REEIMS registration requirement now mandatory for specified solar and wind imports; advance, port specific filings and end use declarations required. Imports of specified HS codes used exclusively in solar projects or for wind electricity generation must undergo mandatory REEIMS registration prior to import for air, sea and land shipments; registrations require advance submission (two days for air; five days for sea and land), are port specific, valid for a limited period, carry no fee, permit multiple consignments under one registration, and require an importer declaration of intended end use.