Russia’s invasion of Ukraine is upending the global transition away from fossil fuels in the fight against climate change.

In some ways, the war is slowing the shift and giving old energy new life. In others, it’s bolstering the argument that adding more electric vehicles to roads and installing additional wind turbines and solar panels can boost energy independence. In some places, both are happening at once.

This much is clear: Without Russian energy, countries around the globe are being forced to make hard choices on how to fuel their economies, putting the energy transition at a crossroad.