• Paired with Wind or Solar Renewable Power Generation

 ...additional value from adding a 4-hour energy storage system  sized to 50% of renewable-plant nameplate capacity is $10/MWh across ISOs on average.

The highest boost occurs in California ($15/MWh), where the value of adding storage to solar rises over time in tandem with increased solar penetration in the region.

If renewables and storage are deployed independently, we estimate that $12.5/MWh of additional value could be achieved because of more flexibility on battery siting and operation. 

Lawrence Berkley National Lab

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• 
  
• Existing Base-Load Combined-Cycle Gas Fired Power Plants

(The Highest and Best Use Case)

• Recover the cost of pipeline compression from a power plant's high-pressure gas supply. 

• Utilize proven pressure let-down Rotoflow Technology to power the CES LAES system to make and store gallons of liquid air.

• Generates fuel cost-free, carbon-free power from storage for sale in high-value day-ahead peak power markets, or...

• Hydrogen generation co-located with base-load Combined Cycle Gas Turbine  power plants.

• Recharges co-located arrays of battery storage.
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Download the Rotoflow Technical Brochure

(The Value Proposition)

The DOE asked CES to project the value of this use case applied to 100% of

the installed CCGT generation in the U.S.

Assumptions:

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• EIA Average CCGT Pant Heat Rate
• EIA Average Plant Capacity Factor
• Available Let-Down Pressure: 500 psi

CES used its proprietary model to estimate power available to be

recovered from gas transmission pressure let-down.