A109 All Series
Flight Crew Multiengine; Flight Crew Commercial; Flight Crew Instrument
Flight Crew Last 90 Days 30; Flight Crew Total 4470; Flight Crew Type 600
Situational Awareness
No Specific Anomaly Occurred All Types
General None Reported / Taken
Environment - Non Weather Related
The new wind turbine farms in the vicinity of Rumford and Berlin NH are not able to be seen with Night Vision Goggles.  Apparently these beacons are of a spectrum not visible with the night vision devices and could cause problems for Military or Scene Call ops for HEMS aircraft.  They are only able to be seen with the naked eye.
The reporter states that red tower and obstacle beacons are normally very bright in his night vision goggles but for some reason; unknown to him; the hazard beacons on these new wind turbines are completely invisible.
Helicopter pilot reports that the hazard beacons on the new wind turbine farms in the vicinity of Rumford and Berlin; NH are not visible with Night Vision Goggles.