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@Brownedoff I meant give it it's own special Discussion post rather than tie up Unthreaded

Oct 25, 2014 at 7:21 PM | Registered Commenterstewgreen

@stewgreen 6:01pm

No, I have finished thank you.

You do whatever you want.

Oct 25, 2014 at 6:34 PM | Unregistered CommenterBrownedoff

"800,000 D-size batteries that will provide frequency regulation"
are we talking abt 2 different things frequency regulation is not same as general "energy storage" for power cuts . Sounds more like storing a tiny bit of current to keep the frequency OK
anyway ..time you opened a new discussion thread if you want to talk more I guess

Oct 25, 2014 at 6:01 PM | Registered Commenterstewgreen

@stewgreen 3:47pm

Not me, just cuttings from your links - you take it up with AES if you are not happy.

Check out your own link, 4th paragraph:

The Tait battery array includes more than 800,000 battery cells

and this, 3rd paragraph, which mentions D size batteries:

The company is planning an array of 800,000 D-size batteries that will provide frequency regulation

and this link derived from clicking around the AES site:

It is the same lithium-ion battery technology found in your tablet, laptop and cell phone

Oct 25, 2014 at 5:12 PM | Unregistered CommenterBrownedoff

what you on about ? ..800,000 batteries expressed as 0.8M , (40MW/0.8M)= load of 50W per battery !
how many miliseconds is that going to last ?

Oct 25, 2014 at 3:57 PM | Registered Commenterstewgreen

@stewgreen 3:05pm

Ha! So, 800,000 D-size batteries for 40MW

Amazon - Duracell MN1300 Plus Power D Size Batteries--Pack of 4 for £4.74 free UK delivery.

200,000 x 4.74 = £948,000.

Oct 25, 2014 at 3:26 PM | Unregistered CommenterBrownedoff

@Brownedoff ..types 40MW storage into Google comes up with AES commences operation of 40 MW lithium-ion storage facility in Ohio leads to "AES to build 100 MW energy storage plant in Northern Ireland"
.. leads to AES Energy Storage website

no idea about the losses, but I bet using fossil/fuels as a solution works better/cheaper but doesn't attract subsidies & green halo
..and the thing is there is usually a massive optimism bias with this kind of things due to everyone having the incentive to portray them as magic, but only after someone has spent big money do the negatives become clear

Oct 25, 2014 at 3:05 PM | Registered Commenterstewgreen

Not exactly long range weather forecast but an interesting article at Sunrise's Swansong

Oct 25, 2014 at 1:55 PM | Unregistered CommenterSandyS

Oct 24, 2014 at 8:31 PM Dave_G

OK, thank you,

I was also wondering how big a building for 40MW of storage which requires 4,000 10kW cabinets.

Back of envelope:

Say, 40 rows x 100 cabinets

40 cabinets 0.55m deep = 22m

39 walkways @ 1,5m wide = 58.5m

2 side walkways @ 2.5m wide = 5m

total width inside of building = 85.5m

100 cabinets @ 0.95m wide = 95m

2 x end spaces for offices/workshop @10m long= 20m

total length inside of building = 115m

So, 40MW battery needs a building 115m.x 85.5m.

Hmmm ....Wembley stadium football pitch is 105m x 69m

Trebles all round!

Oct 25, 2014 at 1:08 PM | Unregistered CommenterBrownedoff

2pm Radio 4 Green energy will be one of mains topics of the Any Answers phone-in which follows the repeat of that Any Questions show
tweet BBCaq

Oct 25, 2014 at 1:02 PM | Registered Commenterstewgreen

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