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Thermal Energy Storage

Our Thermal Energy Storage (TES) rebate program is designed to help commercial and industrial customers reduce cooling costs by shifting designated load from on-peak to non-peak hours. Both new and existing construction projects qualify for this rebate.

How the program works

To qualify for the rebate, customers must shift all or part of their designated HVAC load from on-peak during the summer hours between 3 p.m. to 7 p.m. to non-peak hours, Monday through Friday. The TES system must achieve at least 100-kilowatt (kW) of demand reduction during Tampa Electric's designated peak summer hours.

Tampa Electric will require access to your facility to install an interval data recording meter, or sub meter on individual equipment for a period of twelve months or longer. Our metering devices are used to record and monitor on- and off-peak energy use.

Equipment must be new and meet or exceed the Florida Energy Efficiency Building Code. Refurbished and preexisting equipment does not qualify. Customers seeking eligibility for this program cannot be participating in any Tampa Electric peak shaving programs such as Standby Generator, Demand Response and Load Management.

Rebate amount

Earn a rebate of $200 per kW when you install an off-peak air conditioning system that shifts (or transfers) load during Tampa Electric's peak hour of 5 p.m., Monday through Friday.

Qualifying systems will receive 50 percent of the eligible rebate upon successful installation and completion of a field verification. The remaining portion of the rebate will be paid once the TES system has demonstrated at least 90 days of successful summer operation. The total rebate paid will be based upon eligibility and the performance of the TES system.

Pre-approval is required

An approved proposal must be submitted to Tampa Electric prior to installing a TES at your facility. The proposal must contain a professionally sealed engineering analysis with demand and energy calculations, and cooling and heating load calculations.

Acquiring your rebate

Before work begins, please submit the following information, along with the proposal to Tampa Electric using the Thermal Energy Storage application Secure Form Icon. After you submit the application, you will receive an enrollment number that you can use to access your application. Be sure to write down and save the enrollment number.

  • Tampa Electric customer account number
  • Contractor license number
  • Contractor license number expiration date
  • Project contract date
  • Model numbers for equipment
  • Manufacturer's data sheet for each equipment model number
  • Incremental costs for equipment required to shift load (e.g., piping, tanks, motors and labor)

The application will prompt you to upload the following information:

  • Specification sheets
  • Pre-retrofit and post-retrofit energy and demand analysis signed by a professional engineer.
  • Cooling and heating load analysis
  • Projected work schedule with dates for the installation of the TES.
  • Itemized inventory of needed equipment specifications showing rating and AHRI certification, projected costs and quantities of piping, tanks, motors, and installation labor.
  • Download and submit this Thermal Energy Storage Demand and Energy Calculation Form

To access an existing application Secure Form Icon, simply enter the enrollment/confirmation number you received when you initially submitted your application. This will allow you to make changes and upload any required files.

If you have questions, please email comconreq@tecoenergy.com Email Icon or call 813-275-3909 on weekdays from 8 a.m. to 4 p.m.