Geothermal and Geoexchange Energy in Colorado:Electricity, Heating and Cooling from Inside the Earth
November 2, 2011
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DGS Renewables –Welcome and Series Recap
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May 6, 2010 – Finding the Right Fuel Mix –The Colorado Clean Air-Clean Jobs Act and Other Developments
September 30, 2010 – Waste Not, Want Not: How Colorado Businesses Are Improving Efficiency and Reducing Consumption
December 1, 2010 – Forest Fuel: Woody Biomass Conversion and Related Carbon Sequestration Developments
May 4, 2011 – An In-depth Look at a Western Project - From Planning to Permitting
May 25, 2011 – Alternative Motor Fuels in Our Future - Air Quality and Economic Issues
July 8, 2011 – Sustainability in Action: Colorado Developments Featuring Gov. Bill Ritter
August 31, 2011 – Bringing Small Renewable Energy Projects to Ground – With an Eye Towards Hydropower
Complete Series Materials http://www.dgslaw.com/attorneys/ReferenceDesk/RenewableSeminarSeries.htm
2
Welcome Today’s Speakers/Moderator
• Paul Bony, ClimateMaster
• Dr. Fred Henderson, PhD, Mt. Princeton Geothermal, LLC
• John H. (Hank) Held, Mt. Princeton Geothermal, LLC
• Zach Miller, Davis Graham & Stubbs LLP
• Ben Kass, Moderator – Davis Graham & Stubbs
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DGS Renewable & Alternative Energy Seminar
Introduction to Geothermal Heat Pump Systems
ByPaul Bony
Director of Residential Market DevelopmentClimateMaster
November 2, 2011 4
Introduction to Geothermal
So, what is a GeoExchange (GX, geo thermal, ground source, ground coupled) heat pump system?
Why should consumers, business owners, investors, policy makers, and utilities care about them?
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Buildings Dominate U.S. Energy Use and Carbon Emissions
with Heating, Cooling, and Water Heating being the Largest Contributors
Thermal Loads
Heating 9.2%
Cooling 4.3%
Hot Water 3.8%
Total 17.3%
~ 20% of all U.S. Carbon Emissions6
The Earth is the Source of Heat in Winter…
Outdoor air design temperature:10°F in winter
72°F
60°F
Insulating layer of earth
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…and an Efficient Place to Reject Heat in Summer…
Outdoor air design temperature:100°F in summer
72°F
60°F
Insulating layer of earth
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A geothermal heat pump is connected to a sealed water piping loop buried in the earth near the building
When the warm or cold water exiting the heat pump is pumped through the loop, it is naturally cooled or warmed by the earth surrounding it
60°F
Insulating layer of earth
…using Heat Pump Technology
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Heat Pumps Are All Around Us…
Air conditioners and air-source heat pumps transfer heat from inside houses to the air outside
Refrigerators transfer heat from food into the kitchen
HEAT
HEAT
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Simple Concept
Water moves energy better than air doesWater in the ground provides renewable energy
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Typical water-refrigerant Heat Exchanger used in most GSHP equipment
1 kWh to power the system
3-5 kWh of geothermal energy moved from the earth
4-6 kWh heat
equivalent delivered
Geothermal Heat Pumps
400-600% Efficient 15
Geothermal Heat Pumps
The difference in the before and after system efficiency = carbon emissions savings.300,000 GSHP retrofits could equal the
carbon emissions of a 500 mW coal plant (which serves 500,000 homes!)
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Geothermal Heat Pumps
Geothermal heat pumps produce the lowest carbon dioxide emissions, including all source effects, of all available space-conditioning technologies(EPA, 1993).A GeoExchange system saves more CO2
than an equivalent investment in solar PV.– Based on DMEA’s electric energy carbon load and
weather data.
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Geothermal Heat Pumpsare the Most Efficient way to Convert
Green Energy into Heating, Cooling and Water Heating
Making the most effective use of this precious resource
No carbon electricity = carbon free heating, cooling & water heating
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GX Components
Unit– Flow Controller/pump kit– Hose Kit (package units)– Auxiliary (Electric or Gas) Heat ?
ThermostatLoop/water source
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Basics
Geothermal Heat Pumps are a Scalable Technology
1,300 Sq. Ft. Low Energy Habitat for Humanity Homes-
Oklahoma City
Alta Condos, Washington DC
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Types of GSHP Systems
Outdoor Split Indoor Split
Commercial Roof Top
Upflow & DownflowPackaged
Horizontal Packaged Console
Water-to-Water
Ground Source Heat Pumps Sizes and configurations for every application
Drilling* Pipe LoopInsertion Fusing
Piping LoopsReady forUnit
InstalledHeat Pump* or horizontal, or
surface water
Basics
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Geothermal Heat Pumps
Are a market proven technology.Cut total heating & cooling bills.Tap renewable solar energy from the earth.Can be “bolted” on to a gas heating system to
provide dispatchable renewable energy demand side management.
Have low power requirements that can be provided by zero carbon renewable sources!
Provide immediate positive cash flow with conventional financing!
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Geothermal For Utilities
Geothermal heat pumps offer utilities an excellent tool to:– Obtain significant peak load reduction – Improve load factor– Generate large carbon emission reductions– Meet efficiency, renewable energy and customer
satisfaction goals– With out putting pressure on electric rates (they can
make rates go down)
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Geothermal For Utilities
The equipment keeps getting better– Unit efficiency is reaching 500%
Geo supports load control and peak time pricing managed by the smart grid– Can be added to a gas furnace for 100% load control– Can run on “low” speed or be cycled – New units will self report operating efficiency &
energy savings (a proxy for CO2)– Water to water units can support thermal storage to
move load to match intermittent generation 31
8
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10
11
12
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14
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75 85 95 105
7.5 Ton 11 EER10 Ton 11 EER15 Ton 10.6 EER20 Ton 10 EER
Air Source
Air Source A/C Vs. Ground Source Efficiency
Outdoor Temperature
Energy EfficiencyEER
Ground Source – 14-15 EER
Air Source – 10-11 EER
Air Source – 9-10 EER
Air Source 8-9 EER
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Commercial HVAC System Efficiency
Chillers 1.8 Kw/tonRoof-Top Units 1.2 Kw/tonGSHP’s .9 Kw/ton
GSHP’s vs. Air Source System Efficiency 25% more efficient that packaged equipment50% more efficient than air cooled chillers
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Geothermal Heat Pumps
Over 1.5 million geothermal heat pumps have been installed in the United States & Canada.
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Geothermal Heat Pumps = Jobs
Activity # man days / homeHome Audit & system design 1Home Repair/weatherization 2Utility and loop Locates 0.25Loop Construction 2.5loop tie-in/landscape 0.5Geo system installation 4Back Office - supervision 0.75Other trades 0.25Manufacturing -transport - dist 0.5
Total 11.75
Assumptions 1880 man-days per year94 hours/home
20.0 homes/job5.00 jobs/100 homes 37
GSHP Residential Design Process
Manual “J” building load calculation– Number of heating degree hours– Number of cooling degree hours– Peak heating and cooling loads
GeoDesigner– Equipment sizing– Loop sizing– Customer economic analysis
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Geothermal Market Barriers
High(er) Cost of Installation (1/3- 2X more?)– Depends on the quality of comparison system– The Feds & States are pushing to require only
high quality products & installations– Not counting Federal tax credits & utility rebates
Misguided public policyLimited Consumer EducationLack of Long Term (affordable)
Financing39
Geothermal Heat Pumps
Fed tax credits cover 1/3 of the cost of a residential Geo installation.Federal tax code covers 10% of
commercial Geo installations, plus provides accelerated depreciation (5 years) and efficient building tax credits.– covering, in many cases, over ½ the total
installation cost.– Paybacks under 3 years!
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Utility Geothermal Support
The Wyandotte, Michigan City Council recently approved the creation of a geothermal utility. The general manager of Wyandotte Municipal Services said there are many reasons to be excited about the introduction of geothermal energy, including its heating and cooling efficiency, its affordability, because geothermal helps Wyandotte Municipal Services improve the operation of the electric system and reduce power supply costs, and benefits to the environment. (August 2010) 43
Demand Impacts
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
1 2 3 4 5 6 7 8 9 10 11 12
Max
kW
Month
Monthly Electric Peak Demand Comparison at Same Peak Time
Proposed EER 17.9 Baseline SEER 10
4 ton Geo vs. Conventional –Home Peaks – Denver Colorado
Avg. of 2.1kw savings
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Peak Demand Impacts
Source - Scientific American
Denver CO eQuest whole house
HVAC SystemPeak Time
1/2/10 19:002/5/10 20:003/30/10 18:004/26/10 18:005/31/10 18:006/30/10 18:007/26/10 18:008/16/10 18:009/2/10 18:00
10/16/10 18:0011/6/10 17:0012/8/10 19:00 45
Energy Impacts
5,086 increase in kWh (base is 14,511 kWh)
1,479 decrease in Therms on N Gas
147,900,000 Btu (N gas) * (40% heat rate) = 17,333 kWh generation possible with gas saved
= more kWh than the base case home was using!
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But Colorado Efficiency Policy…
Penalizes Geo systems– Requires net decrease in kW demand (does not
specify Summer Peak)– But also requires 5% decrease in kWh sales
Ignoring the fact that Geo cuts expensive Summer peak demand and frees up enough N Gas to generate an entire home’s electric use! 47
The UK has it Right
Increasing renewable heat is key to the UK meeting its renewable energy targets, reducing carbon emissions, ensuring energy security and helping to build a low carbon economy.
It is for this reason that we are introducing the Renewable Heat Incentive, making renewable heat not just an environmentally sound decision, but also a financially attractive one. This support can help drive take-up of renewables now, stimulate the renewables industry, encourage further innovation and ultimately, bring down the cost of renewable heating. 48
Additional Resources
http://residential.climatemaster.comhttp://www.geo-exchange.cahttp://www.whoknowsthisstuff.com/Video-
Geothermal.htmlhttp://www.geoexchange.orghttp://www.igshpa.okstate.eduhttp://residential.climatemaster.com/
dealers_area/tools.49
Thank You For Your Attention!Questions?
Paul Bony
970-249-8476
If you ever need a hand you can reach me at:
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Mt. Princeton Geothermal LLC
Geothermal Electrical Potentialand Issues for Colorado
Davis, Graham, & StubbsDenver, Colorado, 2 November, 2011
Frederick B. Henderson III, Ph.D., Chief Scientist;John “Hank” Held, Principal, Mt. Princeton Geothermal LLC
Mt. Princeton Geothermal LLC
Definition: Emerging Geothermal State –
►A state with good geothermal energy potential and little or no production
►Focus on hydrothermal potential; EGS10+ years away
►State (Colorado) needs outside investment
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Mt. Princeton Geothermal LLC
Colorado GT Electrical Developments► Mt. Princeton HS. Stage I geoscience & TG
drilling “done”. Drill ready; seeking Stage II reservoir tests funding.
► Poncha HS. Some geoscience done; TG completed September 2011. Drill ready
► Wanuta HS. Some geoscience done. BLM lease sale February 2012
► Raton Basin. Lots of geoscience done.
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Mt. Princeton Geothermal LLCGeneral Plan
► 2007-2010: Completed Stage I geological, and geophysical studies to target deep reservoir (~$1+ M
► Spring – Summer 2011: Stage II permitting and deep reservoir drilling (~$3-5 M) for proven prospect
► Mandatory for Stage III
► Fall 2012 – 2010: Stage III production and re-injection well permitting and drilling; surface plant permitting and development. (~$ 40 M) Could be complicated by BLM lease sale issues and legal delays
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Mt. Princeton Geothermal LLC
Next Steps Mt. Princeton, Poncha1. Magneto-telluric Deep Geophysics 2. Seeking support for deep reservoir test
for sustainable reservoir ID and tests3. Find GT developer for plant and
production4. Obtain final Federal, State and Local
Permits61
Mt. Princeton Geothermal LLC
POTENTIAL CHAFFEE COUNTY GEOTHERMAL ENERGY BENEFITS
• Mt. Princeton HS 10+ MW• Poncha Springs 7-10 MW • Cottonwood HS 5-10 MW• Hecla Junction ?
Total 22-30+ MW 64
Mt. Princeton Geothermal LLC
Primary Barrier to Colorado Hydrothermal Geothermal Development?
Attracting outside (?) Risk Investment for Stage II Deep Reservoir Confirmation Test Drilling
First stated to Geo in 2007
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Mt. Princeton Geothermal LLCPrimary Barrier;
WHY?1. Weak Geothermal Industry: only 4
companies with funds to invest. Merging and investing only in US and Non US “elephant” country; not US Greenfields or “emerging states”.
2. Investment community funding only “proven” projects, not prospects
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Mt. Princeton Geothermal LLC
BARRIERS TO INVESTMENT AND DEVELOPMENT
►Mixed Federal, State, and Local Rules►Repetitive Permitting►Final Local 1041 Issues.►Colorado NOT Incentivized for outside
investment.
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Mt. Princeton Geothermal LLC
COLORADO GEOTHERMAL HOT SPRINGELECTRICAL ESTIMATE
Hot Springs in Colorado (57)
33% @ 10 MW = ~ 200 MW
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Davis Graham & Stubbs LLP | www.dgslaw.com
Zach Miller – PartnerDavis Graham & Stubbs LLP
November 2, 2011
7575
COMMON PERMITS AND APPROVALS REQUIRED FOR
GEOTHERMAL ENERGY PROJECTS
Davis Graham & Stubbs LLP | www.dgslaw.com
GEOTHERMALUNIQUE REGULATORY REQUIREMENTS
• Colorado Geothermal Resources Act• Federal Leasing and 2005 EPAct• BLM/USFS Programming EIS• Federal Underground Injection Control
Program
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Davis Graham & Stubbs LLP | www.dgslaw.com
COLORADO GEOTHERMALRESOURCES ACT
• C.R.S. § 37-90.5-102 (part of water rights statutes)
• Distinguishes “Wet” and “Dry” GT Resources
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Davis Graham & Stubbs LLP | www.dgslaw.com
COLORADO GEOTHERMALRESOURCES ACT (cont.)
• GT Resources Associated with “Geothermal Fluid” (Water, Brine, Steam) is a “Usufructrary” Right Only– Acquired by use in accordance with statute– Not an incident of ownership of attached land
• GT Resources from “Hot Dry Rock” (with no associated fluid) is an incident of ownership of overlying land
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Davis Graham & Stubbs LLP | www.dgslaw.com
COLORADO GEOTHERMALRESOURCES ACT (cont.)
• Need SEO Drilling Permit to construct GT exploration, production or reinjection well
• Need SEO Water Well Permit for water right for GT well
• Water Court Process and Criteria also apply, as modified (e.g., re injury) by Geothermal Resources Act
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Davis Graham & Stubbs LLP | www.dgslaw.com
SEO GEOTHERMALWELL REGULATIONS
• 2 CCR 402-10• Well Construction Standards• Contractor Requirements• Permit Criteria• “Material Injury” Standard: “Any Diminution
or Alteration of Quantity, Temperature orQuality” of an Existing Right PrecludesNew Right
• Extremely Strict and Limiting Standard
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Davis Graham & Stubbs LLP | www.dgslaw.com
BLM/USFS GEOTHERMAL PEIS
• Programmatic EIS on GT Leasing on Federal Lands in 12 Western States
• Final PEIS Issued in 2008• Governs Leasing, Mitigation and
Reclamation on Federal Lands• Unique Provisions for Terms, Royalty
Calculation, Etc.
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL LEASING2005 ENERGY POLICY ACT
• EPAct Required Amended BLM Geothermal Leasing Rules
• Final BLM GT Leasing Rule – 5/2/0743 CFR Pt. 3000, 3100 and 3200
• DOI Lands and USDA Lands with USDA (USFS) Approval
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL LEASING2005 ENERGY POLICY ACT (cont.)
• 2007 GT Lease Sales in Utah, Idaho, California, and Nevada
• Competitive, Non-Competitive, and “Direct” Leasing Available
• Primary Term: 10 YearsProduction Extension: Up to 35 Years
• MMS GT Valuation Rule– 30 CFR Pt. 202-218– Calculation of GT Royalties and Fees
• 2007-2011 and 1/2 Lease Sales in Nevada
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL PERMITTING ANDAPPROVAL REQUIREMENTS
• NEPA – EIS or EA for “Major Federal Actions”– Federal Public Lands, 404 Permit, WAPA Interconnect– Evaluate Impacts, Alternatives, Mitigation– Public Participation / Comments– Potential Major Delays and Citizen Suits
• Bird / Wildlife Issues– Endangered Species Act
• Sec. 9: Shall not “Take” a Listed T&E Species• Sec. 7: Federal Agencies “consult” with U.S. Fish & Wildlife Service• Sec. 10: “Incidental Take” Permit
– Bald and Golden Eagle Protection Act– Migratory Bird Treaty Act
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL PERMITTING ANDAPPROVAL REQUIREMENTS
(cont.)
• Historic Preservation Act– Triggered by “Federal Undertaking” (broad!)– Protect or Document Covered Resources– Beware of Native American Sacred Sites– Time Consuming Consultation Requirements – Potential Delays or Relocation
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL PERMITTING ANDAPPROVAL REQUIREMENTS
(cont.)
• Section 404 – Clean Water Act– COE Permit for “Discharge of Fill Material”– Into Regulated “Waters of the U.S.”– “Jurisdictional Waters” Now Murky– Includes Wetlands, Streams, Ponds, Drainages– Can Trigger NEPA, Citizen Suits
• SPCC Plan under OPA– Spill Plan for ASTs for Oil– If AST > 1,320 Gallons
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Davis Graham & Stubbs LLP | www.dgslaw.com
UNDERGROUND INJECTIONCONTROL PROGRAM
• Safe Drinking Water Act Program• Regulates Underground Injection of
Regulated Fluids (including Water)• Class V (misc.) Wells in Colorado
Permitted by EPA• Covers UG Injection to Extract GT Energy• In Addition to SEO Drilling Permit• New Territory in Colorado
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Davis Graham & Stubbs LLP | www.dgslaw.com
FEDERAL PUBLICLAND CONCERNS
• BLM, USFS, National Grasslands• Triggers NEPA, NHPA and ESA / Sec. 7• Consistency with Forest and BLM Res.
Management Plans• Need for FLPMA Title V R-O-W or SUP• Use Restrictions or Delays• Potential Citizen Suits• Programmatic EISs
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Davis Graham & Stubbs LLP | www.dgslaw.com
OTHER STATE AND LOCALPERMITTING REQUIREMENTS
• County Conditional or Special Use Permits• Colorado Storm Water Permit (construction) – WQCD• Colorado Dust Control Permit (construction) – APCD• Colorado Highway Access and Encroachment Permit –
CDOT• Colorado Electrical Permit – State Electrical Board• Colorado Water Well Permit – (for Office, etc.) – SEO• Building Permits – County• Septic System Permit – County
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