  We assess the power consumption of network synchronisation protocols,
particularly the energy required to synchronise all nodes across a network. We
use the widely adopted approach of bio-inspired, pulse-coupled oscillators to
achieve network-wide synchronisation and provide an extended formal model of
just such a protocol, enhanced with structures for recording energy usage.
Exhaustive analysis is then carried out through formal verification, utilising
the PRISM model checker to calculate the resources consumed on each possible
system execution. This allows us to assess a range of parameter instantiations
and to explore trade-offs between power consumption and time to synchronise.
This provides a principled basis for the formal analysis of a much broader
range of large-scale network protocols.
