Generally revise laws relating to wind generation facilities
Summary
SB 283 would revise Montana law governing wind generation facilities by adding new state-level siting and lighting standards for wind turbine towers. The bill defines key terms such as “wind generation facility,” “wind turbine tower,” “turbine rotor hub,” and “aircraft detecting lighting system,” and applies its requirements to facilities with at least 25 megawatts of nameplate capacity.
Beginning January 1, 2026, the bill would prohibit newly constructed or installed wind turbine towers from exceeding 350 feet in height, measured from natural ground level to the middle of the turbine rotor hub. It would also require wind turbines and their components not to be excessively lit beyond Federal Aviation Administration minimum requirements, and would mandate FAA-approved aircraft detection lighting systems on wind generation facilities with towers over 200 feet tall. Existing towers installed before January 1, 2026, would be exempt from the height limit.
Impact
The bill would add new restrictions to Title 75, chapter 26 of the Montana Code Annotated, affecting wind energy developers, project owners, and operators of utility-scale wind facilities. It would create a delayed effective date of January 1, 2026, and would regulate both the physical height of future towers and the lighting technology used to mark them for aviation safety. Existing wind turbine towers would not be retroactively subject to the height cap, but future projects would need to be designed to comply with the new limits and lighting requirements.
Sentiment
The available voting history suggests the bill had meaningful support in the Senate Energy, Technology & Federal Relations Committee, where a motion to table it passed 10-3. That result indicates the bill was not broadly embraced by the committee and likely faced substantial opposition, even though a majority favored setting it aside. The bill ultimately died in process, which is consistent with a contentious measure that did not advance to final enactment.
Contention
The main points of contention appear to be the bill’s impact on wind energy development and whether the state should impose stricter height and lighting rules beyond federal aviation requirements. Supporters likely viewed the measure as a way to address local concerns about visual impacts, lighting, and the scale of wind projects, while opponents likely saw it as a barrier to renewable energy investment and project feasibility. The 10-3 committee vote to table the bill suggests the disagreement centered on balancing aviation safety, community impacts, and the growth of utility-scale wind generation.