Private Island Power Generation
The quiet and dreamy isolation offered by some private islands may be part of their allure, but it can also leave them stranded when it comes to securing a reliable energy supply. If connecting to a mainland power grid is impractical or too expensive, there are creative solutions that can keep these idyllic retreats powered.
Many islands are able to tap into renewable energies that are ideally suited for their geography, climate, and resource availability. Solar, wind, and biomass energy are all good options for islanders. In addition, hydropower holds potential in some mountainous island nations and tidal and ocean energy has promise in tectonically positioned islands. Geothermal energy is being actively developed on some island nations as well.
However, achieving a 100 percent self-sufficient island energy supply is still challenging. Getting there requires smart planning and the right mix of technologies.
One of the biggest challenges to overcome is the seasonal variation in electricity demand. The island’s population triples in the summer, making it essential to have a large energy system that can handle both the high and low demand periods. The solution to this challenge is storage, which can be accomplished by using supercapacitors that allow energy to be stored for use later.
Isle au Haut’s innovative project has caught the attention of industry-related organizations, including Efficiency Maine, an independent administrator of energy efficiency programs. Ian Burnes, director of strategic initiatives, says the Isle au Haut project has the potential to make a significant difference not only on the island, but also on the mainland in the state as a whole.
As a result of its work, the Isle au Haut project has become a model for other islands and communities that are interested in pursuing renewable energy and becoming 100% self-sufficient. While the project has posed some unique challenges, Wilson believes it has proven that a community can achieve a 100 percent self-sufficient island energy system with a little creativity and the support of local partners.
Although Isle au Haut’s residents will incur additional costs to their household budgets, factors like savings on heating costs, the use of air-to-water heat pumps, and reduced electricity consumption by tourists can soften the blow. Furthermore, the fact that they are reducing fossil fuel usage makes it a win-win for the environment and for their own quality of life.