Florida has no independent grid operator. Unlike Texas, where ERCOT manages its own interconnection process, or the Midwest, where MISO runs a regional queue open to any developer, Florida's solar interconnection runs through the same utilities that compete with independent developers to build solar projects.
That creates a dynamic you won't find in most active solar markets. FPL — a subsidiary of NextEra Energy, the largest renewable energy company in the world — built most of the utility-scale solar in its service territory itself. Its interconnection queue handles requests from independent developers, but FPL's own projects move through an internal development pipeline that independent developers cannot access. A site that makes financial sense for a third-party developer may never get a lease offer simply because FPL has its own plans for the same load pocket.
How interconnection works without an ISO
Florida utilities are FERC-regulated but not members of any regional transmission organization. PJM ends at Georgia's border. MISO doesn't extend this far south. Florida's interconnection processes run state-by-state across three major service territories: FPL in the southeast and much of the interior, Duke Energy Florida in the north-central part of the state, and Tampa Electric (TECO) in the Tampa Bay corridor.
Each utility manages its own interconnection queue under FERC Order 2023 requirements — which means the cluster study processes and timelines now apply, but the queue itself is smaller and less transparent than what developers find in PJM or MISO. FPL publishes its queue on its OASIS system, as required under FERC rules, but the volume and depth of publicly available queue data is narrower than what ISO dashboards provide. Developers working in Florida spend more time in direct utility conversations and less time interpreting ISO queue statistics.
The practical result: interconnection timelines in Florida are less predictable than in ISO markets. A project that enters FPL's queue competes with the utility's own internal pipeline, and there is no market operator providing an independent read on congestion, available capacity, or expected study timelines.
Duke Energy Florida's territory is smaller and historically less saturated with interconnection requests, which is one reason north-central Florida counties have attracted more independent developer activity.
The flood and wetland filter runs first
In most states, grid proximity is the dominant variable in site selection. In Florida, large portions of the state fail the constraint screen before interconnection distance becomes relevant.
Southern Florida sits at or near sea level across most of its footprint. The Lake Okeechobee watershed, the Everglades drainage basin, and the coastal lowlands that extend north from Miami through the Treasure Coast carry significant FEMA Zone AE coverage — the 100-year floodplain designation that most project lenders treat as disqualifying for conventional solar financing. The National Wetlands Inventory flags extensive palustrine and estuarine wetlands across the same areas, and hydric soils are widespread enough in the southern interior that a clean NWI result alone doesn't rule out a delineation requirement.
FEMA flood zone AE is the constraint that ends more Florida site evaluations than anything else. A parcel in Collier, Lee, Charlotte, or Sarasota counties that clears the utility and acreage filters will often fail the flood screen. The same parcel evaluated in Ohio or Georgia would proceed to interconnection study. In Florida, it doesn't make it past the first GIS layer.
The filter narrows dramatically as you move inland and north. Highlands County, at an average elevation of around 100 feet above sea level, has a materially different flood and wetland profile than the coastal counties. So does the interior of Marion and Alachua counties in north-central Florida. Developers targeting Florida for independent projects concentrate there for this reason.
Where viable solar land concentrates
The counties attracting the most independent developer activity in 2026 sit in a band across the central and north-central interior — away from the coast, above the Lake Okeechobee basin, and in areas where the constraint profile resembles the agricultural Midwest more than coastal Florida.
| County | Utility territory | Constraint profile |
|---|---|---|
| Highlands | FPL | Higher elevation, active pipeline, manageable flood and wetland risk |
| DeSoto | FPL | Agricultural interior, lower wetland density, flat terrain |
| Marion | Duke Florida | Central-north interior, suitably flat, less saturated queue |
| Polk | FPL / Duke boundary | Mixed; eastern areas carry flood risk; phosphate brownfields create opportunities |
| Alachua | Duke Florida | North-central, active development, university-area load |
| Okeechobee | FPL | Interior agricultural, requires careful flood zone screening |
FPL has built across Highlands, DeSoto, and Glades counties over the past decade, using a combination of owned land and long-term lease agreements. The Babcock Ranch Solar Energy Center in Charlotte County — tied to the Babcock Ranch planned community — is one of the more visible examples of FPL's land lease approach in the south-central interior. In counties where FPL has already committed the available substation capacity to its own projects, independent developers face a longer path. In Duke territory, where FPL isn't the queue manager, the dynamics are different.
What developers pay in Florida
Lease rates in Florida run lower than comparable solar markets with equivalent irradiance in the Southeast. The utility-dominated structure is the main reason.
| Region | Range ($/acre/year) | Primary driver |
|---|---|---|
| FPL south-central interior (Highlands, DeSoto) | $500–$900 | FPL competition for same sites, utility-controlled queue |
| Duke Energy Florida territory (Marion, Alachua) | $600–$1,100 | Less FPL competition, somewhat more IPP activity |
| Coastal counties (where viable) | $400–$750 | Flood and wetland risk reflected in offer |
The spread within each range reflects substation proximity and acreage. A 200-acre parcel two miles from a substation in Marion County will receive a different offer than one six miles away with the same flood zone profile. In Florida, that gap can run $200 to $300 per acre per year — meaningful over a 20-year lease on a large parcel.
FPL's development model also means some Florida landowners receive acquisition offers rather than lease proposals. NextEra's Florida subsidiary has historically purchased land for its larger facilities rather than leasing it, particularly when the acreage and location suit a multi-hundred-MW project. A lease offer in Florida is more typical for medium-scale projects; a purchase inquiry signals the developer is planning something larger.
What to evaluate before making an offer
Independent developers screening Florida parcels run through a specific sequence because the filters that eliminate most sites hit early.
Flood zone and wetlands first — before checking substation distance or acreage, look up the parcel in the FEMA Flood Map Service Center and the NWI Wetlands Mapper. In Florida, this filter eliminates a larger share of otherwise attractive parcels than in almost any other high-solar-activity state. Knowing how wetlands delineation works in solar permitting is relevant here: a clean NWI result doesn't mean the parcel is delineation-free, especially in areas with hydric soil coverage.
Utility territory — identify which utility serves the parcel. FPL and Duke Energy Florida have meaningfully different development cultures and queue dynamics. A parcel in Duke territory may face less competition from the utility's own internal pipeline.
Acreage and contiguity — FPL typically targets 100+ acres for its own projects. Independent utility-scale projects in Florida generally require 40 to 80 contiguous usable acres at minimum. Subtract setbacks, any wetland areas, and existing road or easement corridors from the gross acreage to get the number that matters.
County SUP requirements — Florida counties set their own solar permitting rules. Some, including Suwannee and Taylor counties in the north, have adopted restrictions or moratoriums; others remain open. Check the county comprehensive plan and recent planning commission meeting minutes before committing to a site.
Sunnyplans shows substation and transformer distances at the parcel level for Florida listings, alongside a SunnyScore that weights grid proximity and solar potential. If you want to see which parcels in Florida have already cleared the NWI and protected area filters, browse solar land listings in Florida by county.