https://openei.org/wiki/PRIMRE/Basics/Ocean_Thermal_Energy_Conversion
Authors. PRIMRE / OpenEI
Venue. basics (US Department of Energy)
How the Institute flags it
established 2 times frontier 2 times
This source carries more than one flag across the corpus. That is not an inconsistency to resolve: the same work can be established evidence for one claim and frontier evidence for another, and the flag belongs to the use rather than to the source.