WO/2009/126784 is referenced by 52 patents.

The invention relates to methods and systems for the storage and recovery of energy using open-air hydraulic-pneumatic accumulator and intensifier arrangements that combine at least one accumulator and at least one intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits.

Title
Systems and methods for energy storage and recovery using compressed gas
Application Number
PCT/US2009/040027
Publication Number
2009/126784
Publication Date
October 15, 2009
Inventor
Bollinger Benjamin R
Mcbride Troy O
Agent
FORCIER John V
Assignee
Bollinger Benjamin R
Mcbride Troy O
Sustainx
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