The PNG wind dataset is extracted from the 3TIER Global Wind Dataset, IRENA Global Atlas for Renewable Energy.
3TIER Global Wind Dataset can be downloaded from this link: https://irena.masdar.ac.ae/?map=324
There have apparently been no systematic estimates of wind energy since the 1970s when the best potential was estimated to be in parts of Central, Western, Milne Bay and New Ireland provinces and thePort Moresby area. These estimates (and recent evaluations of the old data) were based on modeling with very little actual wind gauging. Source: IRENA Lighthouse Country Report.