scholarly journals Techno-Economic Assessment of a Grid-Independent Hybrid Power Plant for Co-Supplying a Remote Micro-Community with Electricity and Hydrogen

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1375
Author(s):  
Tian Xia ◽  
Mostafa Rezaei ◽  
Udaya Dampage ◽  
Sulaiman Ali Alharbi ◽  
Omaima Nasif ◽  
...  
Keyword(s):  
Economic Assessment ◽  
Water Velocity ◽  
Economic Feasibility ◽  
Pv System ◽  
Levelized Cost Of Electricity ◽  
Levelized Cost ◽  
Sensitivity Assessment ◽  
Hydrokinetic Turbine ◽  
Hybrid Power Plant ◽  
The Impact

This study investigates the techno-economic feasibility of an off-grid integrated solar/wind/hydrokinetic plant to co-generate electricity and hydrogen for a remote micro-community. In addition to the techno-economic viability assessment of the proposed system via HOMER (hybrid optimization of multiple energy resources), a sensitivity analysis is conducted to ascertain the impact of ±10% fluctuations in wind speed, solar radiation, temperature, and water velocity on annual electric production, unmet electricity load, LCOE (levelized cost of electricity), and NPC (net present cost). For this, a far-off village with 15 households is selected as the case study. The results reveal that the NPC, LCOE, and LCOH (levelized cost of hydrogen) of the system are equal to $333,074, 0.1155 $/kWh, and 4.59 $/kg, respectively. Technical analysis indicates that the PV system with the rated capacity of 40 kW accounts for 43.7% of total electricity generation. This portion for the wind turbine and the hydrokinetic turbine with nominal capacities of 10 kW and 20 kW equates to 23.6% and 32.6%, respectively. Finally, the results of sensitivity assessment show that among the four variables only a +10% fluctuation in water velocity causes a 20% decline in NPC and LCOE.

scholarly journals Light or Dark Greywater for Water Reuse? Economic Assessment of On-Site Greywater Treatment Systems in Rural Areas

Water ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 3637
Author(s):  
Eduardo Leiva ◽  
Carolina Rodríguez ◽  
Rafael Sánchez ◽  
Jennyfer Serrano
Keyword(s):  
Public Schools ◽  
Rural Areas ◽  
Water Reuse ◽  
Central Zone ◽  
Economic Assessment ◽  
Economic Feasibility ◽  
Operating Costs ◽  
Small Scale ◽  
Capital Costs ◽  
The Impact

Water scarcity is causing a great impact on the population. Rural areas are most affected by often lacking a stable water supply, being more susceptible to the impact of drought events, and with greater risk of contamination due to the lack of appropriate water treatment systems. Decentralized greywater treatment systems for water reuse in rural areas can be a powerful alternative to alleviate these impacts. However, the economic feasibility of these systems must be thoroughly evaluated. This study reports an economic analysis carried out on the viability of greywater reuse considering scenarios with light greywater or dark greywater to be treated. For this, data obtained from the assembly and monitoring of greywater treatment systems located in the north-central zone of Chile, supplemented with data obtained from the literature were used. The results showed that both scenarios are not economically viable, since the investment and operating costs are not amortized by the savings in water. In both evaluated cases (public schools), the economic indicators were less negative when treating light greywater compared with the sum of light greywater and dark greywater as the inlet water to be treated. The investment and operating costs restrict the implementation of these water reuse systems, since in the evaluation period (20 years) a return on the initial investment is not achieved. Even so, our results suggest that the best alternative to reuse greywater in small-scale decentralized systems is to treat light greywater, but it is necessary to consider a state subsidy that not only supports capital costs but also reduces operating and maintenance costs. These findings support the idea that the type of water to be treated is a factor to consider in the implementation of decentralized greywater treatment systems for the reuse of water in rural areas and can help decision-making on the design and configuration of these systems.

scholarly journals Use of Hydrogen in Off-Grid Locations, a Techno-Economic Assessment

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3141 ◽  
Author(s):  
Lorién Gracia ◽  
Pedro Casero ◽  
Cyril Bourasseau ◽  
Alexandre Chabert
Keyword(s):  
Hydrogen Production ◽  
Ghg Emissions ◽  
Water Electrolysis ◽  
Economic Assessment ◽  
Business Case ◽  
Diesel Generator ◽  
Negative Effects ◽  
Levelized Cost Of Electricity ◽  
Grid Solution ◽  
The Impact

Diesel generators are currently used as an off-grid solution for backup power, but this causes CO2 and GHG emissions, noise emissions, and the negative effects of the volatile diesel market influencing operating costs. Green hydrogen production, by means of water electrolysis, has been proposed as a feasible solution to fill the gaps between demand and production, the main handicaps of using exclusively renewable energy in isolated applications. This manuscript presents a business case of an off-grid hydrogen production by electrolysis applied to the electrification of isolated sites. This study is part of the European Ely4off project (n° 700359). Under certain techno-economic hypothesis, four different system configurations supplied exclusively by photovoltaic are compared to find the optimal Levelized Cost of Electricity (LCoE): photovoltaic-batteries, photovoltaic-hydrogen-batteries, photovoltaic-diesel generator, and diesel generator; the influence of the location and the impact of different consumptions profiles is explored. Several simulations developed through specific modeling software are carried out and discussed. The main finding is that diesel-based systems still allow lower costs than any other solution, although hydrogen-based solutions can compete with other technologies under certain conditions.

scholarly journals Mapping and Analysis of Initial cost Against Levelized Cost of Energy for Residential PV Rooftoop in Indonesia

2018 ◽  
Vol 67 ◽  
pp. 01024 ◽  
Author(s):  
Riadhi Fairuz ◽  
Eko Adhi Setiawan ◽  
Ikhsan Hernanda
Keyword(s):  
Net Present Value ◽  
Economic Feasibility ◽  
Solar Irradiation ◽  
Solar Pv ◽  
Pv Systems ◽  
Levelized Cost ◽  
Initial Cost ◽  
Cost Of Energy ◽  
The Difference ◽  
The Impact

Future electricity tariffs are expected to increase. To overcome this condition, arise the idea how the residential can generate its own electricity by exploiting the potential of solar energy. However, there are some constraints in its implementation due to the difference of the initial cost and sales from solar PV systems in various region of Indonesia. The purpose of this study is to determine the impact of initial cost on the levelized cost of energy from the system. This study uses the calculation of Levelized Cost of Energy (LCoE) and economic feasibility analysis through the calculation of net present value with net metering scheme. Manado is the most optimal city to implement this system. The initial cost will affect to the LCoE, the high initial cost can be covered by the amount of cash flow generated by the system which has huge solar irradiation potentials.

scholarly journals Development and Test of Solutions to Enlarge the Power of PV Irrigation and Application to a 140 kW PV-Diesel Representative Case

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3538 ◽  
Author(s):  
Rita H. Almeida ◽  
Isaac B. Carrêlo ◽  
Eduardo Lorenzo ◽  
Luis Narvarte ◽  
José Fernández-Ramos ◽  
...  
Keyword(s):  
State Of The Art ◽  
Economic Feasibility ◽  
Performance Ratio ◽  
Performance Indices ◽  
Pv System ◽  
Levelized Cost Of Electricity ◽  
Current State ◽  
Design Characteristics ◽  
Olive Trees ◽  
And Performance

The current state of the art of photovoltaic (PV) irrigation systems is limited to PV peak powers below 40 kWp, which does not cover the irrigation needs of farmers, co-operatives, irrigator communities, and agro-industries. This limitation of power is due to two main technical barriers: The quick intermittence of PV power due to the passing of clouds, and the maladjustment between PV production and water needs. This paper presents new solutions that have been developed to overcome these barriers and their application to the design and performance of a 140 kWp hybrid PV-diesel system for the drip irrigation of 195 ha of olive trees in Alter do Chão, Portugal. The performance of the solutions was analysed during two years of real operation. As the performance of the PV system is not only affected by intrinsic-to-design characteristics, but also by circumstances external to the system, new performance indices were developed. As an example, the percentage of use of PV electricity, PVSH, was 78% and 82% in 2017 and 2018, respectively, and the performance ratio of the PV part, PRPV, was 0.79 and 0.80. The economic feasibility was also analysed based on experimental data, resulting in savings in the levelized cost of electricity of 61%.

scholarly journals Techno-Economic Feasibility Assessment of Solar PV Water Pumping System In Dryland: Case Study In Madura

Rekayasa ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 168-174
Author(s):  
Nizar Amir
Keyword(s):  
Economic Assessment ◽  
Electrical Energy ◽  
Paddy Rice ◽  
Economic Feasibility ◽  
Solar Pv ◽  
Diesel Generator ◽  
Pv System ◽  
Pumping System ◽  
Water Pumping ◽  
Solar Pv System

Indonesia has enormous solar radiation potential, and it can be converted to electrical energy by utilizing solar PV systems. Mainly the irrigation of paddy rice fields in Indonesia dependent on a diesel-powered water pumping system. A solar PV system can replace this method, and it generates several benefits. The present study proposed the utilization of a solar PV system to drive the water pump based on a 100% renewable power supply. The technological and economic viability assessment of solar PV water pumping system to irrigate paddy rice filed at Telang village, Bangkalan, Indonesia, is investigated. The HOMER software has been used to generate the optimal configuration of a renewable system. Initial capital, net present cost, and cost of energy will evaluate as economic assessment criteria. The solar PV and diesel generator water pumping system also compared. The results showed that for water pumping systems, a solar PV system is more cost-effective than a diesel generator. It has lower annual operational and maintenance costs, 100% renewable energy penetration, and free energy cost.

The Impact of CO2 Compressor Characteristics and Integration in Post Combustion Carbon Sequestration Comparative Economic Analysis

2010 ◽  
Author(s):  
Aaron A. Koopman ◽  
David A. Bahr
Keyword(s):  
Carbon Sequestration ◽  
Carbon Capture ◽  
Sensitivity Analyses ◽  
Heat Integration ◽  
Levelized Cost Of Electricity ◽  
Carbon Capture And Sequestration ◽  
Levelized Cost ◽  
Compressor Power ◽  
Relative Comparisons ◽  
The Impact

The objective of this paper is to better equip the reader with tools to make relative comparisons between different Carbon Capture and Sequestration (CCS) concepts including various CO2 compressor configurations with more confidence. Methods for analyzing comparative costs for CCS implementation in Coal plants, in terms of Levelized Cost of Electricity (LCOE) and cost per ton CO2 removed or avoided ($/tonCO2) are described. The contribution of compression to LCOE is significant and highly dependent on configuration. Critical inputs required for accurately calculating compressor power and some common errors that significantly impact the results of power consumption can increase the estimated power required by 40%. Sensitivity analyses for critical compressor characteristics are provided. In addition, the impact of energy (heat) integration on the overall economics of the plant can reduce the LCOE penalty. Finally, configuration parameters for systems meeting the national targets of 35% LCOE penalty for CCS costs are explored.

scholarly journals Optimal Design of Environmental-Friendly Hybrid Power Generation System

2021 ◽  
pp. 171-177
Author(s):  
SeyedVahid Hosseini ◽  
Ali Izadi ◽  
Afsaneh Sadat Boloorchi ◽  
Seyed Hossein Madani ◽  
Yong Chen ◽  
...  
Keyword(s):  
Power Plants ◽  
Target Domain ◽  
Levelized Cost Of Electricity ◽  
Hybrid Power ◽  
Load Following ◽  
Environmental Friendly ◽  
Levelized Cost ◽  
Sharing Strategy ◽  
Hybrid Power Plant ◽  
Power Generation System

AbstractCombination of both renewable and fuel-based generation systems is an advantageous approach to develop off-grid distributed power plants. This approach requires evaluation of the techno-economic potential of each source in a selected site as well as optimization of load sharing strategy between them. Development of a remote hybrid power plant in an off-grid area is the interest of this study. Defining all available combinations, characteristics of performance, cost and availability of them evaluated. Applying constraints, multi-objective target domain based on load following and Levelized Cost of Electricity is established in which by utilizing Pareto front approach, optimized scenarios is achieved.

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