Solar Power

General Description:

In the event that intelligent transportation system hardware is located in a low-power area, solar power may be used.  Typical solar power equipment includes a solar collector panel and a series of batteries to store the energy. 

Effects of Solution:

¨ Increase Passenger Throughput

¨ Increase Roadway Capacity

¨ Manage System Efficiency

¨ Reduce Local Demand

Solar power is not a solution in itself.  It may be used in conjunction with other technologies to be effective.  Alternative power, such as solar power, allows for the use of ITS solutions in areas where traditional power is not available.

Examples of Implementation:

Many portable devices such as portable dynamic message signs or portable speed display systems use solar power as their primary power supply, and the cost of the solar power is included in the price of these systems. 

Cost/Financial Information:

(Cost/financial information is estimated, and will vary based on size and scope of project, number of units, etc.)

	Capital Cost
Solar Power System	$15-50K

Capital costs for a solar powered system depend on the amount of power (watts) needed.  The lower capital cost is for a system requiring 1000 watts, while the upper end reflects a system of 3000 watts.  Cost varies with the type of batteries and number of days of storage capacity.

Additional Resources:

Department of Energy, Solar Information: http://www.doe.gov/energysources/solar.htm

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