scholarly journals Techno-Economic Assessment of Concentrated Solar and Photovoltaic Power Plants in Brazil

2021 ◽  
Vol 19 ◽  
pp. 583-588
Author(s):  
Guilherme de Sousa Torres ◽  
◽  
Tulio Andre Pereira de Oliveira ◽  
Anesio de Leles Ferreira Filho ◽  
Fernando Cardoso Melo ◽  
...  
Keyword(s):  
Power Plants ◽  
Net Present Value ◽  
Renewable Energy Sources ◽  
Relevant Literature ◽  
Economic Assessment ◽  
Economic Viability ◽  
Discounted Cash Flow ◽  
Cost Of Energy ◽  
Energy Trade ◽  
Project Data

The need for a diverse energy matrix has been promoting a favorable environment for integrating new renewable energy sources, such as Concentrated Solar Power plants (CSPs). Nonetheless, as a consequence of the incipient solar generation via CSPs in Brazil, there is a unsatisfactory number of researches that handle technical and economic assessments of CSP plants performance on this country. Given this scenario, this study proposes an assessment of the technoeconomic viability of the implementation of 100 MW CSP plants in Brazil, considering the Solar Tower (ST) systems, Parabolic Trough Collectors (PTC), Linear Fresnel (LFR) Reflectors and Dish Stirling (DS) Systems, and comparing the results to a photovoltaic (PV) plant. This study utilizes project data of power plants collected from the relevant literature and applies it to the city of Bom Jesus da Lapa, Brazil. The CSP techno-economic viability is evaluated through the analysis of the annual energy generated, as well as the economic viability indicators, such as the Net Present Value, the Internal Rate of Return, the Discounted Payback and the Levelized Cost of Energy, and through a single-variable sensitivity analysis. This analysis employs the discounted cash flow model, considering the energy trade in a Regulated Contracting Environment

scholarly journals Assessment of Productivity and Economic Viability of Combined Food and Energy (CFE) Production System in Denmark

Energies ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 166 ◽  
Author(s):  
Ying Xu ◽  
Lisa Mølgaard Lehmann ◽  
Silvestre García de Jalón ◽  
Bhim Bahadur Ghaley
Keyword(s):  
Renewable Energy ◽  
Winter Wheat ◽  
Biomass Production ◽  
Net Present Value ◽  
Renewable Energy Sources ◽  
Economic Assessment ◽  
Economic Viability ◽  
Economic Returns ◽  
Study Objective ◽  
Woody Crop

Agro-ecosystems for integrated food, fodder, and biomass production can contribute to achieving European Union goals to increase renewable energy sources and reduce greenhouse gas emissions. The study objective was to evaluate the productivity and economic returns from a combined food and energy (CFE) system compared to sole winter wheat and sole short rotation woody crop (SRWC) production. Two excel-based models viz. Yield-SAFE and Farm-SAFE, were used to simulate agronomic productivity and economic assessment respectively. Yield-SAFE was calibrated and validated with measured data from CFE from 1996–2016. When compared over temporal scale of 21 years, CFE systems with 150–200 m alley width had the highest net present value (NPV) followed by 100 m, 50 m, sole winter wheat and sole SRWC, indicating higher profitability of CFE systems. Sensitivity analysis of NPV with ±10% yield fluctuations, and with 0–10% discount rate, demonstrated that CFE systems was more profitable than sole crops, indicating higher resilience in CFE systems. LER in CFE ranged from 1.14–1.34 indicative of higher productivity of CFE systems compared to component monocultures. Hence, the study has demonstrated that the productivity and the economic viability of CFE systems, were higher than sole crops, for informed decision making by farm managers and policy makers to contribute to renewable energy biomass production and to mitigate the impending adverse climate change effects on agricultural production.

scholarly journals Plasma Assisted Combustion as a Cost-Effective Way for Balancing of Intermittent Sources: Techno-Economic Assessment for 200 MWel Power Unit

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5056
Author(s):  
Tadeusz Mączka ◽  
Halina Pawlak-Kruczek ◽  
Lukasz Niedzwiecki ◽  
Edward Ziaja ◽  
Artur Chorążyczewski
Keyword(s):  
Power Unit ◽  
Net Present Value ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Economic Assessment ◽  
Marginal Effect ◽  
The European Union ◽  
Present Value ◽  
Plasma System ◽  
Value Analysis

Due to the increasing installed power of the intermittent renewable energy sources in the European Union, increasing the operation flexibility of the generating units in the system is necessary. This is particularly important for systems with relatively large installed power of wind and solar. Plasma technologies can be used for that purpose. Nonetheless, the wide implementation of such technology should be economically justified. This paper shows that the use of plasma systems for increasing the flexibility of power units can be economically feasible, based on the results of a net present value analysis. The cost of the installation itself had a marginal effect on the results of the net present value analysis. Based on the performed analysis, the ability to lower the technical minimum of the power unit and the relationship between such a technical minimum and the installed power of a plasma system can be considered decisive factors influencing the economics of the investment for such an installation. Further research on better means of prediction of the minimum attainable load, which would allow determining the influence of implementation of a plasma system, is recommended. This will be the decisive factor behind future decisions regarding investing in such systems.

scholarly journals Wave Energy Converter Performance Modeling and Cost of Electricity Assessment

2010 ◽  
Author(s):  
Dmitri Jarocki ◽  
James H. Wilson
Keyword(s):  
Energy Flux ◽  
Wave Energy ◽  
Power Plants ◽  
Net Present Value ◽  
Rate Of Return ◽  
Economic Viability ◽  
Internal Rate Of Return ◽  
Present Value ◽  
Cost Of Electricity ◽  
Wave Energy Flux

California is experiencing a rapid increase in interest for the potential of converting ocean waves in into carbon-free electricity. Numerous applications have been submitted for the permitting of such renewable energy projects; however the profitability, practicability, and survivability have yet to be proven. Wave energy conversion technology has steadily matured since its naissance in the 1970’s, several wave energy power installations currently exist, and numerous plans for commercial power plants are in the works on the shores of multiple continents. This study aims to assess the economic viability of two proposed commercial wave energy power plant projects on the Central California Coast. A hypothetical 25 MW capacity wave energy plant located at a site located 5 nautical miles off of Point Arguello, in Santa Barbara County is compared to a similar site 5 nautical miles off of Morro Bay, in the County of San Luis Obispo. The Pacific Gas and Electric Company and Green Wave Energy Solutions, LLC have proposed full-scale commercial wave power plants at these sites, and are currently undergoing the federal permitting processes. Historical wave resource statistics from 1980 to 2001 are analyzed with performance specifications for the AquaBuOY, Pelamis P1, and WaveDragon wave energy converters (WECs) to calculate the annual electrical output of each device at each site. Sophisticated computer modeling of the bathymetric influence on the wave resource at each site is presented using the program Simulating Waves Nearshore (SWAN) developed by the Delft University of Technology. The wave energy flux, significant wave height, and peak period are computed at each site for typical summer and winter swell cases, using seafloor depth measurements at a 90 meter grid resolution. The economic viability of commercial electricity generation is evaluated for each WEC at each site by the calculation of the net present value of an estimated 25-year project life-cycle, the internal rate of return, and the required cost of electricity for a 10-year project payback period. The lowest required price of electricity is $0.13/kWh and occurs at the Point Arguello site using the AquaBuOY WEC. The highest annual capacity factor is 18% using the Pelamis WEC. The net present value and internal rate of return calculations suggest that the AquaBuOY WEC is profitable at both sites for electricity prices above $0.14/kWh. Shallow water wave propagation SWAN modeling demonstrated favorable wave energy flux states for WEC operation and power generation.

scholarly journals Effect of Solar Tracking on the Economic Viability of a Large-Scale PV Power Plant

2020 ◽  
Vol 24 (3) ◽  
pp. 55-65
Author(s):  
Ephraim Bonah Agyekum ◽  
Bright Kwame Afornu ◽  
Michael Nii Sanka Ansah
Keyword(s):  
Power Plant ◽  
Discount Rate ◽  
Power Plants ◽  
Large Scale ◽  
Net Present Value ◽  
Tracking System ◽  
Energy Technologies ◽  
Cost Of Energy ◽  
Solar Tracking ◽  
The Cost

AbstractThis paper evaluated the economic potential of three different photovoltaic energy technologies at a selected site, Wa, in the Upper West region of Ghana. The cost of energy and net present value metrics were used to ascertain the cost-effectiveness of these technologies (fixed, single and double axis tracker systems). From the analysis, all three technologies are economically viable at the selected site, however, a sensitivity analysis shows that the fixed axis tracker is unviable at a discount rate above 2 % whiles that of the single and double axis power plants also become impracticable at a discount rate above 6 % using the financial input parameters adopted for the study. This is an indication that, even though the selected site may have the required solar radiation for the development of large-scale PV power plant, there is the need to create the necessary conducive financial environment to enable such projects to become viable. The double axis tracking system was identified as the optimum system that should be deployed at the selected site to get the best in terms of affordability of electricity to consumers and equity payback.

scholarly journals ECOLOGICAL AND ECONOMIC ASSESSMENT OF THE CONSEQUENCES OF THE USE OF RENEWABLE ENERGY SOURCES

2020 ◽  
pp. 35-44
Author(s):  
A. Pavlyk ◽  
A. Zhulavskyi ◽  
Iu. Shkodkina ◽  
M. Maslii
Keyword(s):  
Renewable Energy ◽  
Life Cycle ◽  
Environmental Economic ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Economic Assessment ◽  
Economic Consequences ◽  
Energy Sources ◽  
Energy Product ◽  
Harmful Substances

The article is devoted to the problem of an environmental-economic assessment of consequences of using renewable energy sources. The existing system for assessing environmental-economic consequences of energy production can be applied only to traditional energy sources — combined heat and power plants (CHP plants), thermal power plants (TPP), and atomic power plants, since it is unviable to apply it for renewable energy sources. The reason lies in the peculiar features of renewable energy sources — they do not use exhaustible energy resources for the purpose of energy generation and have a small minimum size of a power station, which makes renewable energy sources more mobile and available for the use in the private sector of economy. This article proposes a methodology of an environmental-economic assessment of the consequences of energy generation from renewable energy sources, which takes into account the features of renewable energy sources use in comparison to traditional ones. In this paper, we analyze shortcomings of the existing methodology for assessing consequences of harmful substances emissions into the atmosphere and propose our own methodology. It includes a life cycle theory of an energy product, which allows to identify environmental-economic consequences at every stage of the life cycle of an energy product and to assess them. For an objective assessment we used statistical data and existing calculations from domestic scientists on a correlation between the number of diseases and volume of harmful substances emissions into the atmosphere. The methodology allows to assess and compare environmental-economic consequences of the development of a particular energy source in relation to other sources. Despite the generally accepted opinion that there are no environmental and economic consequences of the use of renewable energy sources, this paper proves that renewable energy sources have such an impact at different stages of their life cycle. Research findings and calculations in this paper allow to use existing mathematical tools to develop optimal models for the energy sector development of Ukraine. The proposed methodology can be applied to other countries in order to identify its shortcomings and develop further this methodology of assessment.

Comparative technical and economic study of Hybrid Solar-Geothermal Power Plant in Ethiopia

2021 ◽  
Vol 13 (4) ◽  
pp. 296-303
Author(s):  
B. D. Gemechu ◽  
M. E. Orlov
Keyword(s):  
Power Plant ◽  
Power System ◽  
Figure Of Merit ◽  
Power Plants ◽  
Net Present Value ◽  
Economic Assessment ◽  
Geothermal Power Plant ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
Geothermal Power

This paper presents a techno-economic assessment of a hybrid solar-geothermal power plant that is modelled taking into account the available geothermal and solar energy resources at the Tendaho-1 (Dubti) geothermal field in Ethiopia. The hybrid power plant combines a single-flash geothermal power plant with a parabolic trough solar thermal plant to increase the energy level of geothermal steam. The geothermal fluid from one of the production wells at the geothermal site and the direct normal solar irradiance prevailing in the area offer the primary sources of energy used in the modelling. A thermodynamic analysis based on the principles of mass and energy conservation and a figure of merit analysis that allows evaluating the energy and economic performance of the hybrid power plant were performed. The technical and economic efficiency assessment was performed by comparing the performances of the hybrid power plant with a power system consisting of stand-alone geothermal and solar power plants. Results of the techno-economic assessment showed that for the same amount of energy inputs, depending on the available thermal energy storage capacity, a hybrid power plant generates up to 10.4% more electricity than a power system of two stand-alone power plants while generating a higher net present value at a lower cost of generation. In addition, the hybrid power plants with and without thermal storage system exhibit an economic figure of merit values of 2.62 and 3.42, i.e. the cost of solar resource per kWh of electricity in the hybrid energy system is reduced by 70.5% and 61.5%, respectively.

scholarly journals Feasibility analysis of an off-grid photovoltaic-battery energy system for a farm facility

2020 ◽  
Vol 10 (3) ◽  
pp. 2874
Author(s):  
Damilola Elizabeth Babatunde ◽  
Olubayo Moses Babatunde ◽  
Micheal Uzoamaka Emezirinwune ◽  
Iheanacho Henry Denwigwe ◽  
Taiwo Emmanuel Okharedia ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Environmental Sustainability ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Environmental Benefits ◽  
Economic Viability ◽  
Energy Audit ◽  
Cost Of Energy ◽  
Battery Systems ◽  
Battery Energy

Renewable energy plays a very important role in the improvement and promotion of environmental sustainability in agricultural-related activities. This paper evaluates the techno-economic and environmental benefits of deploying photovoltaic (PV)- battery systems in a livestock farmhouse. For the energy requirements of the farm to be determined, a walkthrough energy audit is conducted on the farmhouse. The farm selected for this study is located in southern Nigeria. The National Renewable Energy Laboratory’s Hybrid Optimization Modeling for Electric Renewable (HOMER) software was adapted for the purpose of the techno-economic analysis. It is found that a standalone PV/battery-powered system in farmhouse applications has higher economic viability when compared to its diesel-powered counterparts in terms of total net present cost (TNPC). A saving of 48% is achievable over the TNPC and Cost of Energy with zero emissions. The results obtained show the numerous benefits of replacing diesel generators with renewable energy sources such as PV-battery systems in farming applications.

scholarly journals Dataset for Assessing the Economic Performance of a Residential PV Plant: The Analysis of a New Policy Proposal

Data ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 101
Author(s):  
Idiano D’Adamo ◽  
Massimo Gastaldi ◽  
Piergiuseppe Morone
Keyword(s):  
Input Data ◽  
Net Present Value ◽  
Economic Assessment ◽  
Similar Data ◽  
Discounted Cash Flow ◽  
Policy Proposal ◽  
Complex Decision ◽  
Alternative Scenarios ◽  
Definition Of ◽  
Photovoltaic Plants

This data article aims at providing a data description about the manuscript entitled “The post COVID-19 green recovery in practice: assessing the profitability of a policy proposal on residential photovoltaic plants”. The definition of a business plan is a complex decision because the choice of the input data significantly influences the economic assessment of a project. An Excel file is used to construct an economic model based on the Discounted Cash Flow (DCF) methodology using Net Present Value (NPV) as an indicator. The choice of input data is defined by literature analysis, and policy proposals are identified by the Revival Decree adopted by Italian Government to contrast human and economic shock effected by COVID-19. The aggregation of these data enabled us to obtain both baseline and alternative scenarios to define if the realization of a residential photovoltaic (PV) plant is economically feasible. Similar data can be obtained for other countries according to the policy actions adopted, and this work can be easily replicated in different geographical contexts and considering varying categories of stakeholders (e.g., consumers, which are called upon to implement a green transition).

scholarly journals Economic Assessment of Solar Photovoltaics Use in Agricultural Greenhouses in Greece

2018 ◽  
Vol 6 (4) ◽  
pp. 23 ◽  
Author(s):  
John Vourdoubas
Keyword(s):  
Agricultural Sector ◽  
Net Present Value ◽  
Renewable Energy Sources ◽  
Economic Assessment ◽  
Economic Incentives ◽  
Payback Period ◽  
Environmental Benefits ◽  
Solar Photovoltaics ◽  
Net Metering ◽  
The Government

Modern greenhouses can utilize renewable energy sources for covering their energy requirements and reducing their carbon footprint. Solar photovoltaics use for power generation is currently a reliable and cost-effective technology which is used in many applications. The purpose of the current work is to investigate the possibility of using solar photovoltaics in agricultural greenhouses in Greece and to assess their profitability compared with the profitability of their use in households. Semi-transparent and opaque photovoltaic cells can be used for electricity generation with the net-metering regulations covering all their annual electricity needs. Existing studies in various countries concerning their use in greenhouses have reported a payback period of the investments of 4-10 years. In Greece the cost of electricity in the agricultural sector is subsidized while economic incentives are offered regarding the use of this technology in greenhouses. Economic assessment of the investment of solar photovoltaics in greenhouses for a period of 25 years in Greece indicates payback periods of 7.2 and 14.4 years, depending on capital subsidies obtained, while positive net present values are achieved. Their use in households in Greece has a payback period of 10.4 years while the net present value is also positive. The current study indicates that the use of solar photovoltaics in modern greenhouses in Greece supported financially by the government according to the net-metering regulations is profitable, offering economic and environmental benefits to the farmers.

scholarly journals Techno-Economic Assessment of Battery Electric Trains and Recharging Infrastructure Alternatives Integrating Adjacent Renewable Energy Sources

2021 ◽  
Vol 13 (15) ◽  
pp. 8234
Author(s):  
Christoph Streuling ◽  
Johannes Pagenkopf ◽  
Moritz Schenker ◽  
Kim Lakeit
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Economic Assessment ◽  
Rail Transport ◽  
Energy Sources ◽  
Overhead Line ◽  
Model Based ◽  
Direct Use

Battery electric multiple units (BEMU) are an effective path towards a decarbonized regional rail transport on partly electrified rail lines. As a means of sector coupling, the BEMU recharging energy demand provided through overhead line islands can be covered from decentralized renewable energy sources (RES). Thus, fully carbon-free electricity for rail transport purposes can be obtained. In this study, we analyze cost reduction potentials of efficient recharging infrastructure positioning and the feasibility of covering BEMU energy demand by direct-use of locally produced renewable electricity. Therefore, we set up a model-based approach which assesses relevant lifecycle costs (LCC) of different trackside electrification alternatives comparing energy supply from local RES and grid consumption. The model-based approach is applied to the example of a German regional rail line. In the case of an overhead line island, the direct-use of electricity from adjacent wind power plants with on-site battery storage results in relevant LCC of EUR 173.4 M/30a, while grid consumption results in EUR 176.2 M/30a whereas full electrification results in EUR 224.5 M/30a. Depending on site-specific factors such as existing electrification and line lengths, BEMU operation and partial overhead line extension can lead to significant cost reductions of recharging infrastructure as compared to full electrification.

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