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Randy Huston

Director, IT Infrastructure and Smart Grid

May 16, 2011

SmartGridCity™ Implementation

Overview

Ministry of Power and

Ministry of New and Renewable Energy

Government of India

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About Xcel Energy

Northern States Power Company- Minnesota

Public ServiceCompany

of Colorado

Southwestern Public Service

Northern States Power Company- Wisconsin

3.4 million electricity customers

1.9 million natural gas customers

Traditionally regulated

Renewable Leader:• Largest Wind Energy

Provider in US

• 4th Largest Solar Provider in US

• On track for 30% of Energy from Renewables

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Be a responsible environmental leader, while always focusing on our core business —

reliable and safe energy at a reasonable cost.

Advanced Technology

Energy Efficiency

Business Innovation

Our Vision

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An exploration of smart grid tools

in a real-world setting.

Operational Efficiency

Reliability

Conservation

Renewable Power

What is SmartGridCity?

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Create a demonstration site

Build skills and experience

Prove (or disprove) hypotheses

Evaluate benefits

Leverage talent

Goals

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New IT Infrastructure

Communication Network

Real-Time Grid Monitoring, Control

Visualization & Reporting

Smart Substation Smart Metering Smart Customer

Solutions

SmartGridCity Scope

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Field Infrastructure: Complete

4,721 transformers monitored

23,000 smart meters installed

4 substations automated

4 feeders automated

IT Infrastructure & Systems: Complete

All IT systems operational

All security infrastructure installed and tested

Data Center upgraded

Wide Area Networks complete

Virtual Power Plant operational (ready for devices)

Evaluation Phase: Report Being Finalized

Status

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Key Challenges IT Challenges Managing increasing

amounts of data Leveraging existing systems Extracting additional value

from data Changing communications

requirements IT / Business convergence Network security Evolving technology

markets HAN, in-home device

providers Regulatory policy

Security and privacy concerns

Distribution Challenges Distribution loss reductions

Load balancing

Phase balancing

System efficiency opportunities

Distribution voltage optimization

Changing processes and budgets

Customer-facing Challenges Smart meters Changing customer expectations New means of customer interaction New Pricing & DSM strategies In-home energy management

devices Distributed Energy Resources

including PV and Plug-in Hybrid Electric Vehicles

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What does all this mean?

Data highways and data storage systems will have to be designed to handle much larger volumes

Existing applications will have to be shielded from the higher data volumes or replaced. Complex Event Processing can help resolve this issue smoothing investment cycles.

It is possible although presently very difficult to interface to multiple in-home vendors in a safe and consistent manner.

Customer Relationship Management Systems must become part of the standard environment.

Network strategy and standards are foundational to and Smart Grid deployment.

There is no one way to create value or prepare for the future.

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Thank You