[[energy_logistics|]]

====== Storage ======


===== Capacity of Storage we need? (UK example) [Sir Llewellyn Smith 2023] =====

"First of all, it depends: there's this trade-off between how much you're prepared to build of wind, and how much storage. We need, with just hydrogen, we need between about 60 and 100 terawatt hours. Now, to put that in context, the UK today is using about 300 terawatt hours a year of electricity. So, the energy that's got to be the capacity has to be **about a third of the annual electricity generation** in this country."

 

Transcript from Ep122: Sir Chris Llewellyn-Smith "Solving for Storage" March 2023 [[https://www.cleaningup.live/p/ep122-eh/]]

[[https://www.cleaningup.live/ep122-sir-chris-llewellyn-smith-solving-for-storage/]]

 

===== Cost of power per megawatt hour? (UK example) [Sir Llewellyn Smith 2023] =====

"CL-S So, if we have wind and solar 33% bigger than demand, assuming that wind and solar costs £35 per megawatt hour, then I've got to pay 1.33 x £35 for the wind and solar. Then there's 15% has to come from storage. Now, the storage that will deliver 15% costs me about - in our middle case - £80 per megawatt hour. So, I've got 1.33 times £35 plus 15% of £80. So, I end up with a cost of about £60 a megawatt hour. Then I add a bit of contingency, I add about £4 for transmission. So, in that simple model, I end up at £64 per megawatt hour. But that’s a central case. We then we had to assume a discount rate, and different costs of storage. So, we got a range, including the contingency and the extra transmission, from **about £52, up to just over £90**. That's with the top storage costs."

Transcript from Ep122: Sir Chris Llewellyn-Smith "Solving for Storage" March 2023 [[https://www.cleaningup.live/p/ep122-eh/]]

[[https://www.cleaningup.live/ep122-sir-chris-llewellyn-smith-solving-for-storage/]]

===== Very Long Store (VLS>180 days, or 1 year) (UK example) [Sir Llewellyn Smith 2020] =====

{{ :storage1.png?600 |}}

[[https://www.era.ac.uk/write/MediaUploads/Other%20documents/Need_for_Storage_in_a_Net_0_World_Chris_Ll_S_23_3_20.pdf]]

===== Candidate Storage Technologies [Llewellyn Smith 2020] =====

{{ :storage2.png?600 |}}

Source: The Need for Energy Storage in a Net Zero World [Llewellyn Smith 2020] [[https://www.era.ac.uk/write/MediaUploads/Other%20documents/Need_for_Storage_in_a_Net_0_World_Chris_Ll_S_23_3_20.pdf]]

===== The Need for Energy Storage in a Net Zero World - (Conclusions with UK Focus) [Sir Llewellyn Smith 2020] =====

{{ :storage3.png?600 |}} 

[[https://www.era.ac.uk/write/MediaUploads/Other%20documents/Need_for_Storage_in_a_Net_0_World_Chris_Ll_S_23_3_20.pdf]]

===== Questions about Candidate Storage Technologies [Sir Llewellyn Smith 2020] =====

{{ :storage4.png?600 |}} 

[[https://www.era.ac.uk/write/MediaUploads/Other%20documents/Need_for_Storage_in_a_Net_0_World_Chris_Ll_S_23_3_20.pdf]]


~~DISCUSSION|Discussion Section~~