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Nuclear energy

Nuclear energy is a cornerstone of the UK’s strategy to provide reliable, low-carbon electricity. Decommissioning old nuclear sites is a vital part of this mission, ensuring safety and environmental protection while supporting the country’s green economy.

Global leaders also recognise nuclear benefits. At COP28, 22 countries committed to tripling nuclear capacity by 2050. With investments rising, nuclear energy is set to play a crucial role in a clean, secure energy future.

Picture of a nuclear power station with a blue sky in the background

Introducing nuclear energy

The nuclear sector is essential for producing reliable and low-carbon energy, currently generating approximately 16% of the UK’s electricity. Beyond power generation, the sector supports agriculture, medicine, and industry, all while emphasising safety and sustainability. Nuclear power is crucial for energy security and has a positive impact on our daily lives. Decommissioning plays a critical role in the nuclear lifecycle, ensuring that old sites are safely dismantled and repurposed.

The importance of going green

The UK Government aims to reach net zero by 2050, balancing greenhouse gases released with those removed from the atmosphere to combat climate change. Energy consumption is expected to double by 2040, so clean energy sources are crucial. Nuclear power is key to achieving net zero. Globally, it is displacing 1.6 gigatonnes of CO₂ annually and has prevented an estimated 66 gigatonnes since 1971. Supplying 10% of the world’s electricity, nuclear is a top non-emitting option, especially where hydro isn’t available. 

Unlike wind and solar, nuclear power isn’t weather-dependent, making it a reliable energy source. New-generation plants can operate for up to 80 years, far outlasting gas and coal plants. Plus, operationally, nuclear energy is low carbon – with zero greenhouse gases associated with the electricity production process – and it avoids air pollutants from fossil fuels. 

Nuclear power stabilises the grid, backing up renewables like solar and wind. It can replace multiple coal plants and decarbonise industries like steel production. Uranium, the fuel for nuclear power, is energy-dense and less sensitive to price changes, ensuring a stable supply. 

Nuclear energy has a low carbon footprint and takes up less land compared to some other energy sources. It’s also the second safest energy source, with well-managed waste. Despite high upfront costs, nuclear plants produce competitively priced low-carbon energy over their long lifetimes. 

The nuclear industry meets three global goals for sustainable development: affordable clean energy (Goal 7), climate action (Goal 13), and decent work and economic growth (Goal 8). The sector provides thousands of jobs and will continue to grow, showcased by the UK’s commitment to building new Small Modular Reactors. Rolls-Royce, supported by a £210 million investment from the UK Government, are part of this effort, ensuring the construction of new reactors that will generate clean, affordable energy and create numerous jobs. 

In 2024, the UK's nuclear industry employed 86,908 people, a 12% increase on the previous year.
Just over a fifth (21.4%) of the nuclear workforce is female. To meet the 40% target by 2030, at least 50% of new recruits need to be women.
Around 2,350 new workers are needed annually until 2030, making now a great time to join this exciting field.
Information kindly supplied by:
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Nuclear Decommissioning Authority (NDA)

The NDA is a non-departmental public body created by the Energy Act 2004 to lead the clean-up and decommissioning work at our 17 sites on behalf of government

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ISEP logo with name

ISEP is the membership body for environment and sustainability professionals