How will they affect the night sky?

The FAA requires wind turbines to be lit at night with red L-864 medium intensity aviation lighting. These have a brightness level of 2,000 candela (cd). Lighting technology has come a long way for wind turbines and projects are now starting to come online that will utilize Aircraft Detection Lighting Systems, or ADLS, to minimize the visual impact of required safety lighting. ADLS systems can detect when low flying aircraft are nearby so that the lights only illuminate when aircraft are in the area. This can significantly reduce nighttime lighting if the system is approved by the FAA. We look forward to exploring whether this wind project can utilize ADLS, and we will ensure the community is part of that discussion.