There has been much discussion, within the community of LENR "enthusiasts"--who have long been convinced of a "Fleischmann-Pons Effect"-- of whether this reaction/these reactions can scale-up.
They have been scaled up more than most people realize. See:
http://lenr-canr.org/acrobat/RouletteTresultsofi.pdf
The temperatures and power density demonstrated in these tests would suffice for nearly all practical applications. If the reaction can be controlled and this performance created at will, cold fusion will swiftly replace most other sources of energy. Even the need for palladium would not prevent this.