wind curtailment

[Swwils]

It would be stupendously expensive, generators won't fork out for it.

Better to think of it as extra incentive to fight some NIMBYs - I have my doubts in this as even in easy to build areas they don't place farms where needed anyway.

I'm still waiting on these promised profitable 15MW units, I expect it may all unravel beforehand anyways.

Again, we owe it to civilisation to make energy cheap.

[Coriolis]

Given that the majority of the generation is North and the bulk of the load is based in the South would a shallow submarine cable or two laid along the coastal waters be a cheaper easier solution to transmission costs compared with a land based solution ?

Apologies if this already exists.

Moxi

The 2.25 GW subsea Western HVDC Link from Hunterston to North Wales has been operational since 2019 (albeit with some teething troubles).

https://site.ieee.org/pes-hvdcfacts/fil ... rnLink.pdf

Two further 2 GW HVDC links are planned off the East Coast. Previously know as Eastern HVDC they're now known as Eastern Green Link 1 (Torness to Hawthorn Pit) and Eastern Green Link 2 (Peterhead to Drax). Target completion dates are 2027 and 2029 respectively.

https://www.nationalgrid.com/electricit ... 6/download

https://www.ssen-transmission.co.uk/pro ... en-link-2/

[Ken]

I dont think those on latest CfD get paid when price goes negative for more than 6hrs and so they switch off without any curtailment payment. Whereas the older ones get CfD payments payed whenever they produce.

The times of being paid for nothing cannot continue surely and the wind etc will have to take the commercial risks in the same way as say gas does now although in future it will be the gas that gets subsidised.

[dan_b]

This sounds like an answer from the self-appointed HVDC Interconnector Nerd to answer!

In short - yes and we already have one.
In detail - and more are planned.

In 2019, the Western Bootstrap went online - a 2GW HVDC transmission line between Hunterston in Western Scotland and Flintshire Bridge in North Wales. Specifically designed to shift excess renewable generation in Scotland down south.

2 more are planned on the East of our Island, to shunt another 4GW of power down south - both will route the cables out at sea.

SEGL1 will run from Torness in Scotland, to Hawthorn Pit in NE England. Construction is due to start this year - complete in 2027.
EGL2 will run from Peterhead in Scotland to Drax in NE England. Construction to start in 2024, to complete by 2029.

Given that the majority of the generation is North and the bulk of the load is based in the South would a shallow submarine cable or two laid along the coastal waters be a cheaper easier solution to transmission costs compared with a land based solution ?

Apologies if this already exists.

Moxi

[Ken]

+ some of the AC cabling in the north is being uprated and they will be introducing cable limits based on temp ie more capacity in winter just when it is needed.
https://www.nationalgrideso.com/documen ... 6/download