Download - Underground Sun Storage - ETIP SNET
Stephan BAUER, Manager Power to Gas, Innovation and Development
RAG, Schwarzenbergplatz 16, A-1015 Vienna, Austria, www.rag-austria.at
Underground Sun Storage Seasonal Storage of Renewable Energy in depleted Gas Reservoirs
Results of an in-situ Field Experiment and Outlook
ETIP-SNET; September 18th, Aachen
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RAG Austria - Company Profile
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
• Among leading Underground Gas Storage Operators
• State of the art and most innovative Storage Operator
• Storage volume 66 TWh (6,0 bcm)
• Unload capacity 30 GW
Our vision:
• Positioning RAG’s assets in a changing energy system
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Electricity Storage ≠ Energy Storage
Electricity Generation
from renewable sources
Electricity Storage
Energy Demand
20% Electricity
50% Heating/Cooling Industry
30% Mobility
H2, Methane Gasgrid
Gas Storage = Energy Storage ≠
Grid Balancing
Day-Night Shift
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36.0
00 M
Wh
What is the problem we are talking about?
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Batterystorage in every
Household in the
region
1.200 MWh
Batterystorage in every
single Passanger Car
in the region
180.000 Electric
Vehicles
4.500 MWh
Pumped Hydro in the
area
2.800 MWh
Gas Storage Facility
RAG Puchkirchen
12.000.000 MWh
Gas Storage Facility RAG Puchkirchen, Austria
72 Hours
500 M
W
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Development of the
Underground Sun Storage Project
• Motivation
• Gas Storage is Energy Storage
• Gas Storage is ‘invisible‘ and ‘available on demand‘-Energy
• Gas has an existing infrastructure in many regions of the world
• Gas can be greened from 0-100% without changing the system
• Goals of the Project
• Demonstration of Storability of renewable gases in Gas Storage
facilities
• Research on effects of 10% hydrogen admixtures in existing
Gas Storage Facilities
• Partners
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WP: Work Package
WP
5: M
ater
ials
an
d
Co
rro
sio
n
WP 1: Project Management
WP
2 G
eoch
emis
try
and
R
eact
ive
Tran
spo
rt
mo
del
ling
WP
3: M
icro
bia
l P
roce
sses
in H
ydro
gen
Ex
po
sed
Res
ervo
irs
WP
4: D
emix
ing
of
Nat
ura
l Gas
an
d
Hyd
roge
n
WP
6: M
emb
ran
e Te
chn
olo
gy
WP
9: R
isk
Ass
essm
ent
an
d L
ife
Cyc
le A
sses
smen
t
WP
10
: Eco
no
mic
an
d L
ega
l An
alys
is
WP 7: Design and Construction of Testbed
WP 8: Testbed Operation
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18 7
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Results Lab-Experiments
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• Laboratory tests indicate no problems with storage integrity
• H2 Permeability in cap rock
• H2 Permeability in cementing
• No generation of H2S
• No influence of H2 on well completion materials
• Microbial activity verified
• Microbial consortia characterized
• Environmental circumstances defined
• Due to positive results start of worldwide unique field experiment
same range like
natural gas
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
• Selection of Reservoir
• Lehen-002 is very small and isolated
• Field experiments at reasonable costs and risks
• Conditions comparable to commercial RAG storage facilities
• Storage cycle with 10% Hydrogen admixture
• App. 1.2 Mio m³ injected
• Pressure range 30 – 78 bar
• Duration app. 10 months
• Material testing section
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WP 7 & 8: In-situ Field Experiment
Construction and Operation
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RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Schematic View – Underground Sun Storage
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18 11
WP 8: Balancing of Hydrogen
• 82% of H2 retrieved
• Rest has dissolved in reservoir fluids, migrated into cushion gas or was transformed
to other gases by microbial metabolism
• => In total calculation models allow the balancing of hydrogen. Majority of balancing
defizits arise for establishing a new equilibrium in the reservoir
Conclusion – Field Experiment
• No curtailment of storage integrity detected
• No H2S detected
• No decrease of permeability, no pore glogging
• Good analogy between lab-tests and field test
• Handling within the existing legal framework
• Open: operational and commercial effects
• Discovery of future potential
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18 12
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RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Establishing a Sustainable Carbon Cycle
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High potential for the future
• Establishing a sustainable carbon cycle
• Seasonal storage of renewable energy
• Future use for existing infrastructure (grids, storages, appliances)
• Renewable gas for heat market and mobility
• Import of renewable energy to Europe as gas
• Decarbonizing despite missing production potentials
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
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Need for Future R&D, Barriers
• Status
• Underground Gas Storage – storage option for seasonal balancing
• Each one with its individual characteristics
• Promising results for a single geological formation
• Need for further activities
• Pan-European assessment of storage facilities
• Long term effects?
• Assessment of commercial effects
• Underground Sun Conversion
• Project already ongoing
• Follow up to demonstrate a sustainable carbon cycle?
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
RAG Underground Sun Conversion | Stephan Bauer | 2017 09 18
Underground Sun Conversion – Contact
• Stephan Bauer; Manager Power to Gas
(+43-50724-5377; [email protected])
• www.underground-sun-storage.at
• www.underground-sun-conversion.at
Thank you for your kind Attention!
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