yes but you have to make the antimatter first which takes huge amounts of energy, then store it which also takes energy.
You could whoever use it for extremely energy dense fuel.
So you could say make it in huge land facilities using large conventional power plants to power submarines or spaceships (if you can store it for a long time and the reactor is small enoguh to make sense.
Although if both the antimatter particle and it's mater counter part are converted 100% into energy.
You only need to make sure the process you make and store antimatter is less than that total energy so say it could take 150% of the energy release by the antimatter particle to make, but you'll still get 50% of the energy from the matter particle destroyed as "profit".
which could mean you could make a energy profitable antimatter matter power plant but i don't think you're going to see the production becoming that efficient.