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0 5 -year program to replace 52,000 feet of deteriorating underground cable <br />o Affects the Barton, Reche Canyon, and Mohave circuits <br />o Estimated cost = $1,5000,000 <br />Capacitors <br />o Install 12 kV capacitors in various locations on the distribution system <br />o Will improve voltage levels and reduce reactive power losses <br />o Estimated cost = $500,000 <br />Supervisory Control and Data Acquisition (SCADA) <br />o Replacement of remote terminal units will: <br />• Improve communication abilities <br />• Improve control over system <br />• Increase the amount and type of data received <br />o Estimated cost = $300,000 <br />Fiber Optic <br />o Expansion of high security fiber optic loop system will improve communications <br />between: <br />• Substations <br />• Power plants <br />• ISO <br />• City facilities <br />o Estimated cost $200,000 <br />Both Projects are required to meet NERC Reliability Standards <br />Transmission Challenges <br />• Transmission lines are needed to meet future load growth <br />• Transmission system needs to meet State and Federal reliability requirements <br />Transmission Capital Plan <br />• Reconfigure lines to terminate in the Hub Substation <br />• Allows city complete control over all 69 kV lines that will connect in all 5 substations <br />• Estimated cost = $6,334,000 <br />• System protection systems will be modified to meet reliability standards <br />Power Supply Challenge <br />• Colton will need new generation resources beginning in 2010 <br />• Colton's load growth of 2.3 percent is the primary factor driving this need for resources <br />Colton's Resources <br />✓ <br />The Market <br />✓ <br />San Juan 3 <br />✓ <br />Magnolia <br />✓ <br />Hoover <br />✓ <br />Palo Verde <br />Benefits of Local Generation <br />• Transmission -related benefits <br />o Losses are lower than from out of basin resources <br />o Potential for reduction in charges from the Independent System Operator <br />• Electrical reliability for the city is enhanced <br />o The generation unit is located in its load center <br />o The generation unit is under the control of the city. <br />2008 JULY 29 JT SPC CC/RDA/CUA MEETING - 3 - <br />