Powergen rhymes with:
energen, synergen, biogen, bruntjen, energen, neupogen, nexgen, synergen, urgen, airmen, biogen, bruntjen, bullpen, businessmen, canadienne, energen, euroyen, flagmen, gunmen, julianne, longden, mahen, mailmen, middlemen, minutemen, neupogen, nexgen, parisienne, playpen, repairmen, shenzhen, synergen, tiananmen, turkmen, uniden, urgen, valencienne, weathermen
Powergen sounds like:
paragon, paraguayan, parchman, parisian, parisienne, parkin, parkison, parkman, parsimony, parson, pearson, peerson, pehrson, peirson, peragine, percussion, pergamon, perignon, perkin, perricone, persian, person, persona, personae, persson, persuasion, persyn, perugina, perugini, perzigian, pharisaism, pherson, phrygian, pieraccini, pierson, precession, precision, prejean, pressman, presson, presume, prezzano, prism, prison, prizm, procaccini, procaine, procassini, procession, prochnow, progeny, prussian, purgason, pyroxene