13 CFR § 120.931 - 504 Lending limits.
504 loan amounts shall be limited to:
(a) An outstanding balance of $5,000,000 for each Borrower and its affiliates if the loan proceeds will not be directed towards a Project in paragraph (c) of this section,
(b) An outstanding balance of $5,000,000 for each Borrower and its affiliates if one or more of the public policy goals enumerated in § 120.862(b) applies to the Project; and
(c) $5,500,000 for each Project for:
(1) Small Manufacturers (NAICS Codes 31–33) with all production facilities located in the United States;
(2) Reduction of the Borrower's, or if the Borrower is an Eligible Passive Company, the Operating Company's energy consumption by at least 10%; or
(3) Plant, equipment and process upgrades of renewable energy sources such as the small-scale production of energy for individual buildings' or communities' consumption, commonly known as micropower, or renewable fuel producers including biodiesel and ethanol producers.