Stop Sizewell C! Wrong Project, Wrong Time, Wrong Place.

Sizewell C is too slow and expensive compared to alternatives in the fight against Climate Change and the construction of two new nuclear reactors on the Suffolk coast will have a devastating impact on this unique and magical place. Final go ahead was expected in the last parliament, but the Labour government now has an opportunity to reconsider this ill-advised project. For more information, read our briefing “Why Stop Sizewell C?’ here.

WHAT YOU CAN DO…

Visit our TAKE ACTION PAGE for our online campaigns. These include:

• Ask the Prime Minister, Chancellor and Energy Secretary to Cancel Sizewell C.
• Message your MP and ask them not to support Sizewell C.

Campaign Success! We have managed to deter almost all pension funds from investing in Sizewell C. The video below explains why they should not invest, but we still need your help to tell the few other investors (including one pension fund) why they should keep their money out of slow, risky, expensive #nuclear Sizewell C.  www.action.stopsizewellc.org/.  

• Join Us! We urgently need your support. Sign up here to receive email updates. To contact us, email info@stopsizewellc.org.
• Donate. We are raising funds for our legal action. If you are able to give, please visit our special fundraising page www.action.stopsizewellc.org/legalchallenge

StopSizewellC on X (Twitter)

Stop Sizewell C Follow

Stop Sizewell C opposes EDF's proposals for twin nuclear reactors at Sizewell in Suffolk. Contact us via info@stopsizewellc.org (as DMs are sometimes hidden)

Stop Sizewell C @stopsizewellc ·

15 Feb

Photo sent by a supporter, pretty much sums up the state of play around here - #Leiston's Valley Road #wildlife area is sandwiched between two #SizewellC construction zones. The area has been completely transformed in just a couple of months!
#StopSizewellC

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Stop Sizewell C @stopsizewellc ·

15 Feb

.@Jenny4SuffCoast is "pulling together a #Suffolk Coastal Energy taskforce, including parish councillors, community leaders & energy developers to better co-ordinate plans". @energygovuk said "Communities will continue to have a voice"(!😱!)
#StopSizewellC

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Retweet on Twitter Stop Sizewell C Retweeted

Jan Rosenow @janrosenow ·

13 Feb

“The more we’ve learnt about how to do nuclear power, the more expensive it’s got. That’s the opposite of what usually happens.”

Quote from Prof. Bent Flyvbjerg in great piece by FT on why so many nuclear projects get a) delayed and b) are over budget.

https://www.ft.com/content/5e563e3f-575d-4a90-bd46-4d0a3083f707

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Stop Sizewell C @stopsizewellc ·

14 Feb

'Nothing prepared us for Sizewell C devastation'. In case you missed it: BBC Look East 11 February reporting the impacts of #SizewellC despite it not having made a Final Investment Decision. #StopSizewellC Part 1/2

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StopSizewellC on Facebook

Stop Sizewell C21 hours ago

😲 "#EDF’s two UK #nuclear construction projects at #HinkleyC and #SizewellC should be negotiated as a single financial venture, France’s energy minister has urged, to prevent the French energy group shouldering significant cost overruns"
#StopSizewellC

EDF’s new UK plants should be negotiated as one, French energy minister says

French group has been concerned about shouldering cost overruns of Hinkley Point and Sizewell nuclear projects

721View on Facebook

Stop Sizewell C1 day ago

"#StopSizewellC said concerns about water supply to the site had been one of the major worries of opponents of the [#SizewellC] project"

3638View on Facebook

Stop Sizewell C1 day ago

"Steve Thomas of Greenwich University said the cost of decommissioning should be taken into account when the government decided on new #nuclear plants as “no scheme can be guaranteed to meet a cost more than a century into the future”.

#StopSizewellC

Scottish nuclear plant emptied of fuel as UK winds down ageing gas-cooled reactors

First of seven plants to be decommissioned took just three years but it will take almost a century to eradicate radiation from land and buildings

1822View on Facebook

Stop Sizewell C2 days ago

Only ONE green group (@GreenAllianceUK) at today's #EnergySecurity Summit in London, though lots of oil & gas bosses and reps from #SizewellC and #EDF. #StopSizewellC and @tasizewellc held a banner outside warning Ministers not to announce a Final Investment Decision!

1541318View on Facebook

Stop Sizewell C2 days ago

On our way to protest at the Summit on the Future of #EnergySecurity where #SizewellC is on the guest list. How can there be energy security in #nuclear reactors that are late, not working (like Taishan for 2 years) and reliant on French tech and overseas uranium?

For more info and to read our submission to the Spending Review, see https://stopsizewellc.org/spending-review-question-3/

#StopSizewellC

Spending Review Qs 3 - Stop Sizewell C

In February 2025 Stop Sizewell C, with Professor Steve Thomas of Greenwich University Business School and Tom Burke, Founder of E3G, made the following submission to the government’s multi-year Spending Review. For the answers to this question, read here: Stop Sizewell C et al Spending Review Subm...

3177View on Facebook

Stop Sizewell C4 days ago

It's #EarthDay, so worth resharing this image of #Suffolk devastation, with a Save the Date reminder for an #OutrageRally at #Sizewell beach, 7 June 11-12.15/30.
#StopSizewellC Together Against Sizewell C

6943View on Facebook