Two single-phase transformers, rated 1000 kVA and 500 kVA respectively, are connected in parallel on both HV and LV sides. They have equal voltage ratings of 11 kV/400 V and their per unit impedances are (0.02 + j 0.07), and (0.025 + j 0.0875) Ω respectively. What is the largest value of the unity power factor load that can be delivered by the parallel combination at the rated voltage?