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Renewable Energy: Solar Energy:
DNR Solar Program:
Dead Horse
Point State Park
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Two restrooms at Dead Horse Point State Park, at the overlook and at the campsite, are not connected to the electric utility. The water pressure in the restrooms was not adequate to provide the necessary flow for the toilets and sinks. The cost-effective solution was to install solar-powered pressure pumps. Light fixtures were also installed in the restrooms.
The cost of running utility lines to the two restrooms was estimated to be $100,000. Alternatively, generators could be installed at each restroom for less money than the photovoltaic (PV) systems, however, over the life of the project, generators would cost more due to higher maintenance costs and the need to purchase fuel. In addition, the PV systems eliminate the noise and emissions generators would create.
Employees of the Utah Division of Parks and Recreation (DPR) and the Utah State Energy Program installed the PV system in the spring of 2003.
System Specifications for Each Photovoltaic System
Solar Array Rated Output |
330 watts |
Inverter Capacity |
No Inverter |
Battery Capacity |
530 amp-hours (12.7 kWh) |
DC Nominal Voltage |
24 volts |
AC Nominal Voltage |
No AC voltage |
Year installed |
2003 |
Cost |
$6,188 (equipment only, includes the solar equipment as well as the pump and plumbing supplies) |
Overlook Restroom |
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| The batteries are housed in an enclosure behind the restroom. | A Division of Parks and Recreation employee is wiring the pump. |
Campsite Restroom |
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| The group campsite restroom with the photovoltaic array in the background. | The solar equipment, pump, and pressure tank are located in the utility closet of the restroom. |