Modern integrated circuits have an increasing need for various levels of both supply voltage (V) and operating frequency (f) available at fine spatial and temporal granularity. This work introduces a solution that provides a number and quality of locally distributed V/f domains through FOPAC. Opportunistically sharing design resources and features between multi-phase voltage regulators (MPVRs) and resonant rotary clocks (ReRoCs) enabling i) the scalability to hundreds of domains, ii) fast switching times for both voltage and frequency, leading to temporal flexibility, and iii) locally distributed designs, leading to spatial flexibility.