Separate the generation payment from the export payment before comparing anything. You cannot receive FIT export and SEG payments for the same electricity. Ask your FIT licensee to confirm which payment would change and the process involved. Then compare actual metered exports and tariff terms; a higher advertised export rate is not enough to judge an older system’s overall income.
Join the discussion: Are your current export payments deemed or metered, and how much electricity do you actually export?
Suggested next step: Obtain a written comparison from your FIT licensee before changing export arrangements.