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The Koroit Geothermal Project Peter Barnett Managing Director Hot Rock Limited 10 Market Street, Brisbane,  www.hotrockltd...
Whilst this document and presentation is based on the information from sources which are considered reliable, Hot Rock Lim...
What is Geothermal Energy? <ul><li>Geothermal means earth-heat.  </li></ul><ul><li>It is related to the thermal energy of ...
Where Does Geothermal Energy Come From? <ul><li>Geothermal energy largely derives from two primary sources, primordial hea...
Volcanic geothermal systems <ul><li>The highest quality geothermal resources are volcanic systems, limited to locations wi...
Volcanic geothermal systems <ul><li>generally have very obvious surface expression </li></ul><ul><li>convective upflow / o...
Volcanic geothermal systems  Mature liquid-dominated andesitic stratovolcano geothermal system with exploitable outflow  (...
Other geothermal system types – “HSA” and “EGS” No commercial operations Operating for over 25  years Operating for nearly...
Current world wide geothermal power generation capacity  is 11,000 MWe http://www.globalenergymagazine.com/?p=1658 , 20100...
Geothermal Exploration in Australia  <ul><li>HSA Geothermal </li></ul><ul><ul><li>Otway Basin </li></ul></ul><ul><ul><li>G...
Australian HSA and EGS geothermal - “blind” plays HSA Play, Otway Basin 550,000PJ  of “inferred geothermal resource” decla...
But clearly recoverable geothermal energy is present at depth in these ‘blind’ plays Recent flow testing of  Salamander-1 ...
The Koroit geothermal resource is an “HSA” geothermal system, located in the Otway Basin Base Graphic: Courtesy of Gescien...
A geological cross section through the Koroit geothermal system
Koroit  is a large geothermal resource In-place stored heat 1: Indicated  Geothermal Resource 47km 3 7,600PJ Inferred  Geo...
How will we use the geothermal energy at Koroit?: (1) for generation of electrical power
Conversion of geothermal heat to electricity Organic Rankine Cycle power plant
How will we use the geothermal energy at Koroit?: (2) for direct use of heat
Koroit Geothermal Development Program
Beneficial characteristics of geothermal energy  <ul><li>Clean, environmentally friendly </li></ul><ul><ul><li>Minimal lan...
Conclusions: <ul><li>Geothermal energy is in widespread use around the world </li></ul><ul><li>It is a very clean source o...
Technical Forum,  Resources Victoria Conference Melbourne, 14 July, 2010 Exploration and assessment of hot sedimentary aqu...
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Geothermal

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Transcript of "Geothermal"

  1. 1. The Koroit Geothermal Project Peter Barnett Managing Director Hot Rock Limited 10 Market Street, Brisbane, www.hotrockltd.com Presentation to Hawkesdale P12 College, 1 December 2010
  2. 2. Whilst this document and presentation is based on the information from sources which are considered reliable, Hot Rock Limited, its directors, employees and consultants do not represent, warrant or guarantee, that the information in this document and presentation is complete or accurate. To the maximum extent permitted by law, Hot Rock Limited disclaims any responsibility to inform any recipient of this document and presentation of any matter that subsequently comes to its notice, which may affect any of the information contained in this document and presentation. The information in this Statement that relates to Geothermal Resources has been compiled by Peter Barnett, an employee of Hot Rock Limited. Mr Barnett has over 30 years’ experience in the determination of crustal temperatures and stored heat for the style relevant to the style of geothermal play outlined in this release. He is a member of the Geothermal Resources Council and the International Geothermal Association, a current board member of the New Zealand Geothermal Association, a past board member of the Auckland University Geothermal Institute Board of Studies and a current member of the Economics Sub Committee of the Australian Geothermal Association. Mr Barnett qualifies as a Competent Person as defined by the Australian Code of Reporting of Exploration Results, Geothermal Resources and Geothermal Reserves (2008 Edition). Mr Barnett consents to the public release of this report in the form and context in which it appears. Neither Mr Barnett nor Hot Rock Limited takes any responsibility for selective quotation of this Statement or if quotations are made out of context. All amounts are in Australian dollars (AUD) unless otherwise stated. Disclaimer
  3. 3. What is Geothermal Energy? <ul><li>Geothermal means earth-heat. </li></ul><ul><li>It is related to the thermal energy of the earth’s interior. </li></ul><ul><li>This thermal energy increases with depth </li></ul><ul><li>A global average for the earth’s geothermal gradient (temperature increase with depth) is approximately 30°C/km. </li></ul><ul><li>The Earth contains an incredibly vast amount of thermal energy </li></ul><ul><li>The key issue is how to extract this energy. </li></ul>
  4. 4. Where Does Geothermal Energy Come From? <ul><li>Geothermal energy largely derives from two primary sources, primordial heat, and radioactive decay in the deep core of the earth. </li></ul><ul><li>Primordial heat is what resulted from the creation of Earth 4.5 billion years ago </li></ul><ul><li>As Earth’s outside has cooled, it has acted as an insulator for the heat in the middle, which is why Earth is still cool and hospitable on the outside, and hot-rock and metal at its core. </li></ul><ul><li>Some of the heat still seeps through the ‘insulation’, the evidence of this is volcanic activity such as that found in Hawaii, New Zealand, Japan and Italy. </li></ul>
  5. 5. Volcanic geothermal systems <ul><li>The highest quality geothermal resources are volcanic systems, limited to locations with a high level of tectonic activity, at tectonic plate boundaries </li></ul><ul><li>Within the ‘Ring of Fire’ which circles the pacific ocean there is a lot of tectonic activity which permits large amounts of heat to rise to Earth’s surface (often resulting in volcanism). </li></ul><ul><li>There are a limited number of countries on the Pacific Ring of Fire that can use geothermal power from volcanic systems </li></ul><ul><li>Even though Australia has small volcanoes, these are not “Ring of Fire” volcanoes thus Australia has no volcanic geothermal potential. </li></ul><ul><li>It does however have considerable potential for “HSA” and “EGS” types of geothermal </li></ul>
  6. 6. Volcanic geothermal systems <ul><li>generally have very obvious surface expression </li></ul><ul><li>convective upflow / outflow systems developed around and above shallow igneous heat sources </li></ul><ul><li>considerable worldwide experience (11,000 MWe / 100 years) </li></ul>
  7. 7. Volcanic geothermal systems Mature liquid-dominated andesitic stratovolcano geothermal system with exploitable outflow (Source of Graphic: SKM) <ul><li>conform to predictable models </li></ul><ul><li>exploration and development now relatively easy </li></ul>
  8. 8. Other geothermal system types – “HSA” and “EGS” No commercial operations Operating for over 25 years Operating for nearly 100yrs 96% of installed generation capacity
  9. 9. Current world wide geothermal power generation capacity is 11,000 MWe http://www.globalenergymagazine.com/?p=1658 , 20100910
  10. 10. Geothermal Exploration in Australia <ul><li>HSA Geothermal </li></ul><ul><ul><li>Otway Basin </li></ul></ul><ul><ul><li>Gipplsand Basin </li></ul></ul><ul><ul><li>Cooper Basin </li></ul></ul><ul><ul><li>Perth Basin </li></ul></ul><ul><li>EGS </li></ul><ul><ul><li>Largely South Australia </li></ul></ul><ul><ul><li>North west areas of Western Australia </li></ul></ul>
  11. 11. Australian HSA and EGS geothermal - “blind” plays HSA Play, Otway Basin 550,000PJ of “inferred geothermal resource” declared to date EGS Play Innaminka 200,000 PJ of “inferred geothermal resource “ declared to date
  12. 12. But clearly recoverable geothermal energy is present at depth in these ‘blind’ plays Recent flow testing of Salamander-1 HSA Play Penola Trough S.A. Courtesy of Panax Surface discharge of H abanero 3 EGS Play Innaminka, S.A. Courtesy of Geodynamics
  13. 13. The Koroit geothermal resource is an “HSA” geothermal system, located in the Otway Basin Base Graphic: Courtesy of Gescience Australia
  14. 14. A geological cross section through the Koroit geothermal system
  15. 15. Koroit is a large geothermal resource In-place stored heat 1: Indicated Geothermal Resource 47km 3 7,600PJ Inferred Geothermal Resource 340km 3 59,000PJ Totals: 387km 3 67,000PJ Capable of generating approx 500MWe of electricity Sufficient for about 500,000 Australia homes 1 Based on the Australian Code of Reporting of Exploration Results, Geothermal Resources and Geothermal Reserves (2008 Edition)
  16. 16. How will we use the geothermal energy at Koroit?: (1) for generation of electrical power
  17. 17. Conversion of geothermal heat to electricity Organic Rankine Cycle power plant
  18. 18. How will we use the geothermal energy at Koroit?: (2) for direct use of heat
  19. 19. Koroit Geothermal Development Program
  20. 20. Beneficial characteristics of geothermal energy <ul><li>Clean, environmentally friendly </li></ul><ul><ul><li>Minimal land use, low to nil emissions of CO 2 </li></ul></ul><ul><li>Sustainable </li></ul><ul><ul><li>Derived from near infinite earth heat </li></ul></ul><ul><li>Indigenous </li></ul><ul><ul><li>independent of commodity prices and risks </li></ul></ul><ul><li>Base load </li></ul><ul><ul><li>24/7 operation and with high fuel and plant availability </li></ul></ul><ul><ul><li>>90%, vs. 30% wind, 45% solar 50% ROR hydro </li></ul></ul><ul><li>Relatively high capital cost but low operating cost </li></ul>
  21. 21. Conclusions: <ul><li>Geothermal energy is in widespread use around the world </li></ul><ul><li>It is a very clean source of renewable, base load, indigenous energy </li></ul><ul><li>Australia has a very large carbon footprint and geothermal energy represents a means for significantly reducing this </li></ul><ul><li>Australia is the largest emitter of CO 2 per capita in the world and the largest part of Australia's carbon footprint derives from brown coal power generation in Victoria </li></ul><ul><li>Australia has considerably recoverable energy contained in HSA geothermal systems and the largest and best of these are in the Otway Basin and the Koroit geothermal resource is the highest quality HSA resource in the Otway Basin </li></ul><ul><li>The Koroit geothermal project will contribute in a meaningful manner to reduction of CO2 emissions to both the Australian and global atmosphere and to the mitigation of global warming, </li></ul><ul><li>This will allow the people of Koroit to become part of the solution to global warming and heavy dependence on fossil fuels, rather than continuing to be part of the problem </li></ul>
  22. 22. Technical Forum, Resources Victoria Conference Melbourne, 14 July, 2010 Exploration and assessment of hot sedimentary aquifer (HSA) geothermal resources in Otway Basin, Victoria www.hotrockltd.com www.hotrockltd.com
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