Smart Grid City:A blueprint for a connected, intelligent grid community

Dennis StephensDirector, Utility Innovations and

Smart Grid InvestmentsOSI User’s Conference

September, 23 2008

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Drivers for change Grid reliability

Aging assets, heightened demands

Environment: Global climate change Legislative mandates for green power

Energy Security: Homeland security Dependence on foreign oil

Customer Choices: Growing needs and expectations Desire for greater flexibility and options

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The Market – other efforts

Smart meters

Demand side management and distributed generation

Superconducting cables

Energy storage devices

Intelligent home/Smart appliances

Automatic power power restoration and correction for voltage, frequency and power factor issues

Renewable energy sector growth

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Xcel Energy - Smart Grid vision & approachFirst to present a comprehensive solution

Broad portfolio of new technologies & projects Encompassing the entire power pathway Fuel source to end-use consumer

Collaborative model Shared risk, shared rewards

Focus on environmental aspects Uniquely positions Xcel Energy

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AccentureCurrent GroupGridPointOSI SoftSchweitzer Engineering LaboratoriesVentyxXcel Energy

imagine. inspire. innovate.

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SmartGridCity™ - Boulder, Colo. “An international showcase of smart grid

possibilities… a comprehensive demonstration of an intelligent grid

community”

Test technology Integrate smart grid

portfolio of projects Prove benefits

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Boulder’s Key Strengths Ideal size (50,000 customers/meters)

Ideal geographic location (easy access to needed grid components)

Ideal Smart Grid consumers: Web-savvy, early adopters Environmentally aware

Collaborative opportunities with: University of Colorado National Center for Atmospheric Research National Institute of Standards and Technology City leaders

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SmartGridCity™ Involves the entire energy pathway from the power source to the home

and all points in between Rich in IT High-speed, real-time, two-way communications Sensors enabling rapid diagnosis and corrections Dispatched distributed generation (PHEVs, wind, solar) Energy storage In-home energy controls Automated home energy use

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Smart House

Plug-in hybrid electric cars

Added green power sources

Smart thermostats, appliances and in-home control devices

Real-time and green pricing Signals

High-speed, networked connections

Customer interaction with utility

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We will need to collect, store, analyze and act on information

How we might use PI:Commercial Operation

Virtual Power PlantSubstation

Condition Based AnalysisDistribution

System Status and ControlCustomer

Demand Response/Distributed Generation

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Learn more

xcelenergy.com/smartgrid