Europe's green energy policies empowered Russian President Vladimir Putin and stripped Western countries of their ability to sanction Moscow effectively, according to the best-selling author of "Apocalypse Never."

"You're not really an independent nation if you depend on foreign countries so heavily for your energy supplies," Michael Shellenberger told Fox News. He said European nations have become increasingly dependent on Russia for energy in recent years as they have adopted green policy initiatives.

The continent imports nearly 40% of its gas from Russia, according to the Associated Press. It consumes nearly five times as much oil as it produces, and Russia produces nearly four times as much oil as it consumes, according to British Petroleum

Europe's dependency on Russian energy limits its ability to take actions such as imposing economic sanctions against Russia in response to the conflict in Ukraine, according to Shellenberger.

Michael Shellenberger, best-selling author of "Apocalypse Never" 

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"Fifteen years ago, Europe produced more natural gas than Russia," Shellenberger said. "Today, Russia exports three times more natural gas to Europe than Europe produces." 

"That's due both to the fact that Russia increased its natural gas production and Europe reduced it," he added.  

Green energy policies have made Europe dependent on Russia

"Europe decided not to frack in large part in response to climate activists," Shellenberger told Fox News. "We now think there is strong evidence suggesting [the climate activists] were supported directly through financing from Russia." 

Moscow intelligence agencies, for example, secretly supported European environmental groups in campaigns against fracking in order to keep the European Union dependent on Russian exports, according to a 2018 congressional report.

Russian President Vladimir Putin (Reuters)

But environmental activist groups do not disclose their donors, so any benefactors of Russia’s donations remain unknown, according to Shellenberger.

Additionally, Europeans became more reliant on Russian energy because of nuclear energy policies.

Putin "expanded nuclear power at home so that he could export more natural gas abroad rather than use it for electricity production," Shellenberger said. "Europe shut down its nuclear plants and declined to build new ones."

Russia's nuclear power capacity has increased by 33% since 2002, according to the World Nuclear Association. Germany's nuclear capacity has decreased by over 80% in that time period.

"That has proven to be catastrophic as the continent became increasingly dependent on Russia for energy imports," Shellenberger told Fox News. 

Shellenberger described rising oil costs and foreign dependencies as "the worst energy crisis since 1973." 

"I think the chances are very high that it's going to result in a global recession," Shellenberger told Fox News. "When oil prices reach these levels, they tend to trigger recessions."

DataTrek Research co-founder Nicholas Colas recently told Barron's: "History shows that a 100% increase in oil prices over a year usually triggers a recession (1990, 2000, 2008). We’re not quite there yet, but we are getting closer by the day.

Crude oil reached $130 per barrel Sunday evening, according to CNBC. A year ago, it was $63.81.

Shellenberger said oil prices could hit $200 per barrel. 

European reliance on Russian energy leaves Western countries with little leverage against Putin in the ongoing conflict in Ukraine, according to Shellenberger. 

President Biden announced on Tuesday a ban on U.S. imports of Russia oil. Last year, the U.S. imported 7% of its petroleum from Russia, according to the U.S. Energy Information Administration.  

"Our hearts are with the Ukrainians," Shellenberger said. "We would love to be able to punish the Russians and stop importing their energy, but efforts to do that will make energy more expensive."

The logo of Russia's oil company Lukoil is pictured at one of its petrol stations in Moscow on April 16, 2021. (Photo by Kirill KUDRYAVTSEV / AFP) (Photo by KIRILL KUDRYAVTSEV/AFP via Getty Images)

"It was always predictable," Shellenberger said of the energy crisis and European dependence on Russian energy. "This was all very apparent to people that were rational thinkers on energy."

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Prosperity, sovereignty and energy independence are all interconnected, according to Shellenberger.

"There is no low-energy rich nation, just as there is no high-energy poor nation," he said. 

"I hope it’s a wake-up call," Shellenberger told Fox News. "At best, we can hope to avoid a global recession, but that's going to require a significant expansion of energy supplies in the United States and Europe as quickly as we can."