What if this cheap energy also made it very easy to make, or even store a PetaJoule in a briefcase sized package? I could see very strong national security rea

What if this cheap energy also made it very easy to make, or even store a PetaJoule in a briefcase sized package? I could see very strong national security reasons to keep that very tightly controlled. Imagine a 1,000,000 Farad capacitor charged to 50kv