developing countries. Moreover, the fluctuation of fuel prices is a primary concern faced by many countries that highly rely on conventional power generation to meet the load demand. Hence, the need to use alternative resources, such as renewable energy, is crucial in order to mitigate fossil fuel dependency, while ensuring reductions in carbon dioxide emissions. Algeria—being the largest county in Africa—has experienced a rapid growth in energy demand over the past decade due to the significant increase in residential, commercial, and industry sectors. Currently, the hydrocarbon-rich nation is highly dependent on fossil fuels for electricity generation, with renewable energy only having a small contribution to the country’s energy mix. However, the country has massive potential for renewable energy generation, such as solar, wind, biomass, geothermal, and hydropower. Therefore, the government aims to diversify away from fossil fuels and promote renewable energy generation through policies and renewable energy-related programs. The country’s Renewable Energy and Energy Efficiency Development Plan focuses on large scale solar, wind generation as well as geothermal and biomass technologies. This paper provides an update on the current energy position and renewable energy status in Algeria. Moreover, this paper discusses renewable energy (RE) policies and programs that aim to increase the country’s renewable energy generation and its implementation status.

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