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Nuclear - not the way ahead

‘Renewable energies consistently outperform nuclear power in terms of cost and deployment speed and are therefore chosen over nuclear power in most countries’ – so says this years independent World Nuclear Industry status report (WNISR). It notes that in 2023, 5 new nuclear reactors (5 GW) started up and 5 were closed (6 GW), capacity thus declining by 1 GW. So overall it says that nuclear energy’s share of global commercial gross electricity generation declined from 9.2 % to 9.1%, little more than half of its peak of 17.5 % in 1996. In 2023, total investment in non-hydro renewable electricity capacity reached a record US$623 billion, 27 times the reported global investment decisions for the construction of nuclear power plants, with solar and wind power capacities growing by 73% and 51%, respectively. Nevertheless, some countries are still pushing on with new nuclear, despite its poor economics , including the UK and Sweden. Sweden has mooted a new financing model but its critics say
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The politics of the transition – a tough ask

There are plenty of political issues to explore, if you are so inclined, in terms of how to move to a sustainable energy future. As Richard Heinberg argues, so far, we are not doing very well: ‘Despite trillions of dollars having been spent on renewable energy infrastructure, carbon emissions are still increasing , not decreasing, and the share of world energy coming from fossil fuels is only slightly less today than it was 20 years ago. In 2024, the world is using more oil, coal, and natural gas than it did in 2023. While the U.S. and many European nations have seen a declining share of their electricity production coming from coal, the continuing global growth in fossil fuel usage and CO2 emissions overshadows any cause for celebration.’ So, he says, driven by growth in energy demand, ‘we are not experiencing a real energy transition. All that humanity is doing is adding energy from renewable sources to the growing amount of energy it derives from fossil fuels’.  To change this dire

9.6GW of renewables backed in new UK CfD

131 new renewable energy projects have been approved in the UK’s new Contracts for Difference auction, surpassing the 92 projects in the previous auction in 2023, when no offshore wind projects were backed. In the new round, 9 offshore wind projects (5GW in all) got contracts, including Hornsea 3 and 4 off the coast of Yorkshire- which when built will be  largest and second largest wind farms in Europe. Floating wind also got a 400MW project in Scotland.  With 3.3 GW in all backed, solar also did very well, better than in the previous round. With planning rules now changing, the new round backed over ninety 5MW or more PV projects, including some large solar farms (of up to 49MW). With planning rules also changing for on shore wind, it’s also did well, with 22 projects, 990MW in all, 1 in England, 3 in Wales, the rest in Scotland, including 120 and 130MW projects. And in terms of new technology, 28 MW of tidal stream got backed, with HydroWing set to deliver 10 MW in Wales, while in S

Renewables beat nuclear - even with full balancing included

A new Danish study comparing nuclear and renewable energy systems (RES) concludes that, although nuclear systems require less flexibility capacity than renewable-only systems, a renewable energy system is cheaper than a nuclear based system, even with full backup: it says ‘lower flexibility costs do not offset the high investment costs in nuclear energy’.  It’s based on a zero-carbon 2045 smart energy scenario for Denmark, although it says its conclusions are valid elsewhere given suitable adjustments for local conditions. ‘The high investment costs in nuclear power alongside cost for fuel and operation and maintenance more than tip the scale in favour of the Only Renewables scenario. The costs of investing in and operating the nuclear power plants are simply too high compared to Only Renewables scenario, even though more investment must be put into flexibility measures in the latter’.  In the Danish case, it says that ‘the scenario with high nuclear implementation is 1.2 billion EUR

Green skills gap- what’s being done to narrow it

As I have noted in earlier posts , there is a green skills gap opening up in the UK, and it seems to be an expanding problem, as indicated by a report by the Royal Academy of Engineering (RAEng) and National Engineering Policy Centre, which I mentioned in an earlier post. It's worth looking at in detail. It says that  ‘about an additional 200,000 workers are needed by 2030 to meet expansion demand on top of those required to replace the existing ageing workforce.’ However, instead, it noted that there were ‘declines in key parts of the workforce and high rates of hard-to-fill vacancies in critical occupations such as engineering project managers, electrical & mechanical engineers, engineering technicians, welding and engineering construction trades (e.g. crane drivers, steel erectors) alongside a wide range of other occupations key to energy transition’.  At the same time, it said ‘we are seeing stagnation or reduction in the supply of young people into these roles. Apprentic

China - wind and solar overtake coal

China has been pushing ahead with renewables on a very large scale- stunningly so. Four times faster than the G7 country norm. It’s on track for having 1,200GW of wind & PV installed  by the end of 2024 - 6 years ahead of its government target. But there are issues- so far it’s not been enough to meet rising demand and there are problems with rapid expansion.  As I noted in an earlier post , although its renewables capacity is expanding rapidly, the actual amount of power delivered to users in not increasing quite so fast- power is being lost due to poor grid links, congestion and curtailment. Major efforts are being made to deal with this, with a vast new supergrid network being built to link to remote areas where much of the green energy resource is located. However, some say that the data we have available on the final result in terms of green power usage is not always reliable and some has allegedly been blocked .   A perhaps an even more worrying issue from a global perspecti

Fast ahead for UK renewables - says RAEng

A report by the Royal Academy of Engineering and the National Engineering Policy Centre on the ‘Rapid decarbonisation of the GB electricity system’ sees offshore wind as the main way forward for the UK, but also says that ‘onshore wind and solar can be built quickly and help to provide a step change in delivery of renewable generation, especially if built in places where the transmission grid already has capacity to absorb it.’ It notes that ‘hitherto, the constraints have been grid connections and planning and consenting, with the planning system treating wind and solar quite differently’, so Labour’s ‘post-election amendment to the National Planning Policy Framework & announcement of an intention to consult on returning onshore wind to the NSIP regime is therefore a significant step’.   However, offshore wind will continue to lead, although it says  ‘the UK needs to significantly accelerate progress towards already stretching plans for 50 GW of offshore wind by 2030, from about