Mt' Princeton Geothermal LLC

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Mt. Princeton Geothermal LLC

• Colorado Rural Electric Operations and
  Engineering Conference
• Mt. Princeton Hot Springs
• 8 April 2009
• Frederick B. Henderson III, Ph.D.
• Chief Scientist, Mt. Princeton Geothermal LLC

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Mt. Princeton Geothermal LLC

• Geothermal Energy Types
• Geothermal Heat Pumps Shallow
• Hydrothermal, Direct Use - Intermediate
• Hydrothermal, Electricity Intermediate
• Engineered Geothermal (Energy) Systems - Deep

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Baseline Geothermal Electricity

• Why Geothermal Energy Now?
• Only baseline alternative energy
• 24/7 on off
• No air or water pollution
• No storage requirement
• Upfront cost no fuel supply required
• In many US Co-op back yards

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Mt. Princeton Geothermal LLC

• Mt. Princeton Geothermal Project
• First Geothermal Electricity in Colorado
• Stages
• I. Geology, Geophysics, Land Leasing
• Permitting - 2008
• II. Thermal Gradient Drilling Targeting -
  2009
• III. Deep Slim Hole Drilling Pump Tests -
  2009
• IV. Production Injection Drilling and Plant
  Development - 2010

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Mt. Princeton Geothermal LLC

• Regulatory and Permitting
• Thermal Gradient Drilling
• Public meeting and permits DONE
• Exploration Well Exploratory Drilling
• Need Public meetings and permits
• Production and Injection Well Drilling
• Need Public meetings and permits
• Plant and Well Piping Development
• Need Public meetings and permits
• Final Permitting County Planning
  Commissioners

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TOPOGRAPHY Upper Arkansas River Basin
Study Area
Buena Vista
Salida
N
San Luis Valley
Source USGS Seamless In ArcGIS database
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Hot Springs
N
Hot Springs

• Occur Along the Range Front Fault
• Appear at Offset Zones
• Altered Quartz Monzonite
• Temperatures Vary
• 40-82 ºC
• Unique Geochemistry

Mosquito Range
Sawatch Range
J. Dimick, 2007
10 km
http//earth.google.com
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Mt. Princeton Geothermal LLC

• Chaffee County Geothermal
• Potential Order of Energy Potential
• Mt. Princeton HS Highest T and HF
• Cottonwood HS 2nd High Heat, HF?
• Poncha Springs HS 3rd High Heat HF?
• Hecla Junction Warm Springs Warm
• HF ? HF Heat Flow

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Mt. Princeton Geothermal LLC

• Primary Target
• Deep (2,000 3,000) Fracture Reservoir
• Prove sustainable flow of 15,000 gpm for 10 MW
  production
• Deep target for
• 1) hotter temperature 250F
• 2) Prove no surface water table impact

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Mt. Princeton Hot Springs Well Log Study

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GENERALIZED GEOTHERMAL SYSTEM
Hot Springs
PERMEABLE BEDS
IMPERMEABLE BEDS
ALTERED / MINERALIZED
CRYSTALLINE ROCKS
FRACTURE ZONE
COLD WATER FLOW
HOT WATER FLOW
HEAT SOURCE
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GIS Database Based on Chaffee County GIS
database D. Reimer
BUENA VISTA
A
N
Gravity Points
1 Mile
2006 LINE
PROPOSED 2009 LINE
A
SP Resistivity
Mt Princeton H.S.
2008 LINE
Gravity Points
2005 LINE
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A
A
Mt Princeton Hot Springs
Trout Creek
Maxwell Park
HYDROTHERMAL SYSTEM
HEAT SOURCE
LITHOLOGY
STRUCTURE
Fault with Inferred Motion
Fractures
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Total field magnetic intensity vs distance along
2008 CSM seismic line
MPHS
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North Line Gravity
(Dots only!)
High
Low
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SP Response Contours and ArcGis Elevation and
Roads Map
Silica Precipitation causes plugging.
UTM, northing
Orientation of Fracture
UTM, easting
mV
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Low Resolution SP Response
Deer Valley Ranch
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Where to drill?

• Fault Maps after
• Cleaning up the lines

Chalk Cliffs
Drill Location
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• Add SP DC
• Fault Maps after
• Self Potential
• Resistivity

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Mt. Princeton Geothermal LLC

• Stage II Thermal Gradient Drilling
• ? Description and Goal
• ? Thermal gradients and Heat Flow
• ? State heat flow map
• ? AMAX 1973-5 heat flow drilling
• ? Plans for 2009
• ? Permitting
• ? Estimated Cost 100,000

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Baseline Geothermal Electricity

• Thermal Gradient (degrees/distance)?
• X Rock Heat Conductivity
• Heat Flow
• (in mW/m²)?

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AMAX WELLS
AMAX WELLS
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Mt. Princeton Geothermal LLC
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Mt. Princeton Geothermal LLC

• Future Plans and New Technologies
• ? General Plan
• ? Fall 2008 Additional geophysics
• as needed (CSM Proposal) 150,000
• Thermal Gradient Drilling 150,000
• ? Spring Summer 2009 Initial
• deep reservoir drilling 2-4 Million
• ? Fall 2009 2010 Additional production
  and
• re-injection drilling 5 Million
• Surface plant development 30-40 Million

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Mt. Princeton Geothermal LLC

• Geothermal Hot Spring Energy
• The perfect exploration storm
• Exploration I Hot springs transmission lines
• Exploration II Geology thermal gradient ID
• Deep drilling PUC allowed utility development
  funding Extended Tax Credits PPPAs
• New technology UTC-type mid Theat systems
• New markets Utility required profile standards
  20 alternative energy by 2020 11.5 years

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Baseline Geothermal Electricity

• Shallow Temperature Survey (STS)
• Mt. Princeton Geothermal LLC is working with GEO,
  CSM and CGS to develop a STS system in the Mt.
  Princeton-Chaffee County area in order to do a
  state wide first cut of hot springs prospects for
  large thermal indication of producible deep
  targets. Development costs 55,000

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Mt. Princeton Geothermal LLC OPPORTUNITIES FOR
INVESTMENT