- Energy Conservation Products, Inc.
 - Sarasota - Providing manufacturer-direct supply sources and EPA Energy Star design services for commercial and residential clients. - Solar Source
- Clearwater - Distributorship for the Tampa Bay area.
- Electricity > Utilities
- Lakeland Electric
- Lakeland - Features services, home safety and energy management tips, and community information.
- Petroleum
- Phenix Group, The
- Palm Harbor - Diversified company with interest in oil and gas, telecommunications, energy, transportation, mineral exploration/development, timber, and tourism within Latin America.
- Petroleum > Natural Gas > Utilities
- Peoples Gas
- Tampa - Provider of natural gas and propane distribution.
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