  This paper establishes the possibility of utilising energy harvesting from
mechanical vibrations to estimate extreme value responses of the host structure
and demonstrates the calibration of these estimates for excitation spectra
typical to natural systems. For illustrative purposes, a cantilever type energy
harvester is considered for wind excitation. The extreme value estimates are
established through a Generalised Pareto Distribution (GPD). Classically
well-known Kaimal and Davenport spectra for wind have been considered in this
paper for comparison purposes. The work also demonstrates how return levels can
be mapped using energy harvesting levels and indicates that vibration energy
harvesting, in its own right has the potential to be used for extreme value
analysis and estimates. The work has impact on health monitoring and assessment
of built infrastructure in various stages of repair or disrepair and exposed to
nature throughout their lifetime.
