Enhanced Geothermal Systems

in the Geothermal

Technologies Program

Geothermal-biz.com Webcast

July 29, 2004

Temperature at 6 km

°C

°C

°C

Present and Near-Term Capacity

Installed:

About 2600 MWe (electric)60 MWt

2300 MWe

28 MWt

30 MWt

54 MWt

40 MWe200 MWe

102 MWt

22 MWtMore Than 20 MW

Less than 20 MW

30 MWe

185 MWeSalton Sea

(under development)

100 MWeGlass Mountain

(under development)

40 MWeSteamboat

(under development)

10 MWeRaft River

(under development)

25 MWeSulfur Hot Springs

(under development)30 MWeOrmat

(under development)

400 MWe under development (electric)51 MWt

69 MWt

114 MWt

Over 600 MWt (heat)

Geothermal Domains

Saturation

Hydrothermal Reservoir

Enhanced Geothermal

System

HighTemperature

Permeability

Enhanced Geothermal System

EGS Benefits

• Expanded resource

• Increased productivity

• Extended lifetime• Siting flexibility• Sizing flexibility• Environment

Geothermal Technologies Program

The Program’s mission is to work in partnership with U.S. industry to establish geothermal energy as an economically competitive contributor to the U.S. energy supply.

• Reduce the levelized cost of hydrothermal development to less than 5 cents/kWh by 2010

• Increase the economically viable geothermal resource to 40,000 megawatts by 2040

• Decrease the levelized cost of electricity from Enhanced Geothermal Systems to less than 5 cents per kWh by 2040

Strategic Program Goals

FY04 Structure FY05 StructureGeothermal Technology Geothermal Technology

Geoscience and Supporting TechnologiesCore ResearchUniversity ResearchEnhanced Geothermal Systems

Exploration and Drilling ResearchDetection and MappingInnovative Drilling Subsystems

Energy Systems Research and TestingGeoPowering the WestAdvanced Heat and Power Systems

Technology Development

Resource Development

Enhanced Geothermal Systems

System Development

Technology Application

Verification

Deployment

Program Organization

Geothermal Budget

Funding Profile ($ thousands)

8,0006,6805,915- Enhanced Geothermal Systems

4,0003,5005,250- Technology Verification

25,80025,50828,390Total2,0504,1034,484- Deployment

6,0507,6039,734Technology Application8,5508,2258,578- Systems Development

3,2003,0004,163- Resource Development19,75017,90518,656Technology Development

FY2005 RequestFY2004FY2003

Enhanced Geothermal Systems Program

Strategy:• Conduct research and development on EGS

technologies• Apply technologies in partnership with industry at

selected field locations

Goal: Decrease the levelized cost of electricity from EGS to less than 5 cents per kWh

Accomplishments to Date: Technical feasibility demonstrated at various sites

Status:• Research grants awarded• Three cost-shared projects underway

EGS R&D Announcement

Topic Areas• Techniques and tools for fracture mapping and

analysis • Techniques and tools of monitoring fracture

propagation, fluid flow, and heat transfer (including real-time monitoring)

• Techniques to create, characterize, stimulate and evaluate fracture(s) and fracture networks

• Subsurface processes affecting fluid flow

DE-PS36-04GO94001

Research

• Reservoir Characterization & Management• Remote Sensing and Imaging Tools• Exploration Models• Resource Analysis• Thermoelastic Hydraulic Fracture Design• Production and Injection Strategies• Permeability• Tracers

EGS Researchers Recently Selected

• Duke University• Pinnacle Technologies• SAIC• The Pennsylvania State University • University of California at San Diego• University of North Carolina at Chapel Hill• University of Utah – Energy and

Geoscience Institute

EGS Site Types

I. Productive Hydrothermal FieldII. Unproductive (or undeveloped)

Hydrothermal FieldIII. Non-hydrothermal Field

Coso ProjectDescription:Create and test an EGS through thermal and hydraulic stimulation. Understand the creative process of thermal and hydraulic stimulation.

Desired Outcome:Ultimately enhance the current geothermal power production by 20MWe.

Budget:DOE - $6,000,000Partners - $2,000,000

Partners:Coso Operating Company (COC) , United States Geological Survey (USGS), Geomechanics International (GMI), Kansas State University (KSU), Halliburton Energy Systems, TerraTek, Quantec, Q-con

Desert Peak East Project

Description: Define important technical and economical parameters crucial to cost-effective commercial development of EGS Geothermal Power Plant.

Desired Outcome:Create and test an EGS reservoir at Desert Peak East that is capable of sustaining the operation of a 3-5 MWe power.

Budget:DOE - $1,308,330Partners - $327,083

Partners:ORMAT, GeothermEx, UNR, EGI,Pinnacle Technologies

Geysers/Glass Mt Project

Description: Apply known and new well permeability enhancement techniques to reduce the number of wells.

Desired Outcome:Develop a reservoir that is capable of producing up to 49MW EGS geothermal electrical power.

Budget:DOE - $445,000Partners - $287,687

Partners: Calpine & Halliburton

UniversitiesUniversitiesUniversities

EGS ProgramProposed Management Organization

R&D Manager

DOE - EGS Manager

Projects Manager

Expert Panel

EGI/Caithness CalpineUniversitiesNational Laboratories

Ormat/ Geothermex

ProgramManager

2004 2005

Planning and Mgmt

Research and Development

Field Projects

EGS ProgramNear-Term Milestones

March 20041) Planning workshop

November 20041) Coso massive stimulation

October 20043) NAS/NRC study

September 20057) Draft EGS Multi-Year Plan

February 20041) EGS Solicitation

March 20053) Desert Peak Phase 2 decision

December 20042) Aidlin injection testing

Field Projects

September 20043) Draft seismicity white paper

May 20042) R&D awards

Research and Development

April 20056) Draft Roadmap

February 20055) Peer Review

November 20044) EGS management team

August 20042) Roadmapping workshop

Planning and Management

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