
As European leaders condemn Russia's unprovoked invasion of Ukraine and unspeakable violence against civilians, many have found themselves in an awkward situation: They need Russian gas to heat buildings and generate electricity. Roughly one-fourth of Europe's energy comes from natural gas, and as much as 40 percent of it flows from Russia.
To help wean Europe off Russian gas as soon as possible, some experts are now calling for a boost in nuclear power generation. Although nuclear power plants already represent an important energy source for the continent, at least 30 facilities have either recently been decommissioned or are slated to close in the next few years. Keeping them running could provide a reliable and low-emissions alternative to fossil fuels. The idea is controversial — especially because of fears of a meltdown — but advocates have argued that, in the face of a crisis, existing reactors should be kept online and those scheduled for retirement should be allowed to keep producing energy.