The gameplay.constants file has a lot of changeable values.
Take a look and you will find:
incomeSpeedData-Slow
incomeRateGameSpeedScalar 0.0
incomeSpeedData-Normal
incomeRateGameSpeedScalar 0.15
incomeSpeedData-Fast
incomeRateGameSpeedScalar 0.30
increasing these numbers will result in higher resources.
This is a text file in the gameinfo folder of SoaSE's main program folder.
Happy New Year!