TECO Tariffs: Data Centers Face New Energy Costs in Tampa Bay

Tampa Electric has filed a proposal with the Florida Public Service Commission that would shift the cost of new power infrastructure to large energy users, such as data centers, instead of existing customers. The utility submitted the filing Sept. 30 to protect current ratepayers as the region anticipates increased demand from artificial intelligence and cloud computing facilities.

Under the proposal, any new customer requiring a peak demand of 50 megawatts or more would be classified as a "large load customer." This threshold is equivalent to the electricity needed for tens of thousands of homes.

"Tampa Electric’s responsibility is very clear. We must protect our existing customers while we’re planning responsibly for the future," said Tampa Electric spokesperson Cherie Jacobs. The new tariffs, mandated by a recent Florida law, would require large-load customers to pay for new power generation, transmission upgrades, energy storage projects and other grid-related expenses needed to support their operations.

The utility stated the tariffs are designed to "reasonably ensure that each large load customer bears its own full cost of service and that such cost is not shifted to the company’s general body of ratepayers." Companies designated as large load customers would commit to contracts lasting at least 20 years, with potential penalties for early termination. TECO could also require security deposits or letters of credit up to $2 million per megawatt of contracted demand.

The initial customer class for these tariffs is capped at a combined total of 1 gigawatt of large-load demand. Once this limit is reached, subsequent projects would fall into a second class with project-specific cost calculations. TECO anticipates investments in energy storage and new generating capacity, including modernization plans at the Big Bend Power Station, to accommodate future demand.

The proposal also includes provisions to block service under these tariffs to certain foreign entities controlled by governments identified as foreign countries of concern.

While no major data center proposals are under review in Hillsborough County, local officials are discussing potential regulations for future data center developments. County commissioners are considering restrictions on water usage for cooling and possible moratoriums in unincorporated areas.

The Florida Public Service Commission must approve TECO's proposal before it can take effect. The utility expects the process to take several months, potentially extending into early next year.