Reduce Diesel consumption by 90% or more on an off grid island. Adam’s Key houses year-round NPS employees who help preserve and maintain Biscayne National Park, which protects coral reefs, mangroves and cultural artifacts. Fuel runs are cumbersome and expensive, not to mention environmentally unfriendly. We designed and implemented a system that would minimize fuel needs while providing the needed services for staff: laundry, lighting, and air conditioning.
The system is performing as designed and has slightly exceeded goals and expectations. The aging AC units have been replaced with 24 SEER ultra-high efficiency units, and refrigerators and washing machines have been replaced with energy star units. The lighting has been replaced with CFL and LED lighting with many control circuits and the clothes dryers and stoves were replaced with propane based units. 15,000 watts of solar and a battery system has been installed.
With the heat of the summer and afternoon storms, the generator is running about 2 hours every third day which is a little lower that we had planned (95% cut in summer). By fall we expect to be down to a couple hours per week and by winter we do not expect the generator to have to run except for exercise and equalization. This will represent about 98% decrease in generator maintenance, generator wear and fuel costs.
Collectors: 15,000 Watts
Inverters: Four battery backed inverters and seven solar inverters were installed.
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