Indiana Code Title 13. Environment § 13-17-8-6

(1) Except as provided in subdivision (2), the initial fee structure may not include a fee for a source that exceeds one hundred fifty thousand dollars ($150,000) in each year.

(2) For a source that:

the initial fee structure may not include a fee that exceeds two hundred thousand dollars ($200,000) in each year.

(3) Except as provided in subdivision (4), during the period:

the fee structure may not be attributable to the amount or type of emissions from a steam electric generating unit that is an affected unit under 42 U.S.C. 7651c.

(4) During the period described in subdivision (3), the total annual fee for affected units at a source that contains at least one (1) affected unit described in subdivision (3) may not exceed fifty thousand dollars ($50,000).  Fees paid for the source under the fee structure established in section 3 of this chapter shall be credited toward the amount of the fee that the source is required to pay under this subdivision.