|Engine - Internal combustion engines are a proven technology used worldwide. A wide selection of fuels are usable, depending on the application. link|
|Fuel Cell - A fuel cell is an electrochemical device that combines hydrogen and oxygen to produce electricity. The process is clean, quiet, and efficient. A byproduct of the process is water, however, which can be a problem for deployments in a polar environment. The technology is still in its infancy, but commercial products are becoming available. link|
|Hydroelectric - Small scale turbines can provide a source of electricty at sites where water can be found in a liquid state for at least part of the year. link|
|Solar Electric (Photovoltaic) - Cells made up from two or more layers of semiconductor material can produce electric power when excited by photons. The sun is a major source for such photons, but the process also works for other sources of light. Cells may be stacked into arrays to meet differnt voltage and power requirements. link|
|Storage - Primary and rechargable batteries are often used as a site's sole source of power or in conjuction with one or more of the available power generation technologies to provide a reservoir of continuous power to the load. Ultracapacitors are a new technology that are finding their way as a replacement for rechargable batteries. link|
|Wind - Wind-powered turbines are a clean source of power. Special problems arise with a moving mechanical device in polar regions prone to ice formation and high wind velocities. Mounting structures also provide problems for systems that may be located on ice fields well above solid ground. link|
TECHNOLOGY DEPLOYMENT EXAMPLES
This section provides brief descriptions of systems that have been deployed in the polar regions and some basic information of the specifics of the technology deployed. Links to responsible agency sites are often provided to facilitate a deeper exchange of information for others interested in deploying similar technology.