Valur Knútsson, Chief project manager, Landsvirkjun Iceland Geothermal Conference 2018 - Breaking the Barriers 24 - 27 April, 2018, Harpa, Reykjavík

1. Landsvirkjun
Theistareykir Geothermal Power Plant
An update on successful project
Valur Knútsson, Chief project manager
Presentation on IGC, April 26, 2018

2. Content of presentation
• Theistareykir Geothermal
Power Plant
• HSE matters
• The scope
• The Construction history
• Challenges and success
• Northern Sustainability Project

3. HSE – zero accident policy
Registration of all incidents
▪ Accidents with or without absense from work
▪ Almost accidents, near misses
▪ Dangerous behaviour
▪ Critical circumstances
▪ Dangerous equipment
Logged incidents
▪ Approx. 1.096.143 working hours
▪ 6 accidents with absense from work
(H-200 = 1,09) – lost working hours 1052
▪ 29 accidents without absense from work

4. MT Bæjarfjall
Drilling Area A
Transformers
Service building
and Work Shop
Moist eliminators
Cooling
towers
Steam valve station
and Silencers
Main Steam supply pipelines Steam separators
Re-injection wells
Picture showing the main parts of the project
The powerhouse is built for two 45 MWe units
Great emphasis is placed on environmental issues and a good surface finish of construction area
Steam gathering pipeline 5
Steam gathering pipeline 2
Engineering: Theistareykir Geothermal Power Plant

5. Approaching with care
Decades of reservoir researhes
▪ Planned utilization 90 MWe
▪ Steam power of 58 MWe confirmed prior to
construction start
▪ Reservoir capacity tests
Environment monitoring and reclamation
▪ Monitoring of flora and fauna during construction
▪ Replacement of vegetation
▪ CO2 countermeasures by planting of trees
▪ Reclamation of grazing land
Aflprófun
Replacement of vegetation
Aflprófun
Monitoring

6. Wells
Power estimate
Mwe Remark
ÞG-01 6,9 Confirmed / In use
ÞG-03 7,0 Confirmed / In use
ÞG-04 21,3 Confirmed / In use
ÞG-05B 8,4 Confirmed / In use
ÞG-06 7,3 Confirmed / In use
ÞG-07 4,7 Confirmed / In use
ÞG-09 3,6 Confirmed / Not in use
ÞG-11 14,4 Confirmed / In use
ÞG-12 5,7 Confirmed / In use
ÞG-13 7,3 Confirmed / In use
ÞG-14 - To be tested for re-injection?
ÞG-15 2,0 Estimated / Not in use
ÞG-16 1,9 Confirmed / Not in use
ÞG-17 14,8 Confirmed / Not in use
ÞG-18 2 Estimated / Not connected
Estimated power capacity equals 105,3 + 2 MWe
Engineering: Steam wells for 90 MWe
Re-injection area
Separator station
Power house area
Drilling area
Well path
Steam wells
Clarification:

7. 7
Theistareykir
Power Plant
Mission
accomplished with-
in time schedule and
budget
The Construction
Hisrory

8. 8

9. 9
Technical data per Turbine,
Generator and Cold End:
Turbine rotor desing:
Single flow multi stage reaction type
Rated/max. output: 45/47,25 MW
Inlet steam pressure: 9,0 bara
Temperature: 175,4 °C
Gas content: 0,60% by weight
Turbine rated speed: 3000 rpm
Rotating blade rows: 12
Last stage blade length: 798 mm
Total steam consumption: 77,2 kg/s
Generator output: 50 MVA
Generator voltage: 11 kV, 50 Hz
Excitation system: Brushless
Condenser type:
Surface, shell and tube type
Condenser pressure: 0,08 bara
Gas extraction system: Hybrid
Cooling tower type:
Mechanical induced draught wet type

10. Transmission system
Landsnet 2018
SOG
HRA
SIG
BUR
PRB
SUL
VAF
HAM
BRE
KOR
GEH
SVA
FIT
NES
BLA
KRA
RAN
LAV
LAX
VAR
TEH
HOL
HRY
GED
220 kV
132 kV
66 kV
Lines & cables
33 kV
HRU
GLE
MJO
VAT
VEG
AND
AKR
SAU
DAL
KOP
HUS
KEL
BRD
BOL
ISA
VOG
GRUOLA
SEL
TOR
HVE
FLU
HEL
HVO
RIM
VES
STU
ESK
NSK
SEY
EYV
LAG
VOP
FASFLJ
REY
RAU
LIN
KOL
HNO
OLD
A12
KLA
BUD
THR
KS1BV2BV1
IF1
BD1
TA1
MJ1
GL1
HT1
VS1
OL1
GF1
LV1
BL1
BL2
RA1
DA1
SA1
HU1
KR1
LA1
KR2
TR1
VP1
LF1 SF1
ES1EY1FL2
FL3
FL4
SR1
SR2
FA1
NK1
TE1
HO1
PB1
SI4
HA1
VF1
SI3
HV1
HR1
SI2
BH1
HE2
RI1
HE1
BU2
BU3 BU1
SE1
HG1
TO1
SE2
VM1,2,3
SN1
BR1
SO3
NE1
NE2
SO2
HN1,2
SU3
SU1
GE1
VE1
STA
SE3
HOF
KR4
KS1
BAK
Þeistareykir (THR) is connected to
a very week transmission grid
Main challenges for the plant´s
operation is the unit´s performance in
the week grid:
• Active frequency – and voltage
regulation is mandatory function.
• Set objectives accived in good co-
operation with Landsnet (grid
operator) and the contractor (Fuji).

11. Northern Sustainability Project
Geothermal Sustainability Assessment Protocol (GSAP)

12. Theistareykir – GSAP results
Preparation phase
▪ 18 Topics assessed
▪ 10 Proven Best Practice (5)
▪ 6 One gap against PB Practice
▪ 2 Basic Good Practice (3)
Encouragement for all
participants
▪ Sustainable approach from
the very beginning
▪ Motivation througout the
project´s execution
https://www.landsvirkjun.is/Media/gsap-
theistareykir-assessment-reportfinal-3-
may-2017-4.pdf
12

13. Northern Sustainability Project
Objectives
▪ Capture expectations and concerns of
stakeholders regarding proposed constructions
and operations.
▪ Monitor the social, environmental and
economical indicators.
▪ Build up knowledge and data that will improve
decision making
Sustainability indicators
▪ Developed by project owners and stakeholders
▪ First measurements / results expected to be
accessible in the first half of 2018
http://www.gaumur.is from end of May 2018

14. The Project
… to prepare and construct
a 90 MW Geothermal
Power Station utilizing
natural resources in a
sustainable way.
The Product
… hoped to be a testament
to the positive impact of
Landsvirkjun in Iceland
… and the conclusion

15. All photographs by
Mr. Hreinn Hjartarson
Thank you