Highlights of Phase I

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HYDROGEN PRODUCTION VIA REDOX FLOW BATTERY
Type of storage centralized
Stored energy mechanical
Most economic cycle period hrs/days
Efficiency estimated: 70%
Status Demonstrator

 

 

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ADVANCED ADIABATIC COMPRESSED AIR STORAGE
Type of storage centralized
Stored energy mechanical
Most economic cycle period hrs/days
Efficiency estimated: 70%
Status Demonstrator

 

 

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DEMONSTRATORS
Type of storage centralized
Stored energy chemical
Most economic cycle period days/weeks
Efficiency estimated: 40%
Status Demonstrator

 

 

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SODIUM ION BATTERY
Type of storage decentralized
Stored energy chemical
Most economic cycle period hrs
Efficiency estimated: 90%
Status Proof of principle

 

 

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CO- ELECTROLYSIS
Type of storage centralized
Stored energy chemical
Most economic cycle period days/weeks
Efficiency estimated: 60%
Status Proof of principle

 

 

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ASSESSMENT OF ENERGY STORAGE IN SWITZERLAND
A ranking for storage options, depending on cycle time is given.
At a system size of 1 MW, for short (< 1 min)
term storage battery systems are most economic and associates with the
least greenhouse gas emissions, while for medium term storage (day),
battery is still advantageous in terms of cost,
but not in terms of green-house gas emissions, Batteries fall
behind pumped hydro and adiabatic air storage.