Carolina s 21 st Century Electric Grid

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1 Carolina s 21 st Century Electric Grid Bobby Simpson Director, Grid Investment Plan Integration Duke Energy 7x24 Exchange Carolinas Chapter Technical Summit

2 How will you use electricity today to support your quality of life or effectiveness in your job? 2

3 DEC Frequency of Customer Outages Reliability is PERSONAL 75k 60k 45k 30k 10yr Grid Incidents Projection (without change in approach) DEP k 80k 75k 65k 60k 55k Forecasted Actual (DEP) 80k+ 70k incident 50k 45k 40k 35k 30k 3

4 Power outages Realities of the 20 TH CENTURY GRID Built out over 100 year period Designed for legacy communities More susceptible to severe weather (age and design) 4

5 INFRASTRUCTURE AGE end of useful life for many critical components NORMAL INVESTMENT $1B per year for past five years Why the time to invest is NOW OUTAGE RESTORATION faster and safer possible following bad weather events POWER INTERRUPTIONS greater frequency & longer durations without new approach MODERN TECHNOLOGY data & monitoring allow targeted uplifts & efficient operations 5

6 REDUCE WEATHER IMPACTS Hardening & Resiliency Targeted Underground H&R ENABLE & EMPOWER CUSTOMERS Renewables Integration Advanced Metering TUG Grid Improvement Plan Cyber Security Physical Security IMPROVE SECURITY SOG ADV SYS COMM + Self-Optimizing Grid Advanced Systems Communication Uplift REDUCE OUTAGE FREQUENCY & DURATION Ambitious 10-year plan to build a better energy future, making the grid smarter, more reliable and September more 2017 secure, while stimulating economic growth 6

7 HARDENING Investments that lower system risk and prevent outage events from occurring addresses grid integrity and asset end of life more modern infrastructure & design address root causes of outages Distribution Hardening & Resiliency Grid Integrity and Event Elimination Transformer retrofit Deteriorated conductor / UG cable Replacement Physical & cyber security Urban UG uplift Oil filled equipment replacement GIP RESILIENCY Investments that minimize event impacts and improve ability to recover rapidly minimizing number of customers impacted building N-1 capability leveraging analytics to support rapid restoration Event Impact Reduction & Recovery Sectionalization Loop close out Rural circuit ties High impact sites Capacity margin System Intelligence 7

8 Hardening & Resiliency Examples Charlotte Douglas Robbinsville Circuits Lake Lure High Point GIP Greensboro Coliseum Bryan Park North Carolina South Carolina Merrifield Park GSP Airport Longtown York - Sharon Grove Circuits Nichols Cheraw Pee Dee River Crossings Aynor 8

9 Targeted Underground GIP Leveraging historic data to strategically move thousands of miles of hard-to-access overhead power lines underground TARGETED UNDERGROUNDING PROGRAM Significantly reduce outages Reduces power blips and blinks More efficient storm restoration efforts Undergrounding program drives higher reliability by significantly reducing risk of outage causing line faults the susceptible power line segments. 9

10 Targeted Underground GIP 1 Simple Tap Line 3 Subdivision 2 Extended Tap Line Durham, NC 4 Community Chester, SC Greenville, SC Greenville, SC GOAL: start with 1 s and 2 s to minimize complexity and allow time for build out of more complex processes to support 3 s & 4 s 10

11 GIP A grid that automatically reacts to and mitigates failures while effectively managing renewable energy so that customers rarely experience service interruptions Self-Optimizing Grid SELF-OPTIMIZING GRID uses intelligence to automatically reconfigure system to ensure the most efficient and reliable delivery of energy, regardless of type and location of generation source We are transforming our radial distribution system to an automated distribution network to attain: Connectivity: multiple power flow routes for flexibility Capacity: sufficiently sized lines and equipment to support backfeeding Control: intelligent automation to optimize 11

12 GIP Self-Optimizing Grid Self Optimizing Grid takes the existing concept of self healing a step further by highly segmenting our circuits fault TYPICAL SELF HEALING TEAM SUB 1 SUB 2 X X X circuit open point breaker 1 automated devices circuit breaker 2 RESULT: drastic reduction in the number of customers experiencing an outage (when compared to traditional self healing) 12

13 GIP Physical & Cyber Security 13

14 GIP Renewables Integration 14

15 Over the next 10 years, we ll be investing billions across the Carolinas: $6.2B Targeted Undergrounding 16.4 $2.7B Transmission Improvement $4.2B Hardening & Resiliency $1.7B Self-Optimizing Grid $126M Enterprise System Upgrades $656M Advanced Metering Infrastructure $619M Communication Network Upgrades GIP 15

16 Benefits Portfolio North Carolina Early Benefits Integrate and manage renewables Creating jobs and reducing economic disruption from outages SC economic assessment under development End of Plan Benefits 30-40% reduction in unplanned outage events & significant reduction in momentary interruptions 40-60% reductions in SAIDI and SAIFI Reduced business losses Hardened system: major storms Physical and cyber security 16

17 H&R Core Reliability Improvements Reduce Major Storm Impacts TUG Grid Improvement Plan GRID IMPROVEMENT PLAN BENEFITS ADV SYS COMM + SOG State-wide Economic Benefits Business Loss Savings Ambitious 10-year plan to build a better energy future, making the grid smarter, more reliable and September more 2017 secure, while stimulating economic growth 17

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