When reporting income from Solar Renewable Energy Credits (SRECs) to the IRS, you should use the gross value of the income received from the sale of SRECs. This means you report the total amount before deducting any brokerage fees or other expenses.
Even you don't receive a 1099-MISC from the brokers, you can still report this income under "Other Reportable Income" on your tax return:
Steps to Report SREC Income in TurboTax without a 1099-MISC
Open your return in TurboTax.
Click on Income
Scroll to bottom Income screen and click Add Income
Scroll down to the Less Common Income next to Miscellaneous Income, 1099-A, 1099-C and select form
Go Back to Income screen and click on pencil next to Miscellaneous Income, 1099-A, 1099-C and
On the Miscellaneous Income screen, scroll down and select Other reportable income.
When asked, "Any Other Taxable Income?", click Yes.
Enter a description such as "SREC Income" and the total amount received from the sale of SRECs.