Voices calling for Japan to ramp up its use of nuclear power are getting louder, but a rapid return is unlikely even as the nation faces another possible energy crunch this summer.

The global power crisis is causing electricity bills to surge in Japan, while war in Ukraine is pressuring the country to seek alternatives to Russian energy. The fragility of the nation’s power grid was exposed last month when the one-two punch of a strong quake and frigid weather nearly delivered a blackout to Tokyo.

With few resources available to build capacity, and the threat of another power shortage looming with the return of hot, humid weather, lawmakers from both the ruling party and opposition are calling for a quick restart to reactors. Public support is also growing, as a recent survey showed a narrow majority in Japan now support turning idled plants back online.