[RE-wrenches] kW/MW v. kWh/MWh

[Darryl Thayer]

H Marco
Yes both terms are important, but most of the time they are looking for power during the time it takes to fire a peaking plant generator.  It may take 10 to 15 seconds, Also one of the big uses of storage for utilities is frequency stabilization, it is desirable to supply and absorb great quanities of power, in very short times.  Therefore they talk of kW and MW instead of kWh and MWh.

A local facility which uses batteries is 10 MW and 1 MWh 


Darryl

--- On Sat, 1/16/10, Marco Mangelsdorf <marco at pvthawaii.com> wrote:

> From: Marco Mangelsdorf <marco at pvthawaii.com>
> Subject: [RE-wrenches] kW/MW v. kWh/MWh
> To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
> Date: Saturday, January 16, 2010, 4:35 PM
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> I’m reading a piece on energy
> storage in the latest
> issue of Distributed Energy mag. 
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> The writer, Lyn Corum, repeatedly
> refers to the capacity of
> storage mediums (thermal, compressed air, flywheel,
> battery) in kW and MW
> terms. 
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> Heck, even my friends at Beacon Power
> refer to their flywheel
> systems in MW terms. 
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> Am I missing something here? 
> Shouldn’t all references
> to energy storage be in kWh and MWh terms? 
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> Or am I experiencing a d’oh!
> moment? 
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> Marco 
> 
> ProVision Solar 
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