Power Reliability

Nuclear power plants, fuelled by uranium, are valued for their ability to deliver reliable, base-load electricity. Unlike solar and wind, which depend on weather conditions, nuclear reactors can operate continuously, providing consistent energy output. This makes them especially valuable for maintaining grid stability in both advanced and emerging economies.

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One measure of reliability is capacity factor, which reflects how often a power plant operates at maximum output. Nuclear power plants typically achieve capacity factors of around 90%, significantly higher than wind or solar, which range between 25% and 35%. This ability to operate almost continuously underscores nuclear’s role as a foundation for electricity supply.

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Reliability is also linked to predictability in fuel supply. Uranium is compact and efficient, allowing reactors to run for long periods before requiring refuelling. In some cases, plants operate for 18 to 24 months between refuelling outages. This predictability is different from fossil fuels, which often rely on frequent imports and can be subject to market disruptions.

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By ensuring stable output, uranium complements renewable energy sources. As more solar and wind capacity is added worldwide, nuclear power helps balance variability, ensuring that electricity grids remain resilient. For many countries, this balance is central to long-term energy security strategies.

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Although nuclear energy requires high initial investment and careful management, its ability to deliver reliable electricity over decades of operation remains a key reason why uranium continues to feature prominently in global energy planning.