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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [PG&E Smart Grid Discussion] Date Submitted: [09 May, 2008] Source: [Chris Knudsen, Director, Technology Innovation Center] Company [Pacific Gas & Electric]

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [PG&E Smart Grid Discussion]

Date Submitted: [09 May, 2008]

Source: [Chris Knudsen, Director, Technology Innovation Center] Company [Pacific Gas & Electric]

Address [77 Beale, San Francisco, Calif.]

Voice:[415-973-4418], FAX: [415-973-0802], E-Mail:[]

Re: []

Abstract: [To provide information regarding PG&E efforts in the SmartGrid area and views about the need for a standard]

Purpose: [Contribution to neighborhood Area Networks Interest Group (IG-NAN)]

Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

Chris Knudsen, PG&E

about pacific gas and electric company
Energy Services to about 15 M People:

5.0 M Electric Customer Accounts

4.1 M Natural Gas Customer Accts

70,000 square miles with diverse topography

~20,000 Employees

Regulated by the California Public Utilities Commission (CPUC)

About Pacific Gas and Electric Company
smartmeter program highlights
SmartMeterProgram Highlights
  • Largest planned implementation of AMI technology in the U.S. to date – 10.3 million meters
    • $1.7 B in funding (CPUC, July 2006)
    • 5 year deployment: 2006 – 2011
  • The program will pay for itself over its 20 year useful life through operational savings, demand response, and energy efficiency
    • First critical peak pricing program for residential customers in the nation
  • The SmartMeter technology mix will evolve to take advantage of rapidly evolving technologies
    • We are moving toward our vision of the Smart Electric Grid
  • Technologies deployed through the SmartMeter program establish a platform for future innovations that will benefit our customers, our operations, and the State of California
smart energy web vision

Backup generation

Grid 2 Vehicle / Vehicle to Grid

Grid appliances

Distributed storage


T&D Automation

Load limiting

Fault prediction


Load control

Energy mgmt systems

Solar monitoring & dispatch

Distributed generation

Outage management

Interval billing


In home displays

Power quality management

Generation / supply


Usage / demand


Data storage









RF Mesh

Home Area Network (HAN)

Broadband WWAN

3G Cellular

Cap banks










Smart Energy Web Vision

SmartGrid components



applications –

“Smart Energy




Computing /






Energy information network




pg e smartmeter program details
PG&E SmartMeter Program Details
  • Automated meter reading for all customers
  • 10 Million meter upgrades
  • A network to collect meter reads remotely and communicate with the meters and into the home
  • Frequent meter reads - daily for gas, hourly or 15 minute interval for electric
  • Enables demand response programs
  • Enhanced capabilities over time
coverage requirements
Coverage Requirements

Total Meters / Square Miles

  • 90% of our meters are deployed within only 15% of our territory but…
  • Coverage probability must be 100%, so…
  • The less than 10% of our meters that are spread across 85% will drive our technology choice

The technology choice must be robust in

the dense areas and still be flexible enough to cover the rural areas

capacity requirements
Capacity Requirements
  • Capacity requirements are in 10’s of kbps. There is no need for a broadband system
  • Traffic is raw data, no or very little formatting overhead
  • Distributed processing in meters can further reduce the traffic needs of the NAN


home area network and smart grid
Home Area Network and Smart Grid
  • SmartMeter Upgrade includes two separate RF Networks
    • RF Mesh Network to communicate from Meter to PG&E back office
    • Home Area Network to communicate Meter Data into home enabling home automation and energy management
  • Home Area Network enables:
    • Energy management systems/Home automation including policy-based control of HVAC and smart appliances
    • Integration of distributed micro-generation such as solar PV, Wind and PHEVs
  • Current and Future Potential DR applications include:
    • Load shifting/shaping
    • AC Cycling
    • Smartcharging
    • Load limiting

Home Area Network Concept

HVAC, IP-enabled appliances and distributed generation will all be tied together through an integrated EMS


IP-based RF Mesh

pg e 2006 annual usage
PG&E 2006 Annual Usage

Peak Load

July 25 @ 1700 hours 20,883 MWs



pg e s 2006 load duration curve
PG&E’s 2006 Load Duration Curve

The top “50 Hours” represent 0.6% of the total hours in a year

top 100 hours
Top 100 Hours

But it Represents 10% of Total Generation or 2,200 MW

Eliminating the top 10% of energy usage through efficiency programs and demand response is worth over $100M annually

smartmeter program benefits
SmartMeter Program Benefits
  • Customer Benefits
  • Greater convenience - no need to unlock gates or secure dogs for monthly meter reads
  • Reductionindelayed, inaccurate and estimated bills
  • Voluntary pricing plan options that empower customers to shift or reduce energy usage when demand is at its highest (near term future)
  • Online access to energy usage informationthat enables customers to better understand their usage and manage their bills (near term future)
  • Improved outage detection (longer term future)
  • Operational Benefits (PG&E)
  • California Benefits
  • Reduced operating costs
  • Lower power purchase costs resulting from reduced peak loads
  • Improved billing efficiency
  • Improved power outage restoration
  • Enhanced grid reliability
  • Avoided rotating outages
  • Less reliance on older, less-efficient power plants to meet peak demand
smartmeter upgrade provides enabling communications layer
SmartMeter Upgrade Provides Enabling Communications Layer

Cumulative benefits

Phase 3 – Future

Enable future services

and foster innovation

Phase 2 – Near term

Transform existing services using

advanced communications capability

  • Customer Products and Services
    • Automated energy management system
    • Real-time pricing
    • Energy trading
  • Utility Operations Benefits
    • Micro-grids
    • Fault prediction
    • Smart Grid
    • Distributed battery
    • Vehicle to Grid
    • PHEV grid ancillary services
    • Other distributed generation (e.g., fuel cell technology)

Phase 1 – Today

Integrate existing services to new platform

  • Customer Products and Services
    • Prepay billing options
    • In-home displays
    • Basic energy management system
  • Utility Operations Benefits
    • Confirmed load control
    • Distribution automation
    • Advanced outage management
    • Load limiting
    • Distributed storage and generation
    • Backup generation
    • Solar generation output
    • PHEV smartcharging
  • Customer Products and Services
    • Interval rates
    • Net metering

Utility Operations Benefits

    • Meter reading
    • Limited disconnect
    • Basic load control
    • Limited SCADA
    • Basic outage management

SmartMeter Upgrade network seamlessly exchanges information between utility assets