Overview of the U.S. Electrical System & the Bonneville Power

Administration (BPA)

-2007-

US Electrical System Organization

US Electrical System

Actual System Interconnections

Western US System

McNary

Dworshak

Anderson Ranch

Palisades

Ice Harbor

GrandCoulee

Revelstroke

LowerMonumental

LittleGoose

John Day

The Dalles

Minidoka

Lower Granite

Chandler

Rosa

Albeni Falls

BlackCanyon

Boise Diversion

Mica

Keenleyside

Duncan

BPA Service AreaColumbia Basin

Federal Dams:

Canadian Dams

Montana

Wyom

ingUtahNevada

California

Oregon Idaho

WashingtonNon-Federal Dams

Chief Joseph

Priest Rapids

Wanapum

Rock Island

Rocky Reach

Wells

Hells CanyonOxbow

Brownlee

Swan Falls

C J Strike

American Falls

Bliss

Upper SalmonFalls

BPA Transmission Grid

Libby Hungry Horse

Bonneville

Green Springs

Lost Creek

Hills Creek

Lookout Point

CougarDexter

Green PeterFoster Detroit

Big Cliff

Corps of EngineersBureau of Reclamation

CanadaU.S.A.

Columbia River Basin & BPA Service Area

• WHAT IS BPA? Self-financed federal

agency within Department of Energy

Markets power at cost from 31 federal dams and 1 nuclear plant – 35% of electricity used in Pacific Northwest

Markets transmission services – owns 75% (15,440 miles) of the high-voltage lines in Pacific Northwest

Protects, mitigates & enhances fish & wildlife in the Columbia River Basin

300,000 square mile service area – includes WA, OR, ID, & Western MT

$3.3 billion in annual revenues

BPA: General Information and Structure (2007)

BPA established 1937

Pacific Northwest population 11,950,509

Transmission line Circuit miles) 15,442

BPA-owned substations 237

Employees (staff years) 2,923

BPA is organized into three business units:Power Business Services: Approximately 250 employees. BPA markets the power generated at 31 Federal dams, one non-Federal nuclear plant at Hanford, Washington, and some non-Federal power plants, such as wind projects.

Transmission Business Services: Approximately 1,600 employees. BPA owns and operates 75 percent of the Pacific Northwest’s high-voltage electric grid. The grid includes more that 15,000 circuit-miles of transmission line and 235 substations. It carries a peak load of about 30,000 megawatts of electricity and produces about $700 million a year in transmission revenues.

Corporate: Approximately 1,100 employees. Includes Finance; Environment, Fish and Wildlife; Energy Efficiency; Customer Support Services; General Counsel; Planning and Governance; and Risk Management.

BPA History