Tax-News.com: IRS Issues Guidance For Energy Tax Credit Claimants

The US Internal Revenue Service, in its Notice 2017-04, has updated and clarified
the guidance provided in its prior notices regarding the extension, at the end
of last year, of the dates by which facilities must begin construction to claim
the renewable electricity production tax credit and investment tax credit.
Source: IRS Tax News – Tax-News.com: IRS Issues Guidance For Energy Tax Credit Claimants