|System||Photovoltaic & wind power system with engine generator and battery back-up.|
|Location||This is a portable system that can meet a variety of applications.|
|Description||The Firefly 120H, built by Energia Total, is a mobile,
trailer-mounted, solar and wind power system, with battery energy
storage and engine generator back-up. It is intended for use in
supplying moderate electrical power requirements, primarily in areas
with road access.
Initially equipped with a 400-Watt solar array and a 300-Watt maximum output wind turbine, the unit has been augmented with an auxiliary 320-Watt PV array to boost performance. The specifications below will reflect this addition to the system.
Helicopter pick-up points were welded to the trailer frame to facilitate use in more inaccessible areas.
The NSF owns two FirefFy units for use in the Arctic Program. Both have been deployed many times over a six-year period. Each has proven to be a fairly reliable, low emissions, low maintenance power system. These “package solution” power systems make it quite easy to go in and set up a small field camp, with power available right from the start.
The batteries in both units were replaced after five years. This is not quite as long a service life as might be expected, probably due to repeated deep discharge to low-voltage disconnect (operator error). The auxiliary PV arrays were added when the batteries were replaced to help prevent such deep discharging.
One wind turbine failed in year six of seasonal operation. With the auxiliary PV array, the unit was able to support camp loads, while maintaining an adequate charge on the batteries.
The primary maintenance issue has been with the trailer platforms, which have not held up as well as one might hope over the rough Alaskan backroads.
Note: Energia Total is no longer in business. This information is provided as an example of what has been achieved in the past.
|Data||Power system supports camp infrastructure only. No system performance or scientific data are logged or communicated on a continuous basis.|
|Comms||System typically powers camp laptops and land mobile and Iridium communications. E-mail and data transfers were accomplished by researchers while on site.|