Fernhill Corporation (FERN)

[sharky]

Catching on: “These systems include both battery and ultracapacitor (also known as supercapacitor) elements. Given ultracapacitors’ electrostatic (vs. electrochemical) mechanism, these electronic devices deliver massive amounts of power measured in hundreds of kilowatts or megawatts,” Lentsch wrote.

“They can be discharged in cycles and recharged in seconds instead of minutes or hours, unlike their battery counterparts. The delivered and available power density of ultracapacitors is a factor of 1,000 W/kg greater than batteries, and can deliver power to the grid when needed as opposed to catching the battery system output at the right time following a discharge-recharge cycle. Hybrid battery-ultracapacitor energy storage systems are now being constructed to deliver specified amounts of energy and power to account for megawatts of power delivered by the ultracapacitors, as opposed to megawatt-hour-centric energy delivered by batteries alone.”

Lentsch also referred to one already-existing project, a hybrid “stacked, dual application and simultaneous use battery-ultracapacitor system” deployed by utility Duke Energy earlier that year. He said that as well as lowering the cost of delivering multiple “stacked” services to the grid, capacitors could also reduce wear, tear and ultimately degradation of the batteries by performing many of the fast responding, high power functions.




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