Optimizing the energy production in a fusion reactor requires a broad hot and dense region in the plasma core. The edge, however, should be cool in order to maintain the integrity of the first wall. In this work the confinement and heating profile of fusion alphas were studied in realistic JET geometry. The magnetic fields, as well as temperature and density profiles from four JET discharges, including two ELMy H-mode plasmas and two ITB plasmas with reversed q-profiles, were used as backgrounds for the simulations. The work was carried out using the Monte Carlo -based guiding-center-following code ASCOT. For the same plasma current, the ITB discharges were found to produce three to seven times more fusion power than the comparable ELMy H-mode discharge. Unfortunately, also the alpha particle losses were larger (10-16%) compared to the H-mode discharge (6%). In the H-mode discharges, alpha power was deposited to the plasma symmetrically around the magnetic axis, whereas in the current hole discharge, the power was spread out to a larger volume in the plasma center. This was due to larger particle orbits, and the larger spacing of the innermost flux surfaces.