FPSC Electric Utility Infrastructure Workshop Florida Municipal Electric Utilities Alan Shaffer Assistant General Manager - Delivery Lakeland Electric January 23, 2006

Florida Public Power Utilities  33 Municipal Electric Utilities  1.3 Million customer meters (15% of Floridians)  Distribution 11,000 miles above ground 7,600 miles underground  Transmission 1,700 miles above ground 70 miles underground  300 substations  Every storm impacted at least one municipal electric utility

3 Florida’s Public Power Utilities  Winter Park Reedy Creek 

Nature of Storm Damage  Transmission System Most transmission systems had little to no damage  Kissimmee had 74 poles down after Charlie  Keys Energy had sailboat masts into some transmission

Nature of Storm Damage  Distribution System Vero Beach lost 100% of customers from Jeanne, Lakeland lost 80% Minor to significant pole and wire failures  Most caused from nearby tree/limb failures  Lightning burning down wire  Some pole failure attributed to successive storms and water-softened earth  Vehicles striking poles Underground  Some flooding in coastal and low areas  Some uprooting from tree failures

Nature of Storm Damage  Substations Most experienced no substation damage  Keys Energy Transformer LTC flooding and 138kv breaker bushing flashover from salt contamination  JEA had 3 substation transformers fail within 1 week attributed to effects of repeated reclosing into distribution faults  Vero Beach had significant substation switchgear damage from water intrusion

Mutual Aid  FMEA and APPA Mutual Aid Agreements Utilized Executed by all FMEA-member utilities Coordinated through FMEA Executive Director and Mutual Aid Coordinator Worked closely with electric cooperatives and investor-owned utilities  Supplied FPL with Florida and out-of-state crews Received aid from not only Florida utilities but municipals as far as Texas, Kansas, Ohio, Wisconsin, and New England

Repair Standards  All municipals utilizing external crews assigned their own personnel to oversee work and maintain standards within reason (line and tree crews)  Performed post-restoration inspections to check reconstruction and make additional corrections  All utilities supplied most all their own standard material for their repairs

Vegetation Management  Routine Distribution Maintenance Most municipals have a 3-year trim cycle Keys Energy is limited to a 6-month growth trim by local ordinance Tallahassee is on an 18-month cycle Some like Gainesville and Lakeland include service drops Herbicides and growth retardant used Trimmed to four to six foot clearance Danger trees removed where possible Outage data used by some to target locations Joint tree trimming w/ telcos would be beneficial

Vegetation Management  Routine Transmission Maintenance Most municipals maintain an annual inspection/trim cycle Jacksonville Beach and Gainesville inspect semiannually Trimmed to 10 to 15 foot clearance

Vegetation Management  Post-Storm Inspection Most utilities inspect as part of the system restoration inspection of outage areas Some dependence on severity of storm event Keys Energy and Jacksonville Beach inspect all transmission and main circuits

Pole Inspections  All municipals conduct pole inspections Most are 5 to 8-year cycle Include conductors and connections Tallahassee conducts pole-by-pole inspections of circuits with highest number of interruptions

Undergrounding  Have discussed undergrounding with community for years  Citizens appreciate learning the pros & cons Undergrounding does not solve all “hurricane” outage problems Many citizens reluctant to pay for cost of conversion, even with cost-sharing  Some utilities considering converting overhead lines to underground Winter Park beginning a selective conversion to underground Vero Beach converting aging lines when justified Jacksonville Beach converting all overhead within 3 blocks from ocean

Design Changes  Additional movement to spun concrete or steel poles and higher wind load ratings Transmission and main line distribution Kissimmee - distribution with 3-phase banks or 3-phase risers  Over-insulating substation tie-lines to reduce salt intrusion outages near coast  Winter Park installing 3-phase gang-operated switches to speed sectionalizing, initiating an undergrounding program  Some relocating rear-lot easements to street right-of-ways  Key West Wind-load design of 165+ mph Using more concrete poles 8-hour battery backup for traffic lights Using more stainless steel hardware at some locations

Other Changes  Several have shortened their pole and line clearance inspection cycles and added more line clearance crews  Several have become more aggressive with removing/topping danger trees Customers more willing to agree with clearance activities  Majority experienced few repair material shortages but some storm stock inventory levels adjusted based on experiences. Vendor alliances  Several reported Emergency Operations Plan changes from lessons learned including: Revised personnel assignments Training substation or meter personnel to assist T&D Use retired personnel Making an earlier determination of mutual aid and contract crew needs and securing logistical needs