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Large load tariffs in the Southeast: what they mean for a 500 kW business

An August 2026 catalog from the Edison Electric Institute lists the large load tariffs now in force across the Southeast: FPL's 50 MW contract schedules effective January 1, 2026, Georgia Power's minimum billing and longer terms for 100 MW customers, and Duke Energy Florida's pending filing. They are written for data centers. Here is what they change for everyone else.
4 min read
High-voltage transmission lines crossing pine flatwoods toward a new industrial campus under construction in Georgia

Large load tariffs in the Southeast are now a category of their own, and a catalog published by the Edison Electric Institute in August 2026 sets them out utility by utility. The document, Large Load Projects and Tariffs, updated August 28, lists the special rate schedules that state commissions have approved or are reviewing for data centers and large manufacturers, with the stated purpose of ensuring that "large load customers pay their fair share." For a business drawing 500 kW rather than 500 MW, the schedules do not apply. What they decide is who pays for the plants and lines that the new load requires, and that reaches every bill in the territory.

The catalog counts more than $1.03 trillion of publicly announced projects and more than 70 gigawatts of connected load across the association's member utilities, covering projects of roughly 20 MW and larger. Three Southeast entries are the ones that matter for a Georgia or Florida business.

What do the Florida and Georgia large load tariffs require?

In Florida, docket 20250011 approved two new Florida Power & Light schedules, Large Load Contract Service 1 and Large Load Contract Service 2, for future customers with projected new or incremental load of 50 MW or more and a load factor of 85 percent or more. The catalog says the tariffs took effect on January 1, 2026 and "contain minimum terms, take or pay requirements, exit fees, and collateral requirements." In docket 20260064, Duke Energy Florida has filed an updated large load proposal in response to Senate Bill 484.

In Georgia, docket 44280 approved Georgia Power's amendment of its rules to provide minimum billing requirements and longer contract terms for customers with expected peak demand of 100 MW or more. The amended rules specify that contracts for transmission or distribution line extensions and service connections run as long as the rate schedule or longer, so that the utility recovers its cost and a large customer that terminates pays whatever the utility incurred in serving it. A separate docket, 44847, approved the Customer Identified Resource program, under which large customers pay for clean energy resources in exchange for renewable energy certificates and credit for the energy value.

The load behind those rules is real. The catalog records that Georgia Power has signed 29 customer commitments with new data center and industrial projects and holds regulatory approval to add 10 gigawatts of generation capacity over the next six years "while supporting rate stability for existing customers." Its list includes a 3.2 gigawatt data center project outside Savannah and the $12.6 billion vehicle plant near the same city. In North Carolina it lists a $10 billion data center campus in Richmond County, with the note that Duke Energy "expects each 1,000 MW data center to save existing customers almost $1 billion over the life of a 15-year contract."

What this means for a business in Georgia or Florida

Take the tariffs at their word and they are protective. Minimum terms, take-or-pay clauses and exit fees exist so that a 50 MW customer cannot commission a substation and a share of a power plant and then leave the cost with everyone else. A well-drafted large load tariff is good news for the general service customer, and the Georgia Power language about rate stability for existing customers is the intent.

The mechanics still run through the rate base. Ten gigawatts of new generation is recovered over decades in rate cases, and the share that reaches a mid-sized business depends on how each docket allocates it. We reported the terms of the Savannah data center contract in what the Georgia Power and OpenAI deal means for business bills, and the same logic applied to a state-owned utility in Santee Cooper's large load rate. In every case the ordinary business is a bystander to the docket and a participant in the outcome.

There is one part of the outcome a business controls. Demand charges and energy charges are set by what the meter records, and a site that generates part of its own power and shifts consumption off the peak window lowers both, whatever the commission decides about the next plant. That lever does not require a docket number, a 15-year contract or collateral. It requires twelve months of bills and an engineer.

How we approach it

Our commercial solar installation in Georgia work runs on that logic, and it includes the utility itself as a customer: we built 1.2 MW of ground-mounted solar across four Georgia Power facilities. In Florida the same design questions apply under a different set of schedules, covered on our commercial solar installation in Florida page.

Where a tariff has a demand charge worth attacking, we add commercial battery storage sized to the peak window rather than to the whole load, and we explain the arithmetic in when commercial battery storage pays off. The array, the storage and the interconnection are delivered under one commercial solar EPC contract, which keeps the schedule in our hands rather than the utility's queue.

If your business is in Georgia or Florida and your bill has grown faster than your consumption, the large load dockets are part of the reason and none of the remedy. Run our calculator for a first estimate, then send us twelve months of utility bills and we will show you how much of the bill a system on your own site would take off the table.

large load tariffs Southeast

Frequently asked questions

What is a large load tariff?

A rate schedule written for a single very large new customer, typically a data center or a manufacturing campus, that sets conditions an ordinary business never sees: a minimum contract term, take-or-pay obligations for a share of the contracted capacity, exit fees if the customer leaves early and collateral to back the commitment. The Edison Electric Institute's August 2026 catalog describes them as designed to ensure large load customers pay their fair share of the plants and lines built to serve them.

Which Southeast utilities have large load tariffs in force?

According to the catalog, Florida Power & Light was approved in docket 20250011 for two schedules, Large Load Contract Service 1 and 2, for new or incremental load of 50 MW or more at an 85 percent load factor, effective January 1, 2026. Georgia Power was approved in docket 44280 to apply minimum billing and longer contract terms to customers with expected peak demand of 100 MW or more. Duke Energy Florida has filed an updated proposal in docket 20260064 under Senate Bill 484.

Does a large load tariff apply to my business?

Not unless your site draws 50 megawatts or more, which is a hyperscale data center or a very large plant. A warehouse, a hotel, a poultry complex or a mid-sized factory in Georgia or Florida stays on its general service or large power schedule. The tariffs matter to you indirectly: they decide how much of the cost of new generation and transmission is carried by the large customer and how much reaches the rest of the rate base.

Why are utilities in Georgia and Florida building so much new capacity?

Because the load is arriving. The catalog notes that Georgia Power has signed 29 customer commitments with new data center and industrial projects and has regulatory approval to add 10 gigawatts of generation over the next six years, and it lists a 3.2 gigawatt data center project outside Savannah among them. Nationally the catalog counts more than $1.03 trillion of announced projects and more than 70 gigawatts of connected load among its members.

What can a mid-sized business do about rising fixed costs on its utility bill?

Reduce the part of the bill it controls. Demand charges and energy charges both fall when a site generates part of its own power and shifts consumption off the peak window, and neither depends on how a commission allocates the cost of a new plant. A solar array sized to the load, with storage where the tariff rewards it, is the one instrument a business can apply on its own schedule while the large load dockets run their course.

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