scholarly journals Techno Economic Analysis of Hybrid Sea Floating Photovoltaic and Wind Turbine for Fish Cold Storage At Remote Island In Indonesia (Case Study: Small Kei Island, Maluku, Indonesia)

2018 ◽  
Vol 218 ◽  
pp. 01001
Author(s):  
Fidel Rezki Fajry ◽  
Iwa Garniwa ◽  
Achmad Fajar Tofani
Keyword(s):  
Economic Analysis ◽  
Wind Turbine ◽  
Cold Storage ◽  
Life Cycle Cost ◽  
Net Present Value ◽  
New Technology ◽  
Levelized Cost ◽  
Wind Turbine System ◽  
Cost Of Energy ◽  
Grid Scheme

Most of fisherman in Small Kei Island, Indonesia, are difficult to keep the good quality of fish for several days because unavailability of Fish Cold Storage. Due to the area is also far from grid, this paper is aimed to analyse the most optimized sizing of integrating the new technology of sea floating photovoltaic and wind turbine to achieve the minimal levelized cost of energy for powering 100 tons of fish cold storage. Ten scenarios with implemented off-grid scheme by dividing battery bank into two equal parts that will be operated interchangeably to meet 24 hours load requirement on hybrid sea floating photovoltaic and wind turbine system are performed. As result, 100 kW of wind turbine and 803kWp of sea floating photovoltaic are chosen with the most minimal levelized cost of energy of USD 0.52/kWH by life cycle cost method of 20 years. With define electricity tariff of USD 0.81/kWH and interest loan of 9%, the economic analysis result fulfil of four indicators requirement with payback period of 6 years 6 months 20 days, net present value of USD 10,981, internal rate of return of 9.10%, and profitability index of 1.60.

scholarly journals Framework for Development of an Economic Analysis Tool for Floating Concrete Offshore Wind Platforms

2020 ◽  
Vol 8 (12) ◽  
pp. 958
Author(s):  
David Cordal-Iglesias ◽  
Almudena Filgueira-Vizoso ◽  
Eugenio Baita-Saavedra ◽  
Manuel Ángel Graña-López ◽  
Laura Castro-Santos
Keyword(s):  
Economic Analysis ◽  
Net Present Value ◽  
Offshore Wind ◽  
Manufacturing Cost ◽  
Analysis Tool ◽  
Cost Of Energy ◽  
Floating Platforms ◽  
Beta Version ◽  
Installation Cost

The objective of this work is to establish a framework for the development of an economic analysis tool for floating offshore wind platforms built in concrete. The operation and usefulness of the beta version of a software, called Arcwind, is explained. It calculates the main economic aspects of offshore wind platforms built in concrete considering different locations in the European Atlantic Arc. This software allows the user to select different input parameters such as: the type of platform, the installation area of the farm, its specific location and in this way create different analysis scenarios. This paper analyzes the case study to install TELWIND® offshore concrete floating platforms in the Canary Islands, in Spain. The software provides data on the main economic parameters of the farm, such as Levelized Cost Of Energy (LCOE), Net Present Value (NPV), Internal Rate of Return (IRR), Pay-Back Period (PBP), as well as the main costs: cost of conception and definition, cost of design and development, cost of manufacturing, cost of installation, cost of operation and cost of dismantling. Using these parameters, a first analysis of the viability of this type of floating technology built on concrete is shown.

scholarly journals Developing a package for analysis and design optimization of wind turbine systems

2019 ◽  
Vol 9 (2) ◽  
pp. 154-164
Author(s):  
Ulas Eminoglu ◽  
Ozan Karahan
Keyword(s):  
User Interface ◽  
Wind Turbine ◽  
Design Optimization ◽  
Graphical User Interface ◽  
Rapid Development ◽  
Analysis And Design ◽  
Wind Turbine System ◽  
Cost Of Energy ◽  
Variable Speed Wind Turbine ◽  
The One

The installation of wind turbines and consequently the use of wind energy is increasing day by day, since the rapid development in semiconductor technology has led to more advance in the wind turbine technologies. On the other hand, it is well known that a Graphical User Interface (GUI) application provides great advantages to the user such as; the use of programming language and data input for systems without coding, getting the results with the help of symbols, icons and other visual graphics. Accordingly, in this paper, to determine the amount of energy production, cost of energy and etc., of a Wind Turbine System (WTS) that has been established or will be installed, a tool is introduced by the presented software package. Besides the analysis option, the package also offers optimization algorithms that would be used for the layout design of types of Wind Turbine Systems which are called fixed-speed and variable-speed Wind Turbine Systems seperately by keeping in consideration the wind speed and geographic features of the regions. The graphical user interface, which is the one of important features of C# program were used and called Analysis & Design Optimization Package (A&DOP).

scholarly journals Land-based wind turbines with flexible rail-transportable blades – Part 1: Conceptual design and aeroservoelastic performance

2021 ◽  
Vol 6 (5) ◽  
pp. 1277-1290
Author(s):  
Pietro Bortolotti ◽  
Nick Johnson ◽  
Nikhar J. Abbas ◽  
Evan Anderson ◽  
Ernesto Camarena ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Wind Turbine ◽  
Conceptual Design ◽  
Wind Turbines ◽  
State Of The Art ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
Blade Tip ◽  
Turbine Rotors ◽  
Future Work

Abstract. This work investigates the conceptual design and the aeroservoelastic performance of land-based wind turbines whose blades can be transported on rail via controlled bending. The turbines have a nameplate power of 5 MW and a rotor diameter of 206 m, and they aim to represent the next generation of land-based machines. Three upwind designs and two downwind designs are presented, combining different design goals together with conventional glass and pultruded carbon fiber laminates in the spar caps. One of the five blade designs is segmented and serves as a benchmark to the state of the art in industry. The results show that controlled flexing requires a reduction in the flapwise stiffness of the blades, but it represents a promising pathway for increasing the size of land-based wind turbine rotors. Given the required stiffness, the rotor can be designed either downwind with standard rotor preconing and nacelle uptilt angles or upwind with higher-than-usual angles. A downwind-specific controller is also presented, featuring a cut-out wind speed reduced to 19 m s−1 and a pitch-to-stall shutdown strategy to minimize blade tip deflections toward the tower. The flexible upwind and downwind rotor designs equipped with pultruded carbon fiber spar caps are found to generate the lowest levelized cost of energy, 2.9 % and 1.3 %, respectively, less than the segmented design. The paper concludes with several recommendations for future work in the area of large flexible wind turbine rotors.

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 An Economic Analysis of the South-North Bali Connection Railway Plan in The Acceleration of Economic Equality Development in Bali, Indonesia

2019 ◽  
Vol 4 (3) ◽  
pp. 208-211
Author(s):  
Dewa Ketut Sudarsana
Keyword(s):  
Economic Analysis ◽  
Life Cycle Cost ◽  
Net Present Value ◽  
Reduction Rate ◽  
Cost Savings ◽  
Indirect Costs ◽  
Transportation Infrastructure ◽  
Cost Ratio ◽  
Railway Line ◽  
Business Entities

At present the economic development in the province of Bali between South and North Bali is very significant. This condition is presumed to be the transportation infrastructure for the connecting road of South Bali - the existing aiIDRort is not optimal. The alternative transportation infrastructure studied is the plan to build a railway line across South-North Bali. Mengwitani-Singaraja link road is required to be capable to provide more optimal accessibility so that there is an even distribution of economic growth.he indicators used in the feasibility analysis of economic aspects are net present value (NPV), benefit cost ratio (BCR) and economic internal rate of ruturn (EIRR) The price component is used by the shadowprice method. Costs calculated according to the life cycle cost of the project development. Benefits calculated include direct benefits in the form of passenger ticket income and indirect costs in the form of cost savings for existing road users, a multiplier effect, an increase in tourist visits to northern Bali. Economic analysis indicates that the planned North-North Bali railway line is worth proceeding, this is shown by the NPV indicator of IDR 860 billion, BCR of 1.11 and EIRR of 13.11% greater than the 12% price reduction rate. Although it shows that there is feasibility of economic studies, a strategy is needed to produce financial feasibility so that it can be offered in cooperation between government and business entities (PPP) in order to accelerate its developmen

scholarly journals Performance and Techno-economic Analysis of a Hybrid Photovoltaic/thermal System for Building Application in Turkey

2021 ◽  
Author(s):  
Kivanc Basaran ◽  
İlayda Koç
Keyword(s):  
Economic Analysis ◽  
Net Present Value ◽  
Residential Buildings ◽  
Mean Value ◽  
Climatic Conditions ◽  
Simulink Model ◽  
Cost Of Energy ◽  
Equity Ratio ◽  
Roof Area ◽  
Input Variables

Abstract Residential buildings need demand of energy for both heat and electricity. However, it’s not always possible to meet this need by using individual panels due to the limited roof area. In addition, performing electrical and thermal energy production by using separate panels causes loss of performance and efficiency. The hybrid photovoltaic thermal (PV/T) collectors could be used in order to meet this necessity into the same collector. This paper investigates the performance and economic analysis of a PV/T collector for a building application in Turkey climatic conditions. For this purpose, the Matlab/Simulink model of the PV/T collector was prepared. The electrical and thermal performance of the PV/T collector has been investigated by changing various parameters on this model. In addition, market survey was conducted for economic analysis. 11 different input variables such as average daily irradiation, electrical and thermal efficiency, price of electricity and heating, operation and management cost, capital cost, debt to equity ratio, interest rate, discount rate and inflation rate are used to calculate the economic evaluation parameters such as net present value (NPV), levelized cost of energy (LCOE) and payback period (PBP). The results show that, the mean value of LCOE, NPV and PBP are 0.0467 €/kWh, 7905.3 € and 6 years respectively for the project size at 8.96 m2 which is consist of 7 panels in the 25 years life cycle. Also, the average electrical and thermal efficiencies are defined as 13.4% and 69.3% respectively during.

scholarly journals Economic Analysis of Replacing HPS Lamp with LED Lamp and Cost Estimation to Set Up PV/Battery System for Street Lighting in Oman

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7697
Author(s):  
Rona George Allwyn ◽  
Rashid Al Abri ◽  
Arif Malik ◽  
Amer Al-Hinai
Keyword(s):  
Economic Analysis ◽  
Co2 Emissions ◽  
Cost Estimation ◽  
Life Cycle Cost ◽  
Light Emitting Diode ◽  
Battery System ◽  
Street Lighting ◽  
Sultan Qaboos University ◽  
Cost Of Energy ◽  
Set Up

In this paper, two aspects related to streetlight systems are considered. In the first part, the economic analysis of replacing existing HPS lamps with light-emitting diode (LED) and discrete LED lamps for street lighting is performed using actual data from Oman. The street lighting system inside Sultan Qaboos University is considered for the case study. The discounted payback period, which is calculated to study the practicability of implementing the system, is found to be 1.01 years, making the system financially appealing. Moreover, the estimated reduction of a carbon footprint shows that tonnes of CO2 emissions are reduced, which makes it environmentally attractive. The second part of the paper considers optimal sizing of PV/battery system for a new streetlight system with LED lamps. The life cycle cost analysis was performed and the related cost of energy generated per kWh is estimated as 0.097 $/kWh which proves the economic viability of the system to be implemented in Oman besides minimizing the CO2 emissions to zero.

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