“Commenced commercial operation” means to have begun to produce steam, gas, or other heated medium used to generate electricity for sale or use, including test generation.

Source. #9283, INTERIM, eff 10-1-08, EXPIRED: 3-30-09 New. #9444, eff 4-3-09; ss by #10468, eff 1-1-14 (from Env-A 4602.30); ss by #12967, eff 1-1-20 (from Env-A 4602.32)