This work presents KOCL, a fully automated tool flow and accompanying software, accessible through a minimalist API, allowing OpenCL developers targetting FPGA-SoC devices to obtain kernel-level power estimates for their applications via function calls in their host code. KOCL is open-source, available with example applications at https://github.com/PRiME-project/KOCL. In order to maximise accessibility, KOCL necessitates no user exposure to hardware whatsoever.