"The OBBB accelerates the phase-out of the solar tax credits. For commercial solar projects, the 45X credit will see a reduction starting in 2029, with a complete elimination by 2031. This means that projects must begin construction soon to qualify for the full benefits"
From Campanella LinkedIn page
If it will be online in 2026, it must have been started in 2025 , which means it will qualify for the full benefit, if I am reading the above correctly. .