That is correct. kW is used the same way as HP, except that kW is better standardized.
There are many definitions of how much power a horse has, and just one definition of the watt. For example: the 'mechanical' HP (commonly used in the US) is the equivalent of 0.7457kW, but the 'metric' HP (commonly used in Europe) is 0.7345kW [0].
You need low-speed torque with low fuel consumption to work at relatively high power output efficiently for long durations.