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Profitability of technologies using renewable sources of energy

Michalak J.

Poznan University of Technology Academic Journals. Electrical Engineering

2011

No. 66

33--37

The article presents the results of analysis of profitability of technologies using renewable sources of energy based on the example of wind and water power. The evaluation of economic profitability is based on two methods: net present value NPV and internal rate of return IRR. To conduct the abovementioned analysis a cash flow account has been used, including discount accounting principles. Profitability of technologies using renewable sources of energy has been conducted on the example of two objects: wind and water-power station.

Metodyka analizy ekoefektywności

Czaplicka-Kolarz K., Burchart-Korol D., Krawczyk P.

Journal of Ecology and Health

2010

R. 14, nr 6

267-271

W artykule przedstawiono zarys metodyki określania ekoefektywności. Podstawą analizy ekoefektywności jest wyliczenie wskaźników ekonomicznych i ekologicznych. Opisano podstawowe narzędzia analizy ekoefektywności: ocenę cyklu życia (Life Cycle Assessment) i metodę wartości bieżącej netto (Net Present Value). Zwrócono uwagę na różne sposoby wyliczania ekoefektywności, a także na istotę analizy ekoefektywności dla technologii/produktów wzorcowych. Wykorzystanie wskaźników wzorcowych pozwoli bowiem na stworzenie bezwzględnej skali ekoefektywności, która umożliwi porównywanie różnych technologii i produktów.

The paper outlines the methodology of eco-efficiency. The basis of eco-efficiency analysis is to calculate the economic and environmental indicators. It was described the basic eco-efficiency analysis tool: Life Cycle Assessment (LCA) and Net Present Value (NPV). Attention was drawn to different ways of calculating eco-efficiency and eco-efficiency analysis of the technologies or products references. The use of benchmarks (indicators references) will allow to create absolute scale of eco-efficiency which allows comparison of different technologies and products.

Development of Techno-Economical Objective Function for Supercapacitors Energy Storage System Implemented in Distribution System

Sahay K., Dwivedi B.

Electrical Power Quality and Utilisation. Journal

2009

Vol. 15, iss. 2

29--33

The development and advancement in storage technologies and custom power devices technologies are making the application of supercapacitors energy storage system a potentially viable solution for modern power distribution system application, permitting the system to be operated in more flexible and controllable manner. The supercapacitors energy storage system considered is supposed primarily for limiting the monthly subscribed demand levels, energy cost saving, for supply of energy in case of instantaneous need and long duration back up purpose. This paper presents the development of techno-economical multi-objective function for SCESS implemented in distribution system considering the constraints and their impact on optimization of net present value.