Economic Cost Analysis Research Articles

Estimation of Crop Water Requirement of Pineapple (Ananas comosus (L.) Merr.) for Drip Fertigation

The experiment was conducted at the research farm of ICAR- Central Coastal Agricultural Research Institute, Goa, India during 2016–2019 to estimate the crop water requirement (CWR) of pineapple during different growth stages and compare the pineapple crop performance and economic viability at different irrigation systems. Crop water requirement of pineapple was calculated based on the consolidated weather data of 14 years and crop evapotranspiration (ETc) of pineapple at different growth stages using Penman-Montieth equation using CROPWAT 8.0 software. In the experiemtal location, maximum crop evapotranspiration was found in the month of May (81 mm month-1) and the minimum was in the month of July (25 mm month-1). Crop water requirement was the highest in April (0.67 litre day-1 plant-1). During the period of monsoon, irrigation was withdrawn due to sufficienct soil moisture situation. Performance of pineapple crop under different systems of irrigation viz., surface irrigation, drip irrigation and drip fertigation was studied and found that the highest plant height (76.90 cm), D leaf width (5.45 cm), number of leaves (43), D leaf weight (150.3 g) and fruit weight (2.35 kg) were in drip fertigation. An estimated yield of 96.80 t ha-1 was recorded under drip fertigation treatment followed by drip irrigation (90.99 t ha-1) and surface irrigation (76.45 t ha-1) treatments. The cost economics analysis of pineapple production under different treatments revealed that the highest gross returns (` 14.5 lakhs), net returns (` 7.9 lakhs) and B:C ratio (1.2) were in drip fertigation treatment. Adoption of drip fertigation system in pineapple crop under west coast agro-climatic conditions of Goa is helpful to enhance the crop growth and yield of pineapple and fetch good economic returns.

A comprehensive review of anionic azodyes adsorption on surface-functionalised silicas.

Surface -functionalised silica networks are advanced adsorbents. They have been given much attention for treating wastewater using the adsorption technique due to the silanol reactivity, resulting in strong binding affinities towards many pollutants. This review discusses the removal of anionic azo dyes utilising various functional groups such as amines, surfactants, polymers, macrocyclic, and other chelating groups functionalised on silica's surface. This review also reveals the steadily increasing interest in surface-functionalised silicas as adsorbents, emphasising the scholarly advancements in this field as a platform for future research. For that, adsorption capacities with different experimental conditions have been compared. The possible adsorption mechanisms, rate-limiting step, and factors affecting the anionic azo dye adsorption process have been comprehensively discussed. This review discloses that adsorbent characteristics such as porosity and functional groups, besides structural properties of an anionic azo dye, significantly affect adsorption. The adsorption process followed the Langmuir isotherm and pseudo-second-order models, with a predominantly spontaneous and endothermic nature. Multiple interactions, including electrostatic interaction, π-π interactions, and hydrogen bonding, are observed between dyes and functionalised silicas, indicating the adsorption process's complexity. Regeneration and cost-economic analysis are also presented to provide a roadmap for sustainable improvements. Chemical and biological regeneration techniques restore > 80% of the spent functionalised silicas. There is a significant opportunity to improve their efficiencies and regenerability, resulting in surface-functionalised silicas being used commercially instead of only in the laboratory. Finally, future research has been proposed by identifying current research gaps, particularly concerning the application of functionalised silicas in wastewater treatment.

Parametric Method and Building Information Modeling-Based Cost Estimation Model for Construction Cost Prediction in Architectural Planning

Economic feasibility and cost analysis in the preliminary planning stage of early-phase construction projects have a significant impact on project management and implementation. However, while estimating the construction cost per unit area, the existing approaches do not account for factors other than the area-related information, causing estimation error. Therefore, a construction cost estimation model that can be utilized in the early phase of a construction project is developed in this study based on BIM in the architectural planning stage. Moreover, goodness of fit and accuracy of the model were verified through a validation method considering the BIM design process. The proposed model showed higher accuracy than the conventional models in terms of the floor area. Furthermore, it was possible to confirm the model performance based on the cost estimation accuracy range presented by the AACE. In addition, the developed model can generate estimation results corresponding to Class 1–3, a subsequent construction project stage. The findings of this study emphasize the importance of jointly considering the processes related to construction cost estimation and indicate that parameters other than the floor area need to be considered for construction cost estimation in the early phase of a construction project.

Modeling and assessment of operation economic benefits for hydronic snow melting pavement system

Hydronic snow melting pavement systems have been proposed as an energy conservation technology for pavement snow removal in response to global climate change. However, the quantification of these systems’ economic benefits remains unclear, and their operational decision-making does not consider the economic cost. This study proposes a novel method for calculating the hydronic snow melting pavement system’s economic cost and investigating the economic benefit evolution. A 2D thermo-economic model is developed. Measured data from the Beijing Daxing International Airport are utilized to validate the accuracy of the model, and the economic cost temporal variation under given snowfall conditions is demonstrated. Moreover, an extensive parametric analysis of economic cost is conducted, and sensitive parameters are identified. Then, a real operation case study under a comprehensive scenario is presented. Results show that economic cost can be divided into rapid reduction period (RRP) and stable period (SP). Fluid temperature can affect economic cost with a high fluid temperature resulting in a high economic cost in SP and a prolonged RRP. In the case study, the operation method with 0 h idling time can improve the snow melting performance and increase the economic cost by 7% compared with the method of opening after snowfall. The method with 3 h idling time can achieve optimal snow melting performance. However, its economic cost is 32 % higher than that of the method with 0 h idling time. Furthermore, staged heating method can reduce the economic cost by 7.9 % relative to constant heating method, thus providing an alternative cost-efficient solution.

Economic analysis of operation and maintenance costs of hydropower plants

The world is experiencing deep climate changes caused by increased population and rapid urbanization. Hydropower is one of the renewable energy sources that can be used to meet energy demands, but most of the hydropower plants suffer from silt erosion and cavitation problems. Therefore, it is important to decide which parts to be repair or replace, as it affects the Operation and Maintenance (O&M) costs. Presently O&M costs are speculated based on the previous years O&M costs data. Various studies are available for forecasting O&M costs, but they are plant specific. This paper deals with the assessment of the O&M costs of hydropower plants, considering the parameters and conditions involved in the O&M costs of hydropower plants. The correlations are developed to predict the O&M costs of hydropower plants and found that the developed correlation models can predict the O&M costs with an accuracy having an R2-value of 0.89, Mean Absolute Percentage Error (MAPE) of 3.53% and Root Mean Square Percentage Error (RMSPE) of 4.45% for Francis turbine-based hydropower plants, and with an R2-value of 0.97, having a MAPE of 0.17% at 1.30% RMSPE for Kaplan turbine-based hydropower plants. This study may be useful for developers, plant operators, and researchers.

Economic processes and phenomena of agricultural land use based on the theory of marginal productivity and the law of diminishing returns

The article deals with economic processes and phenomena of agricultural land use, based on the theory of marginal productivity and the law of diminishing returns. Theoretical foundations, initial statistical data, graphically and mathematically substantiated models of economic analysis of production costs and returns in agriculture, and the obtained results provide a solution to the fundamental problem of production efficiency at the micro level, having the maximum possible rate of return, the maximum possible profitability of agricultural activities, geographical features of agricultural land use, the implementation of state land policy taking into account the regional characteristics of agricultural activities, food self-sufficiency and demand in the world food market.

Optimum models of hospice at home services for end-of-life care in England: a realist-informed mixed-methods evaluation

Background Many people prefer to die at home when the time comes. Hospice at home services aim to support patients to achieve this. A range of hospice at home services exist; some services have been evaluated, but there has been limited evidence synthesis. Objectives The main objective was to find out what models of hospice at home services work best, for whom and in what circumstances. Other objectives supported this aim, including an analysis of the health economic costs of hospice at home models. Design The study was an overarching, non-interventional, realist evaluation comprising three phases. Phase 1 was a survey of hospice at home services. Phase 2 involved 12 case studies, grouped into four models on the basis of size and 24 hours per day, 7 days per week (24/7), operations, from which quantitative and health economics data were gathered. Qualitative interview data from bereaved carers, commissioners and providers were analysed to generate context–mechanism–outcome configurations. Phase 3 comprised stakeholder consensus meetings. Setting Hospice at home services across England. Participants A total of 70 hospice at home managers responded to the survey. A total of 339 patient and family/informal carer dyads were recruited; 85 hospice at home providers and commissioners were interviewed. A total of 88 stakeholders participated in consensus meetings. Main outcome measures The quality of dying and death of patients was assessed by bereaved carers (using the Quality of Dying and Death questionnaire). A patient’s use of services was collected using the Ambulatory and Home Care Record. Results Hospice at home services varied; two-thirds were mainly charitably funded, and not all operated 24/7. Most patients (77%) had cancer. Hospice at home services overall provided care that was likely to deliver ‘a good death’, and 73% of patients died in their preferred place. Six context–mechanism–outcome configurations captured factors relevant to providing optimum hospice at home services: (1) sustainability (of the hospice at home service); (2) volunteers (use of, in the hospice at home service); (3) integration and co-ordination (with the wider health and social care system); (4) marketing and referral (of the hospice at home service); (5) knowledge, skills and ethos (of hospice at home staff); and (6) support directed at the carer at home. Key markers of a good service included staff who had time to care, providing hands-on care; staff whose knowledge and behaviour promoted supportive relationships and confidence through the process of dying; and services attending to the needs of the informal carer. Areas of potential improvement for most hospice at home services were the use of volunteers in hospice at home, and bereavement care. Limitations The study had the following limitations – heterogeneity of hospice at home services, variations in numbers and patient clinical statuses at recruitment, a low Quality of Dying and Death questionnaire response rate, and missing data. Only patients with an informal carer involved on a daily basis were eligible for the study. Conclusions Hospice at home services delivered high-quality care and a ‘good death’, with the majority of patients dying in their stated preferred place. Hospice at home providers can improve their impact by focusing on the features identified that deliver the best patient outcomes. Commissioners can facilitate patient preference and reduce the number of hospital deaths by working with hospice at home services to secure their financial sustainability and increase the numbers and range of patients admitted to hospice at home services. Future research Future research should explore the use of volunteers in the hospice at home setting and evaluate approaches to bereavement support. Funding This project was funded by the National Institute for Health and Care Research (NIHR) Health and Social Care Delivery Research programme and will be published in full in Health and Social Care Delivery Research; Vol. 10, No. 24. See the NIHR Journals Library website for further project information.

Economic cost and thermal efficiency analysis of porous-minichannel heat exchanger for thermoelectric generator

Lightweight, low cost and high thermal performance are some main features of porous media. In this research, porous-minichannel heat exchanger is proposed and comprehensively studied from thermal and economic viewpoints as an innovative and efficient heat rejection mechanism for thermoelectric generators applicable in low-grade waste heat recovery. Numerical simulations are carried out to study the effect of various porous substrate configurations including the vertical/horizontal sandwich, rectangular sandwich, vertical/horizontal sandwich block, and rectangular sandwich block distributions on thermal and economic characteristics of TEG. Besides, the influence of different geometric and operational parameters including Re number, the width of solid fins (Wr), the thickness of porous inserts (tp), and number of the channels (Nch) on the performance of the TEG system are investigated. Generally, the results show that the proposed porous minichannel enhances the thermal performance of thermoelectric generator compared to the conventional minichannel heat exchangers without porous fins. The increment of porous fin thickness improves the output voltage and power but has minimal impact on the conversion efficiency. Around 17.3% and 1.2% improvement of output power compared to the base smooth minichannel is shown for the models “M3” and “M5” respectively.

An Economic Analysis of Price Spread, Marketing Efficiency and Marketing Cost of Tomato in Prayagraj District of Uttar Pradesh, India

The study was carried out to analyse the price spread, marketing efficiency and marketing cost of tomato. The Prayagraj district of Uttar Pradesh was selected purposively for the study because of the large amount of tomato production. Due to the perishable nature of tomato the farmers couldn’t stock up and had to sale in lean month. So, there wasn’t much difference in marketable and marketed surplus of tomato. The percentage of marketable surplus was highest in medium size farm group i.e., 95.28 percent followed by small farmers with 94.94 percent and large size farmers with 94.02 percent. The average marketable surplus was 320.09 quintals that is 94.75 percent. The average total marketing cost was Rs 800/qtls, the average net price received by the farmers was Rs 2000/qtls the average price spread was Rs 800/qtls, and the average Marketing efficiency was Rs 2.5/qtls.

Economic cost and technical efficiency analysis of thermal management of a triple pack of lithium-ion battery with forced airflow and nano-phase change materials

In this paper, the thermal management (THMA) of a lithium-ion battery pack (BPA) and economic analysis of the cost of cooling electricity consumption are studied numerically. The BPA contains 23 cylindrical batteries in such a way phase change material (PCM) surrounds the batteries. Finally, 7 different models are employed by changing the angle of the vanes from 0 to 5° in the period of 0–25 min and BPA temperature, as well as the amount of molten PCM and outlet temperature, are studied. Economic analysis is done for three European countries at 5 Reynolds numbers. The use of guide vanes with an angle of 1° creates the lowest maximum temperature (TM) and the average temperature (TAV) of the BPA, especially at times above 15 min. The airflow guide vanes with angles of 1 and 4° causing the lowest and highest air temperatures at the outlet in more than 20 min. Also, the vanes with an angle of 1° create the maximum amount of solid PCM. Economic studies also show that the lowest and highest power consumption for PCM charging occurs at the Reynolds numbers of 300 and 500, respectively.

Design and development of low cost sesame dehuller and its process standardization.

The study was intended to develop a low cost sesame dehuller and optimize the dehulling process. The machine for dehulling of sesame seed was designed, developed and evaluated with different independent parameters viz. soaking time, dehuller speed and dehulling time for optimization of its performance during study. The processes variables had significant effect on response parameters whereas combined effect found non-significance. The results showed that the dehulling efficiency increases with increase in dehuller speed, soaking time and dehulling time. The optimum dehulling efficiency of 79.29% was obtained at soaking time of 120min, 150rpm dehuller speed and dehulling time of 6min in this developed sesame dehuller. Mean dehulling efficiency was found to be minimum (41.84%) at 100rpm speed with 40min soaking time and 4min dehulling time. The cost economic analysis discloses that developed dehuller is economically feasible and it could be beneficial for sesame based food industries. This developed dehuller is portable; therefore it requires less labor and remains suitable on farm sesame dehulling. The findings of the research may also remain useful for development of sesame processing equipment.

Comparative analysis of the treatment results of patients with breast cancer using various ­reconstruction methods

Background. Breast cancer in many cases becomes the main cause of deterioration in the quality of life of patients due to the presence of severe postoperative asymmetry.Аim. To compare immediate and long-term results, quality of life indicators and cost-effectiveness in the treatment of patients diagnosed with breast cancer using an endoprosthesis and lipofilling reconstruction.
 Material and methods. A prospective study of the treatment results of 72 patients diagnosed with breast cancer was carried out. Patients in the control group (n=40) underwent subcutaneous mastectomy with endoprosthesis plastics. Patients of the main group (n=32) underwent subcutaneous mastectomy with primary reconstruction by lipofilling. The calculation of indicators characterizing the efficiency of the use of hospital beds of a medical institution was carried out, the number of cases and days of temporary disability was calculated, an analysis of economic costs was made based on the tariff for a completed case of treatment of the disease. All statistical analyzes were performed using the Statistica 10.0 software. The study established a significance test of p 0.05.
 Results. In the compared groups, the immediate results of surgical treatment did not differ statistically significantly (p=0.973), while the quality of life in patients after subcutaneous mastectomy with plastic lipofilling was significantly higher on the social functioning scale (0.004) than after reconstruction with the use of an endoprosthesis. When using the method of reconstruction with the use of lipofilling, it was possible to statistically significantly reduce the length of stay of patients in the hospital.
 Conclusion. The use of lipofilling as a new method of reconstruction in patients diagnosed with breast cancer allows maintaining significantly high quality of life indicators on the scale of social functioning in comparison with the group of patients who underwent reconstruction with an endoprosthesis, and also makes it possible to significantly reduce the economic costs of treating patients.

Economic thickness and life cycle cost analysis of insulating layer for the urban district steam heating pipe

The direct buried steam pipeline with effective insulation has great potential application in the district heating systems. In this study, a life cycle cost model for the direct buried steam pipeline was established, and an optimization method was proposed to improve the insulation performance. The influences of insulation material and pipe diameter on the total life cycle cost, economic thickness, energy efficiency, and payback period were analyzed. Under the low-temperature working conditions, the composite insulation scheme composed of high-temperature resistant glass wool (HTRGW) and SiO2 aerogel blanket (SAB) exhibited excellent economic efficiency. Moreover, the life cycle cost and economic thickness show a significant decrease with the increase of pipe diameter, and the economic benefit increased appropriately. When the pipe diameter increased from DN100 to DN700, the life cycle cost was decreased by 351 RMB/m, the economic thickness was decreased by 71 mm, and the economic benefit was increased by 30 RMB/m. Under the high-temperature working conditions, aluminium silicate wool (ASW) was involved in the insulation scheme. When the HTRGW/SAB was adopted instead of HTRGW/ASW, the total life cycle cost was reduced by 133–224 RMB/m, the economic thickness was reduced by 52–55 mm, and the economic efficiency was increased by 17–22 RMB/(m·a).

Economic cost and efficiency analysis of the employment of inserting rods with helical fins in a shell and tube heat exchanger under magnetic field and filled with nanofluid

Present numerical investigation studies the influence of inserting rods with helical fins in a shell and tube heat exchanger (ShT-HEX) under magnetic field (MF) and filled with two-phase nanofluid (NF) on the thermal–hydraulic performance (THP). The goal of the present article is to study the influence of different geometrical factors of fins, different Re, various MFs and also different nanoparticles concentrations on the THP of Newtonian NF flow under MF in a novel HEX using the finite volume method. Also, an economic analysis is done with the interesting parameter heat flux to reduce the weight of the HEX. It was found that the novel configuration with b = 100 mm and a = 23 mm filled with MgO-SAE10 NF at φ = 1.500% under the MF of B = 0.5 T has the optimum characteristics with the q“ = 98.08 W/m 2 and 143.60 W/m 2 at Re = 8,000 and 20,000, respectively. Based on obtained results, the costs of manufacturing of novel model can be 88% of the basic model. Therefore, the economic enhancement is done in this investigation using ANSYS-Fluent and SolidWorks software.

Direct and indirect costs of heart failure in relation to diabetes status - A nationwide study

Background and aimHeart failure (HF) and diabetes mellitus (DM) are burdensome chronic diseases with high lifetime risks and numerous studies indicate associations between HF and DM. The objective of this study was to investigate the direct and indirect costs of HF patients with and without DM. Methods and resultsPatients with a first-time diagnosis of HF from 1998 to 2016 were identified through nationwide Danish registries and stratified according to DM status into HF with or without DM. The economic healthcare cost analysis was based on both direct costs, including hospitalization, procedures, medication and indirect costs including social welfare and lost productivity. The economic burden was investigated prior to, at, and following diagnosis of HF. Patients with concomitant HF and DM were younger (median age 74 vs. 77), had more comorbidities and fewer were female as compared to patients with HF but without DM. The socioeconomic burden of concomitant HF and DM compared to HF alone was substantially higher; 45% in direct costs (€16,237 vs. €11,184), 35% in home care costs (€3123 vs. €2320), 8% in social transfer income (€17,257 vs. €15,994) and they had 27% lower income (€10,136 vs. €13,845). The economic burden peaked at year of diagnosis, but the difference became increasingly pronounced in the years following the HF diagnosis. ConclusionPatients with concomitant HF and DM had a significantly higher economic burden compared to patients with HF but without DM.

RETRACTED:Economic cost and efficiency analysis of a lithium-ion battery pack with the circular and elliptical cavities filled with phase change materials

In this work, a battery pack (BAPA) containing 21 cylindrical battery cells was investigated. Active and passive approaches are used to regulate the battery's thermal management (THM). An enclosure packed with phase change material (PCM) surrounding the battery is employed for passive heat control. For the active method, forced airflow is utilized. PCM enclosure has two shapes of circular and elliptical, in which paraffin is used. In the active method, air flows into the BAPA at the velocity range of 0.0005 to 0.002 m/s. An economic analysis is performed for the electricity cost of the active method for several European countries. Battery temperature (T-B), pressure drop (PDP) in the BAPA at different air velocities, and two different shapes of the PCM enclosure are evaluated. The FEM is used for simulations. The results reveal that the use of an elliptical enclosure increases the maximum temperature (T-Mx) and average temperature (T-Av) of the battery and the amount of molten PCM also enhances compared to the circular enclosure. Also, the amount of PDP and power cost in the elliptical enclosure is more than that in the circular one. By increasing the velocity, the active technique decreases the amount of T-B while also increasing the amount of PDP and power cost.

219 Economic Cost Analysis of Grazing Strategies for Beef Production in Kansas

Abstract Limited research has examined economic cost analyses for rotational-stocking versus continuous-stocking at different stocking rates in a particular region, which makes it difficult to provide guidance to cattle producers in evaluating different grazing strategies. The objective is to evaluate and compare economic costs for rotational and continuous grazing at medium, low, and high stocking rates under stocker grazing in Kansas. This study uses field experiment data collected from a 726-acre rangeland in Hays, Kansas and economic data from the Land Use Survey Center at Kansas State University in 2019. The field experiment from Hays kept detailed records of costs and input such as labor/time, which provides a good basis for number extrapolations to model the other grazing scenarios. We determine fencing, water infrastructure, and time/labor costs for 6 grazing management scenarios, i.e., rotational grazing versus continuous grazing at a low, medium, and high stocking rate. Low, medium, and high stocking rates are 5, 3, 2 acres/animal, respectively. Labor is divided into 6 general categories pertinent to stocker grazing in Kansas. On a per-animal basis, total labor time increases with stocking rates and is greater under rotational grazing relative to continuous grazing. Rotational grazing requires greater total costs, including labor/time on per animal basis than continuous grazing at similar stocking rates. Compared with continuous grazing at the low, medium, and high stocking rates, rotational grazing would require an additional amount of $13.19, $16.67, and $6.04 per animal respectively, to cover the estimated infrastructure and labor costs. Across all scenarios, labor costs account for the largest expense, accounting for more than 60% of total costs. Annualized costs range from $3,205 to $9,277. Fence and water infrastructure costs account for 8.4% to 31% and 3.5% to 7.3% of total costs.

Hill Agriculture and Livelihood Security: An Economic Analysis of Cost and Return Structure for Cultivation of Mustard Crop in Jammu District of J&K (UT)

"A study was conducted in the Jammu district of J &K (UT) where R.S. Pura and Bishnah development blocks were selected randomly out of 20 development blocks falling in the district. The mustard crop is among the oldest cultivated plants in Civilization. Biologically, the mustard plants belong to Cruciferae and under the genus Brassica. The primary data on cost and returns were collected through the survey method by personally interviewing the respondents with the help of a pre-tested questionnaire. For computing the cost and returns, the concepts issued by Commission on Agricultural Costs & Prices (CACP) were used. The per hectare total cost of cultivation of mustard crop was worked out to be ` 33746.34, ` 36975.67 and ` 37678.76 on marginal, small, and medium farms, respectively, with an overall average of ` 36523.75 per hectare. The per hectare gross returns for mustard cultivation on marginal, small, and medium farms were ` 46094.05, ` 51235.01 and ` 64747.22 resulting in a cost-benefit ratio of 1:1.50, 1:1.52, and 1:1.89, respectively, over cost C2. Overall, on all farms, the per hectare gross returns were ` 53953.98 with the cost benefit ratio of 1:1.72 over the exact cost."

Cost-benefit analysis of wind power integra-tion in distribution networks

The capacity of power generation note needs to be increased globally, owing to population growth and industrial revolution. The conventional power plant across the world is inadequate to satisfy growing power demand. By optimally sizing and designing the clusters of renewable energy sources such as wind, microgrid operators can economically and environmentally sustainably provide a clean power solution that can increase the supply of electricity. Wind power (WP) generation can be utilised to reduce the stress on the power plants by minimising the peak demands in constrained distribution networks. Benefits of WP include increased energy revenue, increased system reliability, investment deferment, power loss reduction, and environmental pollution reduction. These will strengthen the performance of the power system and bring economic value to society. Moreover, many challenges are considered when integrating WP into the distribution system. These include protection device miscoordination, fundamental changes in the network topology, transmission congestion, bidirectional power flow, and harmonic current injections. In this paper, the economic cost and benefit analysis of optimal integration of WP into the distribution networks is investigated through a multi-objective analytical method. The aim is to see whether investment in the WP project is economically profitable and technically viable in the distribution system. The results obtained from the study can be utilised by power system operators, planners and designers as criteria to use WP for stimulating economic development and industrial revolution and can allow independent power producers to make appropriate investment decisions.

Prospects and economic feasibility analysis of wind and solar photovoltaic hybrid systems for hydrogen production and storage: A case study of the Brazilian electric power sector

The work aims to verify the economic feasibility of renewable hybrid systems for hydrogen production and storage in the Brazilian electric power sector. The methodology applied is based on economic cost analyses of the two largest wind and solar photovoltaic plants in the country. As a result, the number of hours of electricity available for hydrogen production directly influences its cost. However, fully dedicated plants to produce green hydrogen have shown economically feasible to the exporter or other sectors, being trading hydrogen is more profitable than transforming it back into power. The model also concludes that wind and solar hybrid systems for hydrogen production and storage are still not economically viable in Brazil. The CAPEX of electrolysers and their operating losses are still very significant. Finally, hydrogen production and storage become economically feasible only from plants operating above 3000 h and for electrolysers with a CAPEX of USD 650/kWe. • Renewable hybrid systems with hydrogen are current economic unviable in Brazil. • Green hydrogen produced from curtailment events are current economic not feasible. • To produce hydrogen economically viable, the plants should operate above 3000 h. • The CAPEX should cost less than USD 650/kWe to store hydrogen economically viable. • It is more profitable trading hydrogen than transforming it back into power.