Distribution Transformer Efficiency and Supply Chain Reliability Act of 2024

S 3627, the Distribution Transformer Efficiency and Supply Chain Reliability Act of 2024, prevents federal rules from requiring distribution transformers to meet efficiency levels stricter than "trial standard level 2" for liquid-immersed and dry-type transformers. It directly affects manufacturers of these transformers by limiting future efficiency standards. The key provision delays any finalized rule for "trial standard level 1 or 2" efficiency from taking effect for 10 years after finalization. This bill aims to provide stability for the supply chain by slowing the implementation of stricter efficiency requirements.