FPL Interconnection: Find Power, Navigate the Queue, Secure Your Site
FPL runs its own transmission system and studies generators in one annual cluster, with a 45-day window opening every January 15. Explore FPL's interconnection process with our interactive step-by-step guide, then use LandGate’s capacity and parcel data to find the sites that can actually connect.
FPL Interconnection at a glance
Quick facts | FPL |
|---|---|
Who runs it | FPL is its own transmission provider and balancing authority in Florida, not part of an ISO or RTO. FERC approves its transmission tariff, and the Florida PSC approves its retail large-load tariffs. |
Governing rules | FPL’s Open Access Transmission Tariff for generators, and its Large Load Contract Service (LLCS) tariffs for large loads |
Generator study process | One annual cluster, filed through FPL’s GISR portal. A 60-day engagement window is followed by a 150-day Cluster Study, a restudy if needed, and a facilities study of 90 or 180 days. |
Next window | Opens January 15, 2027, and runs 45 days. The 2026 Cluster Study report, covering 21 requests, was issued September 29, 2026. |
Generator timeline | Roughly 13 to 22 months from window close to a signed interconnection agreement, depending on whether a restudy is needed and which facilities study option is chosen |
Generator costs | A $5,000 non-refundable application fee and a study deposit of $150,000 to $250,000 for projects of 80 MW or more, plus a readiness deposit of twice the study deposit. The readiness deposit rises to 5% and then 10% of network upgrade costs, and to 20% at the interconnection agreement. |
Withdrawal penalties | None before the Cluster Study starts. After that, at least the study deposit, rising to 5% of upgrade costs during a restudy and 10% during the facilities study. |
Large load threshold | 50 MW or more of new load at one location, with a load factor of 85% or higher |
How large loads connect | As FPL retail customers, working with FPL directly, with no FERC queue for load. The process starts with a non-disclosure agreement and a system study of 6 to 9 months. |
Large load rates | LLCS took effect January 1, 2026. FPL estimates an average total rate of $82 to $104 per MWh from 2028 at an 85% load factor, before taxes and fees. Customers build and own their own substation. |
Large load demand | Inquiries from more than 50 potential large-load customers, totaling about 21 GW |
Last updated | November 3, 2026 |
FPL Generator Interconnection Process
Generator interconnection,
step-by-step
FPL studies generators in one annual cluster, with a 45-day window that opens every January 15. Deposits rise at each decision point, from twice the study deposit at filing to 20% of network upgrade costs at the interconnection agreement. The process takes roughly 13 to 22 months from window close to a signed agreement.
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Check the heatmap and queue. FPL posts a generator interconnection heatmap and its queue on its OASIS site, showing where the grid has room. Requests go to FPL directly.
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Apply during the January window. Submit through FPL’s GISR portal with proof of at least 90% site control, a $5,000 fee, a study deposit and a readiness deposit of twice the study deposit.
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Customer engagement window. Over 60 days, FPL holds a scoping meeting and posts the cluster’s requests. Requests with unfixed deficiencies are withdrawn.
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Cluster Study. FPL studies the whole cluster over 150 days and identifies needed network upgrades. To continue, developers raise their readiness deposit to 5% of upgrade costs.
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Restudy, if needed. If withdrawals change the results, FPL restudies the cluster over another 150 days.
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Facilities study. Developers sign a facilities study agreement within 30 days, show 100% site control and raise their deposit to 10% of upgrade costs. FPL then designs the facilities over 90 or 180 days.
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Sign the interconnection agreement. Developers post a deposit totaling 20% of upgrade costs and sign the agreement, then construction begins.
FPL Large Load Interconnection Process
Large Load interconnection,
step-by-step
Large loads in FPL’s territory are FPL retail customers, so they work with FPL directly, with no FERC queue for load. FPL’s Large Load Contract Service tariffs apply to new loads of 50 MW or more at one location, with a load factor of 85% or higher. The tariffs took effect January 1, 2026.
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Contact FPL and sign an NDA. The process starts with a non-disclosure agreement, after which FPL shares its large-load process guide. Loads below the thresholds take FPL’s standard commercial rates.
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Pick a site and rate. The customer chooses a site to study and a large-load rate. One option, LLCS-1, covers up to 3 GW of new load in three zones near FPL transmission, chosen for speed to market.
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System study. FPL estimates the time and cost to connect the load, based on the customer’s peak demand and ramp schedule. This takes 6 to 9 months.
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Accept the results. The customer has 6 months to accept the study results and move to agreements.
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Sign the construction agreement. The customer signs FPL’s construction agreement and pays for the facilities FPL builds.
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Sign the service agreement and post security. The customer signs the service agreement and posts performance security within 5 days.
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Build and energize. The customer builds, owns and operates its own high-voltage substation, and FPL energizes the load once both sides are complete.
What's changed recently in FPL interconnection
Last updated November 2026
FPL launched new tariffs for large loads in 2026 and is running its generator cluster on an annual cycle. Florida also passed a law requiring large-load tariffs to cover these customers’ own costs. If your project is in FPL’s territory, check which of these changes apply before the next window or contract.
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January 1, 2026: FPL’s Large Load Contract Service tariffs took effect for new loads of 50 MW or more at one location with a load factor of 85% or higher, approved in the Florida PSC’s January 2026 rate settlement order.
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January 15, 2026: FPL’s 2026 cluster window opened for 45 days.
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September 29, 2026: FPL issued its 2026 Cluster Study report, covering 21 requests. FPL has also posted a restudy report for its 2025 cluster.
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October 1, 2026: FPL filed with the PSC that its large-load tariffs already comply with Florida’s SB 484, which requires large-load tariffs to make these customers pay their own cost of service.
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Coming up: the 2027 cluster window, opening January 15, 2027, and the PSC’s review of FPL’s SB 484 filing.
How LandGate Helps with FPL Interconnection
Find sites in FPL for large loads and data centers, then analyze their feasibility using LandGate's nationwide data
Get your projects on the grid faster with reliable transmission data.
Pick a site before the January window
FPL accepts requests only from January 15 for 45 days, and applications need at least 90% site control. Search parcels by criteria such as distance to a substation and available offtake capacity, and see available transfer capacity at transmission-level injection points to find points of interconnection worth applying for.
Know your upgrade exposure
FPL’s deposits climb to 5%, 10% and then 20% of network upgrade costs as a project advances. LandGate’s automated offtake capacity studies show substation details, capacity results, limiting elements such as transmission lines and transformers, and queue information, so you can spot upgrade risks before committing capital.
Choose the right site for a large load
FPL studies one preferred site at a time and large load customers build their own high-voltage substation, so being close to the right transmission matters. LandGate's Data Center Due Diligence Reports identifies the nearest transmission and distribution lines and ranks the closest substations by available capacity, so you can bring FPL a site worth the 6-9 month study.
Lock down the best sites
FPL requires at least 90% site control at application and 100% at the facilities study. LandGate pairs its grid data with proprietary landowner leads, nationwide ownership data and contact info, and a map-based CRM to help you find, secure, and track the right parcels, including off-market properties with the ideal infrastructure profile.
