Smart GridSmart Grid

Our MissionOur Mission

Seattle City Light is dedicated to exceeding our customers’ expectations in producing and delivering environmentally responsible, safe, low cost and reliable power.

The Smart Grid DefinitionThe Smart Grid DefinitionSmart Grid is a portfolio of systems and technologies designed to provide operational, financial and environmental benefits by integrating modern energy, communications and information technologies with electrical generation, power delivery and consumer electrical systems.

Smart Grid does not emerge from a single rollout of a revolutionary technology, but from strategic planning and initiatives all aimed at a long-term vision supported by a technology and customer focused organization.

Smart Grid Functions (DOE)Smart Grid Functions (DOE)1. Motivating - Enable Active Participation by

Customers 2. Accommodating - Accommodate All

Generation and Storage Options 3. Opportunistic - Enable New Products,

Services, and Markets 4. Quality-focused - Provide Power Quality for

the Digital Economy 5. Efficient - Optimize Asset Utilization and

Operate Efficiently 6. Intelligent - Anticipate and Respond to System

Disturbances 7. Secure - Operate Resiliently Against Attacks

and Natural Disasters

Generation Transmission / Substations Distribution System Customer End Systems

Seattle City Light Smart Grid VisionSeattle City Light Smart Grid Vision

Sensors CapacitorsSwitches

Sensors CapacitorsSwitches

Substation Modernization Distribution Automation Advanced Meter Infrastructure AMI

Smart Substation Energy Delivery Optimization

Advanced Distribution Automation

Distributed Generation

Outage Management System

Work and Asset Management SystemMeter Data Management System

Energy Management System

Distribution Management System

Customer Information System

Energy Storage

Home Energy Management

Systems Electric Vehicles

Demand Response

IT S

yste

ms

Fiber Optic Backbone Field Smart Grid Communications

Smar

t Grid

Sys

tem

sEl

ectr

ical

Pow

er S

yste

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Data Integration

Mobile Workforce Management System

Generation Automation

Plug-In Electric Vehicle

Geographic Information System

Why Automation?• Improve System Reliability

• Maximum Use of Assets

• Improve Efficiency of Operations

• Provide a Safer Operation Environment

• Visibility

Substation Modernization

Standard practice is to implement automation for new major substations

Substation Modernization (cont.)

Inventory:

• ~ 422 Breakers

• ~ 54 Transformers

• ~ 5000 Relays

Old Transformer

Breaker

New Transformer

New and Old Relays

Distribution Automation Plan

• Monitor Equipment– Line switches– Transformers– Line Loading– etc

• Automate the most critical circuits for enhance reliability

• Automate equipment for critical loads

Benefits• Reduces time to troubleshoot and isolate problem

• Getting real-time information to make quicker decisions

• Remote Control for faster restoration

• Avoid the system collapse or cascade

• Remote switching versus manual switching

• Optimize asset utilization and efficiency

Substation Modernization is a foundation to Smart Grid

Our Current Metering Infrastructure408,000 meters with an average age of 30 years

0100002000030000400005000060000700008000090000

< 10 10 to20

20 to30

30 to40

40 to50

50 to60

60 >

Meter Age

Meters by Age in Years

Why We Need New Meters• The current electro-mechanical

meters are obsolete and out of production

• As meters age, we lose revenue by under-measuring usage

• On site meter reading has high labor costs

• The old meters are not “Smart Grid capable”

The Solution: Advanced Metering Infrastructure (AMI)

Replaces 408,000 aging meters with new digital metersAdds a two-way communication

system with immediate benefitsProvides new powermanagement capabilities

AMI Goals Improve Customer ExperienceOperate a safe and environmentally

responsible metering systemProvide “Real Time” usage informationEnhance Outage Management SystemSupport future Smart Grid

capabilities

AMI BenefitsIncreased customer satisfactionFaster outage responseFlexible billing/rate optionsReal time information to support

conservation effortsReduced carbon foot printReduced labor and

operational costs

AMI Options• Ideal: Full Deployment commencing

in 2011 over a 5 year period.• Delayed Deployment with a small

ramp up in 2011-2012 with full implementation complete within 7 years.

• Accelerated Meter Replacement Only without communication system for AMI

• Status Quo: Replace obsolete meters with digital meters at current level of capital spending

AMI – Worth the Cost•We will have to replace all of our meters•For an additional 15%, we gain the benefits of AMI•The project has long term benefits

Overall AMI Project Costs

Meter Replacement ($86.4M)Other AMI ($14.6M)

AMI – Better Return On Investment

AMI vs Meter Replacement

(30,000,000)

(25,000,000)

(20,000,000)

(15,000,000)

(10,000,000)

(5,000,000)

0

5,000,000

10,000,000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Project Year

Net

Ben

efit/

Cos

t

AMI ProjectMeter Replacement

Initial higher costs

Long term higher benefits

AMI Project Plan

Two year ramp up (2011-2012) for pre- project preparation

Five year project implementation (2013 – 2017)

Use in-house labor as much as possible Integrate with othertechnology projects