: All payments for transferred credits must be made in cash .

Briefing: IRC Section 6418 - Transfer of Clean Energy Tax Credits

: Developers (transferors) can convert credits into immediate cash if they lack the tax liability to use them internally Transferable Energy Tax Credits Under IRC § 6418 .

: If a transferred credit is found to be excessive, the buyer (transferee) is generally liable for a penalty equal to 20% of the excessive amount unless "reasonable cause" is shown.

under Section 45V IRC Section 6418 FAQ: Transferring Energy Tax Credits. Compliance and Deadlines

: The transfer election must be made by the due date of the tax return (including extensions) for the year the credit was determined.

under Section 45 IRC Section 6418 FAQ: Transferring Energy Tax Credits .