The Traditional Large Larg e Scale Scale app ppro roa ach vs. v s. The Well Wellhea head d approach (Sma Small ll is beauti beautiful ful ) Iceland Geothermal Conference Reykjavik, Iceland April 2016
Green Energy Geothermal Accelerating development with geothermal wellhead power plants Green Energy Geoth ermal Overview •
Incorporated in 2008
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Solution developed in Iceland by leading geothermal scientists and engineers
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Lead by experienced executive team, headquartered in London
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Global company working across East Africa, Southeast Asia, Latin America & the Caribbean
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Delivering geothermal wellhead power plants in size 3.5 to 20 MWe
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Today 12 plants are successfully commissioned in Kenya with a combined generation capacity of 65 MWe and additional 3 plants with 15 MWe under construction
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Recognized for its solution in the 2013 Global Cleantech 100, won the 2014 Bloomberg New Energy Pioneer Award and in 2015 nominated for the European Geothermal Innovation Award
Green Energy Geothermal Accelerating development with geothermal wellhead power plants GEG geothermal well head power plants • •
Plants can be delivered as standalone units or several units in power farms Standardized design and components, optimized to individual well characteristics & output specifications
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Modular design allows cost-efficient electricity generation from remote and stranded wells
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Early access to revenue and lower up-front investments compared to traditional largescale developments
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Containerized modules allow for rapid deployment and early revenues
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Plants can be deployed and commissioned on a EPC bases, within 12-14 months, allowing faster return on investment
Cooling towers
Condenser and NCG Extraction Control System and panels
Steam separator
Silencer
Green Energy Geothermal Solution, scope of supply and services GEG geothermal wellhead power plants •
Plant sizes from 3.5 to 20 MWe, scalable in power farms on turn-key basis
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Condensing single flash technology
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Design adaptable to specific well output characteristics
• Rapid deployment, early revenue GEG plants and projects •
12 plants commissioned and operating at Olkaria in Kenya with total nameplate capacity of 65.6 MWe
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8 plants of 5 MWe and 4 plants of 6.4 MWe
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3 plants of 5 MWe under construction, expected start of operation of last plant by June 2016
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6 substations installed and operating
Green Energy Geothermal Scope of supply and service Scope of supp ly •
Steam system
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Modular plant, including generator-set, cooling towers and related systems
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Electrical, control and protection system
Scope of service •
Shipping, supply, installation and commissioning of entire plant
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Design & engineering, quality management
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Supervision of GEG sub-contractors
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Procurement to site
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Preparation of installation and operating manuals
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Addi ti on al su pp ly and ser vices •
Main step-up transformer substations
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Steam system and separator for dry steam as replacement for two-phase alt. solution
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Diesel Generator systems
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Civil works, incl. excavation, plant fencing with gates, trenches, drains and flood protection
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Operation & maintenance
Testing and commissioning, training of operators
Green Energy Geothermal Additional equipment
Substations and related equipment •
GEG has developed and delivered equipment to connect our plants to the grid.
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Large modular substation (1)
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2
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Mobile substation 8 MVA (2)
Green Energy Geothermal Operational experience in Kenya
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Total operational: 135,000 hrs (15 yrs)
• Average availability 2014- today: 97.2%
Geothermal power plants The traditional large-scale development approach Traditional large-scale approach •
Large number of wells
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Revenue generation only after full completion of plant
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Development takes 4-7 years
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Complex and tailor made solution
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Not movable should reservoir decline
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Multiple wells, lowest pressure well dictates operating pressure
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High capital/ engineering cost early in the project
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Require large power installations, massive piping and infrastructure
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Substantial environmental impact.
Geothermal power plants Scalable wellhead power plant approach Wellh ead p lant •
Single or multiple wells
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1 year from contract to COD
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Standardized set-up and modules mitigate project risk
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Modular approach provides movability
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Each well operated at optimum pressure
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Limited early stage capital cost
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Earlier return on investment
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Small footprint, low visibility and environmental impact
Conventional vs. wellhead plants Resource development & risk
Resource development/ resource risk Conventional/ large •
Large number of wells required
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Complex and tailor made solution
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Wellhead plant •
Single or multiple wells
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Simple set up and standardized components mitigate project risk
Not movable should reservoir decline
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Modular approach provides movability
Multiple wells, lowest pressure well dictates operating pressure
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Each well operated at optimum pressure
Green Energy Geothermal Wellhead power plant solution
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Scalable from 3.5 to 20 MW units per well
Conventional Geothermal Power Plant – 50 MW
Components arrive in standard 40” containers
Geological Research
Ease of construction, installed on site in a short period of time Faster power online, earlier revenues
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Utilize wells outside reach of traditional plants
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Potential to utilize excess steam from traditional plants
Year
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10+
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Drilling Evaluation Construction Operation
GEG units – 50 MW developm ent Year
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Geological Research Drilling Evaluation Construction Operation
Cash flow from operations
Conventional vs. wellhead plants Faster revenues
Early power online/ Bankability Conventional/ large
Wellhead plant
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Cash flow late in the process
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Early cash flow with plant on first well
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Bankable relatively late in the investment phase
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Smaller investment phases,
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Bankable early
Resource failure will have large consequences - RISK
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Can be relocated at relatively low cost in case of resource failure
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Conventional vs. wellhead plants Summary
A project’s success depends heavily on: •
Efficient resource risk management
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Thorough preliminary investigations
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Careful planning and execution
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Staged capacity build up to avoid over exploitation of the resource and unpleasant unforeseen incidents
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Being bankable soon in the investment phase
Be Observant on the Time-Value of Money!
Green Energy Geothermal One well pad: 3x C50, 2x C64 plants in operation, 27,8MW
For more details on wellhead plants of GEG see: www.geg.co.uk
