These were funded by the Alaska Energy Authority. We completed the economic and technical feasibility studies for Adak. The DOE funds were also be used to continue APIA's role as project coordinator, to expand the communication network quality between all participants and with other wind interest groups in the state and to provide continued education and training opportunities for regional participants.
Under this project, the Aleutian Pribilof Islands Association (APIA) conducted wind feasibility studies for Adak, False Pass, Nikolski, Sand Point and St. In California, the net present cost of the hybrid microgrid is negative because, unlike a diesel-only microgrid, a hybrid microgrid has lower life cycle costs than the power costs without a microgrid. The net present cost for a hybrid microgrid is 19% lower in New Mexico and 35% lower in Maryland than a diesel-only microgrid.
The cost savings to provide this more resilient backup power system as compared to a diesel-only microgrid are significant. The improved performance of the hybrid system is resilient to conditions experienced over the last 20 years in solar irradiance and sees little degradation in performance immediately after a hurricane. Under realistic conditions, a hybrid microgrid can provide higher system reliability when islanded and have a lower life cycle cost under multiple market conditions than a traditional diesel generator-based system. We examine the impacts for microgrids in California, Maryland, and New Mexico and show that a hybrid microgrid is a more resilient and cost-effective solution than a diesel-only system. This paper provides a new statistical methodology that calculates the impact of distributed energy reliability and variability on a microgrid’s performance and a novel use of more » the optimization platform REopt to explore multiple cost savings and revenue streams. Reducing the number of emergency diesel generators through reliance on PV and battery, retail bill savings, and demand response and wholesale market revenue streams are all important. Existing life cycle cost studies on hybrid microgrids-which combine photovoltaics (PV), battery storage and networked emergency diesel generators-also have not identified all the potential economic opportunities. A table lists technical =, number = ,Ĭurrent designs and assessments of microgrids have ignored component reliability, leading to significant errors in predicting a microgrid’s performance while islanded. The power describes the design, performance, installation, and acceptance of the hybrid system. Energy capacity has not only met projections, but the system's flexibility has allowed energy output to be increased 40 percent beyond design level to accommodate the Islanders' enthusiastic demand for power. Power availability has exceeded 99 percent, a level comparable with local utilities. The performance of the Coconut Island power system has been an unquestioned success.
#ECONOMICS COCONUTS CAPITAL ISLAND FULL#
The system combines the quality, reliability and low operating costs of photovoltaics with the lower capital cost, high energy density and high efficiency at full load of diesel generators. Installation began on Jand the system was operational on October 30, 1987.
#ECONOMICS COCONUTS CAPITAL ISLAND INSTALL#
On February 6, 1987, Westinghouse Industry Services Queensland and Integrated Power Corporation (IPC) of Rockville, Maryland began their joint effort to design, build and install a hybrid photovoltaic/diesel power generation station.
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