The IRS and the Treasury Department issued proposed regulations under Section 48 on November 22, 2023 (Proposed Regulations), providing further guidance in determining whether property is energy property and eligible for the Section 48 credit (ITC). As part of this further guidance, the Proposed Regulations introduce a new framework for the definition of energy property, provide welcome clarification regarding the eligibility of energy property for multiple credits, and provide guidance on the Section 48(a)(10)(C) recapture rules applicable to failures to satisfy the prevailing wage and apprenticeship requirements (PWA requirements). Taxpayers must be aware of these energy property requirements and additional ITC eligibility guidance to ensure future eligibility for the ITC. The Proposed Regulations would amend Treasury Regulation Section 1.48-9, withdraw and replace Proposed Treasury Regulation 1.48-13 as it was proposed in REG-100908-23 (PWA Proposed Regulations), and introduce Proposed Regulation Section 1.48-14. The Proposed Regulations follow the passage of the Inflation Reduction Act of 2022 (IRA) and the publication of Notice 2022-49, 2022-43 I.R.B. 321, which requested comments on issues arising under Section 48.