SRECs - report net or gross income?

I understand from reading previous posts (posted several years ago) that the income from SRECs is considered taxable income by the IRS, and should be shown as 1099-MISC.  BUT, what value is to be used?  The sale of SRECs is typically through a broker (SRECTrade, SolSys, etc.) and I don't receive a 1099-MISC from them.  Is the gross value to be used on my tax forms or the net value (total value minus the brokerage fees)?