Nuclear

Replacing fossil fuels with nuclear has high potential to decrease emissions, but requires public buy-in.

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  • ~30%
  • Global fossil fuel electricity emissions account for ~30% of anthropogenic GHG on a CO2-equivalent basis.

Emissions

Global greenhouse gas emissions – share of total (2019).

Background

Nuclear is a particularly attractive alternative to fossil fuels in the power sector given limited land use requirements, competitive marginal costs of electricity, and relative safety.

  • Nuclear
  • alternative to fossil fuels.

However, nuclear has historically had poor public perception due to high-profile nuclear accidents (e.g., Fukushima).

  • High-profile
  • nuclear accidents impact public perception.

Source: Climate Watch; Our Word in Data; IEA; EIA

Current State

Globally, nuclear supplies ~10% of all electricity generation. In the U.S., nuclear provides ~18% of utility-scale electricity generation.

To enable decarbonization in the power sector, the IEA’s Announced Pledges Scenario projects a ~50% (~200 GW) increase in nuclear capacity by 2040.

Nuclear is positively trending, as 50+ countries (e.g., Finland and France) have plans to build new reactors.

Solution Details

A large portion of the existing nuclear fleet is nearing the end of its originally planned operational life, but regulatory approval for lifetime extensions could allow these facilities to continue operation.

The economic case for nuclear would be greatly improved by delivering new projects on-time and on-budget.

Disposal of radioactive waste also poses a barrier to the continued expansion of nuclear.

Other Solutions

Coal-to-X switching

Coal-to-X switching

Heat pumps

Heat pumps