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(a) Summer capacity adjusted for losses incurred outside main system. (b) Steam generation using oil fuel. (c) Combustion turbine, combined cycle and fuel cell units using distillate oil fuel. (d) Other includes purchases/exchanges and firm co-generation.

FACT SHEET

3 MW SCE WIND TURBINE DEMONSTRATION

Location:

Description:

Cost:

Schedule:

Future Plans:

8 miles northwest of Palm Springs, near
Devers Substation.

A 3 MW Schachle wind turbine is being
constructed to demonstrate technical and
economic feasibility as a necessary step
toward commercial implementation.

Size: 190 feet to top of blade arc,
3-blade rotor, rotor span is
165 feet.

Power:
Energy:

3 MW @ 40 mph wind speed.

6,000,000 kwh/yr; 800-1000
customers, 10,000 BBL oil
saved.

$2,000,000 total:

$1,000,000 WTG, $1,000,000

for site, interface, design review, test
equipment.

Unit operation: August 1, 1979.

One to two-year test program beginning
August 1978 with first year cost of
$100,000; $30,000 to be contributed by
WEST as participants in the testing
program.

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A 10-Megawatt Solar Thermal Central Receiver Pilot Plant

PROGRAM
DESCRIPTION:

LOCATION:

UNIT SIZE:

UTILITY

RESPONSIBILITY:

GOVERNMENT

A 10-megawatt pilot plant, scheduled to be completed
in 1981, will be the nation's first central receiver
electric generating station powered directly by solar
energy and connected to a utility grid. Edison, the
Los Angeles Department of Water and Power, and the
California Energy Commission were jointly selected
by the U.S. Department of Energy to join in a
cooperative effort to build and operate the pilot
solar facility.

The pilot plant will utilize the central receiver
concept. Sunlight is reflected off a group of
sun-tracking mirrors (heliostats) to concentrate
on a tower-mounted receiver/boiler that produces
steam to generate electricity. Heat storage is
used to extend the power plant's usefulness
through early evening hours.

Located near Southern California Edison's Cool
Water Generating Station in Daggett, approximately
12 miles southeast of the City of Barstow.

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Pole line from pilot plant to Cool Water switchyard Electric energy transmitted through Edison system 20% of output exchanged to Los Angeles DWP

Furnish steam turbine-electric generator and auxiliaries 10-megawatt net electric output

Conventional evaporative cooling towers

Operate and maintain the entire pilot plant
Five-year test period

Engineer Visitor's Information Center

Design and construct the solar portion of the pilot plant RESPONSIBILITY: including:

Heliostats (sun-tracking mirrors)

Approximately 1600-1800 required

Multi-faceted glass mirrors of approximately
450 square feet each

54-948 O

- 80

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Boiler tubes mounted around entire circumference
Once-through to superheat water circuitry

Thermal storage

Heated oil stored in tanks

Tanks also filled with gravel and rocks

Master Control System

Interface control system to tie turbine-generator, heliostat, receiver, and thermal storage systems together

Construct Visitor's Information Center

Dissemination of technical information

Review of siting procedures

RESPONSIBILITY: Coordinating efforts of public agencies

OWNERSHIP.:

PROJECTED
COSTS:

ESTIMATED
WORK FORCE:

WATER USAGE:

PROJECT
SCHEDULE:

Solar portion: DOE

Turbine-generator portion:

Edison-80%; DWP-20%

Solar portion: approximately $108 million
Turbine-generator portion: nearly $15 million

Up to 300 workers during peak construction period.
The operating personnel required are estimated
to be 30.

Approximately 220 acre-feet of water per year

for pilot plant cooling and heliostat washing. Water required for pilot plant will be diverted from that presently used for other Edison operations. No additional pumping is contemplated.

Information Center Groundbreaking
Start Site Construction

Information Center Completed

Turbine Roll and Initial Operating Date

TESTING PERIOD: 5 years

PILOT PLANT
OBJECTIVES:

Revision No. 7
April 20, 1979

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To establish the technical feasibility of a solar
thermal power plant of the central-receiver type
including repowering applications.

To obtain sufficient development production and
operating data to indicate the potential overall
economics of commercial power plants of similar
design.

To determine the environmental impact of solar
thermal central receiver plants.

Approved by:

Hallowin kay

Project Director

U.S. Department of Energy

J. M. Reeves

Deputy Project Director

Southern California Edison Company

Participants:

Location:
Description:

Background:

Concept Advantages:

Current Status

as of April 1, 1979

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The Windfree wind turbine uses large rotating barrels instead of blades to intercept energy in the wind and cause rotation of a main power shaft. The machine makes use of the 'magnus effect", which has been adapted to a wind turbine developed by Windfree Inc. under contract with SCE. It requires an electrical system capable of constant frequency under variable RPM conditions. The prototype 100 foot wind turbine would be rated at 600 kw under 40 mph wind conditions.

Studies and test data have shown that a Magnus effect wind turbine, although less efficient than conventional propeller types, should have lower first and O&M costs and should have higher capacity factors (would keep operating under higher wind velocity conditions).

A joint Windfree/SCE proposal has been submitted to the Solar Energy Research Institute (SERI) for the construction and testing of a 55' magnus effect wind turbine at Edison's wind test site. It is expected that an award will be made by SERI in June 1979.

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