[m463]

I don't see why there can't be load resistors (like locomotives use) to gracefully handle these sorts of situations.

[jeffbee]

An SD40 locomotive can dissipate about 500kW that way, so you would need the equivalent of 2000 locomotives worth of resistors and fans to sink the 1 or 2GW or more that a fission power station produces.

[rcxdude]

If you wanted to do so continuously. If you're just handling an impulse you don't need so much, but it's gotta absorb a lot of energy quickly.

[Qwertious]

Well if you can solve it, I imagine there's a lot of money to be made - and yet it hasn't been solved.