Assessment of levelized cost of electricity of offshore wind energy in Egypt

2017 ◽  
Vol 41 (3) ◽  
pp. 160-173 ◽  
Author(s):  
Suzan Abdelhady ◽  
Domenico Borello ◽  
Ahmed Shaban

Offshore wind turbines are being used to harness the high value of wind energy usually available on the sea sufficiently far from the shore (i.e. some kilometers). The present study provides an assessment of the potential of offshore wind energy along the Mediterranean Sea in Egypt. The techno-economic assessment was conducted considering a 7.0 MW offshore wind turbine at seven sites along the Mediterranean Sea. Fixed platforms were considered, assuming that the maximum sea depth will be 60 m, that is representative of the sea depth in the Mediterranean coast of Egypt at 5 km from the shore. The analysis reveals that a very large amount of energy can be harvested. The minimum energy production is obtained at Alexandria with a capacity factor of 55%, and the maximum energy production is obtained at El Dabaa station with a capacity factor of 63%. The levelized cost of electricity (LCOE) is estimated as to be equal to about 0.075–0.079 US$/kWh which can be considered very competitive with other renewable energy systems in Egypt. The results prove the techno-economic feasibility of the offshore wind energy resource in Egypt, and it would motivate both the research community and the policy makers for more attention regarding this resource.

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1378 ◽  
Author(s):  
Enrico Baldasso ◽  
Maria E. Mondejar ◽  
Ulrik Larsen ◽  
Fredrik Haglind

When considering waste heat recovery systems for marine applications, which are estimated to be suitable to reduce the carbon dioxide emissions up to 20%, the use of organic Rankine cycle power systems has been proven to lead to higher savings compared to the traditional steam Rankine cycle. However, current methods to estimate the techno-economic feasibility of such a system are complex, computationally expensive and require significant specialized knowledge. This is the first article that presents a simplified method to carry out feasibility analyses for the implementation of organic Rankine cycle waste heat recovery units on board vessels using low-sulfur fuels. The method consists of a set of regression curves derived from a synthetic dataset obtained by evaluating the performance of organic Rankine cycle systems over a wide range of design and operating conditions. The accuracy of the proposed method is validated by comparing its estimations with the ones attained using thermodynamic models. The results of the validation procedure indicate that the proposed approach is capable of predicting the organic Rankine cycle annual energy production and levelized cost of electricity with an average accuracy within 4.5% and 2.5%, respectively. In addition, the results suggest that units optimized to minimize the levelized cost of electricity are designed for lower engine loads, compared to units optimized to maximize the overall energy production. The reliability and low computational time that characterize the proposed method, make it suitable to be used in the context of complex optimizations of the whole ship’s machinery system.


Author(s):  
Almudena Filgueira-Vizoso ◽  
Joaquín Enríquez-Díaz ◽  
Isabel Lamas-Galdo ◽  
Félix Puime Guillén ◽  
David Cordal-Iglesias ◽  
...  

The aim of this chapter is to examine the offshore wind as a pillar for a new sustainable business. In this context, the chapter firstly analyses the significance of renewable energies. Secondly, it analyses several types of offshore renewable energies, the state of offshore wind energy in Europe, and the projections of offshore wind in the world. Thirdly, it presents an overview of the levelized cost of energy (LCOE), comparing its value for different energy technologies. Moreover, a new concept, called SCOE, is introduced to incorporates society in the LCOE equation. Finally, conclusions talk about the importance of choosing a sustainable way of generating electricity in our future.


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