traditional large-scale development vs staged … large-scale development vs staged approach with...

Traditional large-scale development vs staged approach with smaller wellhead units

Green Energy Geothermal

Green Energy Geothermal Ltd.Company Overview

Green Energy Geothermal - 2017

• Incorporated in 2008,

• Headquarter London/UK

• Solution developed in Iceland by leading geothermal scientists and engineers

• Condensing flash technology

• 15 plants successfully commissioned in Kenya with a combined generation capacity of 80.6 MWe

• Global company working across East Africa, Southeast Asia, Latin America & the Caribbean

• Delivering geothermal wellhead power plants in size 3.5 to 10 MWe on turn-key basis, scalable in power farms

Geothermal power plantsThe traditional large-scale development approach


• Large number of wells

• Revenue generation only after full completion of plant

• Development takes 4-7 years

• Require large power installations, massive piping and infrastructure

• Complex and tailor made solution

• Not movable should reservoir decline

• Multiple wells, lowest pressure well dictates operating pressure

• High capital/ engineering cost early in the project

• Substantial environmental impact.

Conventional large scale developmentThe traditional large-scale development approach

Conventional large scale development – single turbine (50 MW)


Year 1 2 3 4 5 6 7 8 9 10+

Geological Research

Drilling

Evaluation

Construction

Operation / Revenue

Green Energy Geothermal Ltd.Accelerating development with geothermal wellhead power plants


• Condensing, flash plants on turn-key basis

• Plants can be delivered as standalone units or several units in power farms

• Early access to revenue and lower up-front investments compared to traditional large-scale developments

• Standardized design and components, optimized to individual well characteristics & output specifications

• Modular design allows cost-efficient electricity generation from remote and stranded wells

• Containerized modules allow for rapid deployment

• Plants can be deployed and commissioned within 12-14 months, allowing faster return on investment

• Minimised need to Steam Above Ground System (SAGS)

Year 1 2 3 4 5 6 7 8 9 10+

Geological Research

Drilling

Evaluation

Construction

Operation / Revenue

Modular staged developmentStaged development approach with smaller modular units

Modular staged development – 10 units 5 MW each (50 WM in total)


Modular plant footprint2 x C64 plants in operation - 12.8MW


75mtrs

35mtrs

Conventional vs. Modular ApproachWellhead power plant solution

Advantages of modular units: better efficiency and faster energy production


• Scalable from 3.5 to 20.0 MW units per well

• Faster power online, earlier revenues

• Components arrive in standard 40” containers

• Ease of construction, installed on site within a matter of weeks

• Utilize varying well pressures rather than balancing multiple wells

• No steam gathering system

• Less environmental impact

• Mobility/reusability if resource fails or depletes

• Potential to utilize excess steam from traditional plants

• Utilize wells outside reach of traditional plants (stranded wells)

Conventional vs. Modular ApproachStudy on Accelerating Geothermal Development in Indonesia


Evaluation of a staged modular development over a conventional centralized single-turbine on project sizes ranging from 20 MW to 110MW.

The August 2016 study found that:

”Bringing electricity on-line in stages provides a variety of project benefits”

• Earlier revenue generation

• Reduced development uncertainty and risk

• Reduced investment risk

• Tariff savings

* Assumed Equity IRR at 18% and costs are assumed on representative level of good resource and good infrastructure (results based on June 2017 updated analyses)

Electricity Tariff staged & conventional approach by project size* (US cents/ kWh)

** Over conventional centralized single-turbine development approach

Tariff savings of staged modular approach by project size** (US cents/ kWh)

2,9

1,91,5 1,3

0,0

1,0

2,0

3,0

4,0

20 55 80 100Project size (MW)

0,0

5,0

10,0

15,0

20,0

20 55 80 100

Modular Plant

Centralised Plant

Project size (MW)

Green Energy GeothermalFlexible plant design

• Condensing single flash steam power plants designed for flexibility

• Power output ranges:

- Plant C32: From 3.5 up to 4.0 MWe



• Inlet steam pressure ranges in Bar_a:

- Turbine type L: 5-9

- Turbine type H: 9-18


Key plant design elements Plant schematic overview

Green Energy GeothermalWellhead power plant solution


Single turbine configuration Twin turbine configuration

Cooling towers

Steam

separatorSilencer

Condenser and NCG

Extraction

Control

System and panels

WellheadSilencer

Steam

separator

Cooling

towers

Control

System and panels

Condenser and NCG

Extraction

• Modular design

• Optimal power generation

• Rapid deployment

• Scalability

• Accelerated return on investment

• Engineering, power plant design (including turbine) and quality control by GEG.

• Main components sourced from international high quality suppliers

Green Energy Geothermal27.8 MW 3x C50, 2x C64 plants in operation


Green Energy GeothermalList of operating plants at Olkaria, Kenya (status September 2017)


PlantLocation/

Wellpad

Nameplate capacity (MWe)

Description

OLK01 WH-37A 5.0 MWe• GEG Pilot Plant operating

since Feb. 2012, • handed over Nov. ‘13

OLK02 WH-37A 6.4 MWe• Operating since Sep. ‘13• Handed over in Jan. ‘14

OLK03 WH-43A 6.4 MWe• Operating since Nov. ‘13• Handed over in Jan. ‘14

OLK04 WH-914A 6.4 MWe• Operating since Feb. ‘14• Handed over in Mar. ‘14

OLK05 WH-914B 6.4 MWe• Operating since Mar. ‘14• Handed over in May ’14

OLK06 WH-914 5.0 MWe• Operating since Oct. ‘14• Handed over in Jan. ‘15

OLK07 WH-914 5.0 MWe• Operating since Nov. ‘14• Handed over in Jan. ‘15

OLK08 WH-914C 5.0 MWe• Operating since Feb. ‘15• Handed over in May ‘15

PlantLocation/

Wellpad

Nameplate capacity (Mwe)

Description

OLK09 WH-915C 5.0 MWe• Operating since Jun. ‘15• Handed over in July ‘15

OLK10 WH-915D 5.0 MWe• Operating since Jun. ‘15• Handed over in Jun. ‘15

OLK11 WH-919A 5.0 MWe• Operating since Mar. 1, ‘16• Handed over in Jul. ‘16

OLK12 WH-37 5.0 MWe• Operating since Feb. ‘16• Handed over in Jul. ‘16

OLK13 WH-37B 5.0 MWe• Power online in Apr. ‘16• Handed over in Aug. ‘16

OLK14 WH-905 5.0 MWe• Power online in Apr. ‘16• Handed over in Aug. ‘16

OLK15 WH-39 5.0 MWe• Power online in Aug. ’16• Handed over in Dec. ‘16

80.6 MWe Total installed capacity

Green Energy GeothermalNew project – Bjarnarflag, Iceland (status August 2017)


Green Energy GeothermalAdditional equipment

Substations and related equipment

• GEG has developed and delivered grid connection equipment for our plants.

• Large modular substations 87,5 MVA (1) and 40 MVA (1)

• Mobile substations 8 MVA (2)


1 2

2 2

Green Energy GeothermalList of other equipment at Olkaria, Kenya


Wellpad Design/ Description Rated Voltage Rated Power Commissioned Status

WH-43SA8, Mobile Substation

11/ 33 kv 8 MVA • OLK02, January ‘14 Operating

WH-43SA8, Mobile Substation

11/ 33 kv 8 MVA • OLK03, January ‘14 Operating

PortableSA8, Mobile Substation

11/ 33 kv 8 MVA • OLK04 Parked

PortableSA8, Mobile Substation

11/ 33 kv 8 MVA • OLK05 Parked

WH-914SA914, Modular

Substation11/ 220 kv 87.5 MVA • OLK07, January ‘15 Operating

WH-37SA37 Modular

Substation11/ 132 kv 45 MVA • OLK12 & OLK 13, May ‘16 Operating

Green Energy GeothermalC50 plants in operation


Green Energy GeothermalC50 plant in operation


Green Energy GeothermalC64 plants in operation


GEG AwardsMarket & industry recognition

March 5, 2015: Green Energy Geothermal was a runner-up for the 2015 European Geothermal Innovation Award by the European Geothermal Energy Council (EGEC). The awards were announced on stage at the GeoTHERM expo & congress in Offenburg, Germany.

April 7th, 2014: Green Energy Geothermal was announced as a 2014 New Energy Pioneer by Bloomberg New Energy Finance (BNEF). The ten winners were recognized on stage at the seventh annual Bloomberg New Energy Finance Summit in New York City.

October 11th, 2013: Green Energy Geothermal was named in the prestigious 2013 Global Cleantech 100, produced by Cleantech Group, a global market intelligence and consulting firm helping executives connect with innovation.


GEG Quality Management ISO 9001 certification


GEG operations are based on using predefined quality procedures, and is certified according to ISO-9001.

FS 665487

Green Energy GeothermalContact


GEG | UK – Head Office

Niddry Lodge51 Holland StreetLondonW8 7JB United KingdomTel: +44 (0)203 198 6400

GEG | ICELAND

Kringlan 5IS-103 ReykjavikIcelandTel: +354 512 8090

GEG | KENYA

7th floor, Purshottam Place, WestlandsP.O. Box 66217-00800, NairobiKenyaTel: +254 (0)700 396 156

GEG | INDONESIA

The Energy Building, 10th

floor Zone G, SCBD Lot.11A.Jl. Jend. Sudirman Kav. 52-53, Jakarta 12190 IndonesiaTel: +62 21 29951632

GEG | SINGAPORE

37th Floor50 Raffles PlaceSingapore 048623Tel: +65 6829 7058Fax: +65 6829 7070

GEG | NORWAY

C.J. Hambros Plass 2C0164 OsloNorwayTel: +47 22996073 Fax: +47 22996010

Website: www.geg.co.uk

E-mail: [email protected]

Offices

For more details on GEG wellhead plants

please go to www.geg.co.uk

traditional large-scale development vs staged … large-scale development vs staged approach with...

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