Appropriations from the Public Utility Fund shall be made only to the Illinois Commerce Commission for ordinary and contingent expenses of the Commission in the administration of the Public Utilities Act, in the administration of the Electric Supplier Act, and in the administration of the Illinois Gas Pipeline Safety Act; to the Department of Natural Resources for the purpose of conducting studies concerning environmental pollution problems caused or contributed to by public utilities and the means for eliminating or abating those problems, in accordance with the functions of the Department as specified in the Environmental Protection Act; and to the Department of Commerce and Economic Opportunity for administration of energy programs, including those specified in the Comprehensive Solar Energy Act of 1977 and the Illinois Coal and Energy Development Bond Act. No money shall be transferred from the Public Utility Fund to any other fund.