화학공학소재연구정보센터
Renewable Energy, Vol.29, No.6, 949-960, 2004
Utility-scale wind on islands: an economic feasibility study of Ilio Point, Hawai'i
The opportunity now exists for the development of a utility-scale wind farm in Hawai'i. A combination of factors leads to the conclusion that wind-generated electricity has a sizeable cost advantage over Hawai'i's traditional petroleum fueled generation. In 1995, Global Energy Concepts (GEC) conducted feasibility studies of potential wind energy projects throughout Hawai'i. The study included a site on the island of Moloka'i near Ilio Point. However, GEC classified the location as unfeasible due to relatively low Moloka'i electricity demand and the lack of interisland transmission capability. Four factors have changed since the GEC study. The cost of petroleum has risen dramatically, the cost of capital has decreased, wind power technology has improved greatly and Hawai'i has adopted a renewable portfolio standard. These economic and technical changes now make it feasible to construct a utility-scale wind farm on Moloka'i and export the energy to the neighboring island of O'ahu via a new undersea transmission system. Detailed financial analysis results in an estimated project cost of $291 million for a 180 MW wind farm and related transmission infrastructure. The net cost of energy delivered to the O'ahu grid is 3.22 cents/kWh, a 34% savings compared to the cost of present petroleum fueled generation. This study reveals that it is prudent to pursue high-level industry and government debate regarding the feasibility of constructing the Ilio Point wind farm. High electricity rates act as a competitive disadvantage to businesses in Hawai'i compared to mainland-based firms. The energy industry in Hawai'i is a valuable partner in making the state more competitive in the high tech economy of the 21st century. The Ilio Point project is a key initiative in this partnership. (C) 2003 Elsevier Ltd. All rights reserved.