What is Energy Recapture and How does it Work

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Lixin 　 Quan

active　during　the　daytime

　　　　　　inactive　at　night

consumers　of　electricity

Quantity　demanded

Energy　Recapture　is　systemEnergy　Recapture　is　system　　that　that　allows　energy　to　be　stored　when　electricity　is　plentiful　and　released　for　generation　in　times　of　high　grid　demand.　

Pumped-storage　hydroelectric　power　plantCompressed　air　energy　storage　

What　is　Energy　What　is　Energy　RecaptureRecapture

The power made in nightUse

Waste

How does Pumped Storage How does Pumped Storage WorkWork

Pumped-storage hydroelectric power plant

approximately　70%　to　85%　of　the　electrical　energy　used　to　pump　the　water　into　the　elevated　reservoir　can　be　regained　

Low-cost off-peak

(at night)

electric power is used to run the pumps.

During periods of high electrical demand, (at noon) the stored water is released through turbines to produce electric power.

Advantages

No release of CO2 No fossil fuels required

Station CountryCapacity (

MW)

Bath　County　Pumped　Storage　Station United　States

3003

Guangdong　Pumped　Storage　Power　Station

 China 2,400

Okutataragi　Hydroelectric　Power　Station  Japan 1,932

Ludington　Pumped　Storage　Power　Plant United　States

1,872

Tianhuangping　Pumped　Storage　Power　Station

 China 1,836

Worldwide　use　of　pumped-storage　hydroelectricity

Reference

http://www.scotsrenewables.com/blog/distributionandstorage/pumped-storage-hydro-in-scotland/

http://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity

Thanks for your attention