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Critical of Nuclear…. Or Nuclear is Critical (to net zero)

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David Cole's picture
Director SNC-Lavalin

David Cole is Director of SNC-Lavalin Power business in UK and Europe. This includes activities on operational nuclear power stations, conventional power stations, electrical networks (T&D)...

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In a debate on our company message board on nuclear power the following 7 questions or points elicited the response that forms this article, they were:

  1. The radiation risk standing next to nuclear power station (what sparked the discussion);
  2. That when things go wrong the events are catastrophic and impact thousands of lives and the environment;
  3. The long term storage of waste has not been resolved;
  4. That waste and decommissioning of nuclear power is an expensive additional cost;
  5. That a nuclear power station is expensive compared to offshore wind (the £92.50 vs £40 per MWh comparison);
  6. That nuclear power will lead to increased electricity prices and some countries are moving away from nuclear altogether such as Germany;
  7. How proven is the technology for HPC.

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Here is the response, it has a UK focus but the debate is applicable to many regions. To be honest I could add even more to this in terms of data since then, particularly around the environmental impact of rare earth metal extraction, but this as it was written (quickly) at the time.


I think there are around seven points in here that you are making and I'll try to take each in turn. However, in answering these I am going to suggest further reading as it would be an even longer response (!) if I was to cover all the points in detail.


As an intro though I’d ask you to read the following from the late David MacKay:

David MacKay’s foreword to COP21 edition of Climate Gamble | Climate Gamble


Idea of renewables powering UK is an 'appalling delusion' – David MacKay | Energy | The Guardian The video in the Guardian article is very much worth watching.


So points 1 and 2 are exposure at sites where issues have occurred in the past and when things do go wrong can affect a lot of people, first a couple of links:

From Our Own Correspondent - Remembering Fukushima - BBC Sounds (first article on this podcast)


Fukushima radiation did not damage health of local people, UN says | Fukushima | The Guardian


The initial cover up of the Chernobyl disaster and volume of press coverage around Fukushima have undoubtedly inflated this misconception. There is a wealth of information out there on the topic, one viewpoint that provides an interesting insight is based on deaths per kwh of energy sources, you can read more on this here:

What are the safest and cleanest sources of energy? - Our World in Data

It’s not just deaths of course but pollution, impact of sourcing raw materials, waste products etc. I really recommend reading this whole article. And there are loads more resources out there and books.


Question 3 is on long term storage and the need for this to be resolved – in short yes but also this is already priced into new nuclear (which is question 4) as part of waste and decommissioning. What not priced into our current energy system is managing the legacy waste and decommissioning from and of renewables and the associated system such as batteries. The amount of materials required and waste is a whole topic in itself and it is not in the debate and it needs to be as well as the energy cost and emissions of manufacture. Rule of thumb 1 tonne cement = 1 tonne Carbon and 1 tonne of steel = 1.8 tonnes of carbon. Not including all the wires and substations and other stuff then required of course.


See below for some examples:




Whilst we are talking materials (I’m a metallurgist….) let’s also look at sourcing them. The amount required for a renewables heavy system as we have seen is significant – including Lithium for batteries for both system mgmt. and EVs (which are then hard to recycle). Have a look at this reference from the natural history museum just for the UK:

We need more scarce metals and elements to reach the UK's greenhouse gas goals | Natural History Museum (

It’s not just how much we need, it’s where we get it from and the impact that has. Just have a look at how we get Cobalt on some ethical questions as well as environmental.


Question 5 is on price. Let’s talk numbers – you have compared the project cost to EDF and the CfD price of £92.50 to a price of OSW of approx. £40/MWh. Please read our Engineering Net Zero (Reports Archives - Engineering Net Zero) reports where we cover this topic in depth. Let’s break down the myths with some of the key points:


1. Comparing levelised cost of electricity is not the same as what we the consumer pays. Rising systems costs due to intermittency means we pay more than just the £40/MWh as you include the need for back up etc., new transmission systems etc. the need for hydrogen as energy storage etc. as well as renewable obligations in our bills

2. We currently don’t have any £40/MWh turbines operating. What we currently have is a fleet on average is at a CfD of just over £100/MWh. We are yet to see the new turbines built)

3. Wind started off at CfDs of over £150/MWh

4. From the 2020 treasury report on infrastructure we currently pay £10bn per year for renewables (NIS_final_web_single_page.pdf ( page 50), just for info.

5. Waste and decommissioning is not included in the price


Whilst comparing apples with pears (firm v intermittent costs) there is also another fundamental issue. People are comparing a future theoretical price of OSW with the current price of nuclear. If the future OSW price is to be reduced - and by all accounts we hope it will - then we should also assess whether nuclear is able to achieve the same downward price trend. Evidence from HPC suggests the learning from Unit 1 has already meant that progress on Unit 2 has been between 20% and 30% quicker/cheaper, with further learning also to be taken to any future units such as SZC. So actually, the evidence suggests that adopting a similar fleet approach that has benefitted OSW will also benefit nuclear, before we even consider cost of financing approaches that would further drive down the cost.


Don't get me wrong, I’m not against renewables at all and I think we need everything to reach net zero - but I don’t think we should comparing two numbers together that are not really same thing.


We are just about to publish a report on the retail market which will also cover some of these myths – please keep an eye out (now published - enz-retail-market-paper.pdf ( The previous ENZ papers also cover what is needed to bring the price of nuclear down. Over 40% of the price is financing and this can be significantly reduced which is part of the current govt focus on the RAB business model. Further reductions can be made from having a sustainable build programme and next of a kind build to reduce engineering and construction costs. Can this be done at pace – yes – ref the build rates in France, Sweden etc. Do we need it? Absolutely - look at the build rate required analysis in ENZ (the-race-to-net-zero.pdf (


So on to the next question on system prices and tying us into high prices in the future and you mention Germany’s move away from nuclear (if you watched the David Mackay interview by now you may have guessed where this is going…). Let’s look at Germany. When we look at the reducing costs of solar, wind and batteries one might conclude that a rising share of these things will introduce an era of falling electricity prices. In reality the opposite has been true. Before 2000 and embarking on a comprehensive expansion of renewable generation German residential prices were some of the lowest in Europe and declining at less than 0.14 Euro/kWh. By 2015 Solar and Wind was at 84GW and exceeding fossil fuel plant capacity and by March 2019 more than 20% electricity was coming from renewables. In 2019 Germany’s electricity prices had more than doubled to 0.29 Euro/kWh and now has the EU’s second highest electricity price second only to Denmark (41% wind generation in 2018) at 0.31 Euro/kWh. (Ref: Vaclav Smil: The numbers don’t lie). We need to assess on a system cost basis.


Final question is proven reactor technology. Any technology needs developing into commercial use – this has happened in wind, solar, nuclear and in any generation technology deployed at scale. HPC is not unique – a global EPR fleet is being built and growing and being commissioned: The 2nd EPR reactor at China’s Taishan nuclear power plant | EDF ( This means there will also be global OPEX – a far better position than we have with the UK unique AGR (advanced gas reactor) fleet which whilst not built anywhere else yet has reliably provided us with zero carbon electricity for many decades and we are really going to miss as they start to close in this decade – along with a lot more firm power in the UK and interconnected Europe. We will no doubt look forward to more records falling on our system – more electricity margin notices (6 this winter, the first since 2016 where there was just one when the French nuclear fleet had reduced output) and record prices, January averaged £77/MWh peaked at £1400/MWh etc.. (for some reason this seems to get less media coverage than a low carbon Easter weekend for example). In any case I really recommend downloading the electricity map app and you can see live generation sources for many countries and the associated carbon footprint of that country.


So in summary my view is we must not think about any technology in isolation and we need to consider the following, comparing on a like for like basis and system operation (energy trilemma) and taking it back to comparable numbers on a like for like basis:


· Whole system cost

· Whole energy cost and carbon life cycle

· Environmental impact, land and sea use

· Material consumption – mining, environmental damage, competition for materials, recycling etc.

· Decommissioning and Waste mgmt. – significant amounts of hard to recycle toxic waste from solar and batteries as well as large wind components (i.e. blades) is a future environmental challenge in waiting and needs to be addressed


Just to finish up:

Patrick Moore (former Greenpeace International director): "We made the mistake of lumping nuclear energy in with nuclear weapons, as if all things nuclear were evil. I think that’s as big a mistake as if you lumped nuclear medicine in with nuclear weapons."


I’d like to know if anyone thinks nuclear medicine is a bad thing...

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Bob Meinetz's picture
Bob Meinetz on Jun 11, 2021

"Don't get me wrong, I’m not against renewables at all and I think we need everything to reach net zero - but I don’t think we should comparing two numbers together that are not really same thing."

David, I'm not opposed to renewables at all, either. Or bicycles, for that matter. As a cyclist who rides 2,000 miles/yr I enjoy it tremendously - it's great cardiovascular exercise, and an opportunity to meet socially with like-minded individuals.

I am opposed to people who think everyone should ride bicycles - that they're the ultimate solution to urban transportation (yes, those people exist). They're elite hypocrites, who have no qualms jumping in their SUVs to run errands - or visit an ATM that's within walking distance.

Similarly, I'm opposed to the idea everyone should depend on renewables for electricity. They're elite hypocrites, too, who have no qualms about relying on polluting gas-fired generation whenever the sun and/or wind aren't available, or raising the price of electricity for less fortunate people who share the same grid.

I'm opposed to the false promise of renewable energy. So if putting solar panels on their roofs makes other people feel better, fine. But don't tell me or anyone else they're helping to fight climate change, because they're only pushing a solution farther away so they can feel better about themselves - and if that isn't selfish, I don't know what is.

Jim Stack's picture
Jim Stack on Jun 14, 2021

A very interesting article. All the facts you listed show just how expensive Nuclear is. You didn't even mention the water use, the limited fuel of uranium from Russia or the factor it can be ramped down and up to match the customer demand. 

   Yet you think it failed by being lumped with nuclear weapons. What is you final view of Nuclear power?

   Do you have a nuclear power plant that is on your roof and runs your home like me? 

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