Decaying generator tubes helped push San Onofre's Unit 1 reactor into retirement in 1992, even though it was designed to run until 2004.

NPR: San Onofre Submits Draft Linked To Restart Bid

Taking to Crowd Supply for funding, Gridcase's Reactor features an internal 400mAh battery and a crank-powered 500mAh generator that allows users to manually distribute power to their phone's fading cell.

ENGADGET

Each of the reactors will be a small, modular, 125MW advanced light water reactor, which at the present time includes a design for the nuclear core and steam generator to be located at the same site, with passive safety designs.

FORBES: TVA Signs Deal for Modular Nuclear Reactors