FPL interconnection requirements
Sample preview — compiled from public sources 2026-08-19
Who this applies to
This page covers customer-owned renewable generation — overwhelmingly rooftop solar, with or without storage — interconnecting for net metering with Florida Power & Light under Florida PSC Rule 25-6.065, the statewide rule the Commission applies to its investor-owned utilities. FPL's territory includes the former Gulf Power service area in Northwest Florida.
- Tier 1 — 10 kW AC or less. Most residential solar. Streamlined path: no application fee, no insurance requirement.
- Tier 2 — greater than 10 kW up to 100 kW AC. Large residential and small commercial. Application fee, proof of insurance, one-line diagram.
- Tier 3 — greater than 100 kW up to 2 MW AC. Commercial. Higher fee, higher insurance, possible interconnection study.
Tier is set by gross power rating in AC terms; for inverter-based systems FPL calculates the AC rating as total installed DC nameplate capacity × 0.85. Systems above 2 MW, wholesale generators, and projects outside net metering are out of scope for this page.
Application pathway overview
Applications go through FPL's online net metering application, reached through the customer's FPL account; progress can be saved, status is tracked online, and the customer can grant their contractor access to enter the technical details. FPL's published sequence puts size pre-approval before installation — the system must be pre-approved, then installed and inspected by the authority having jurisdiction (AHJ), then the application is completed with the signed Interconnection Agreement for Customer-Owned Renewable Generation and supporting documents.
| Pathway | Size (AC rating) | Review |
|---|---|---|
| Tier 1 interconnection | 10 kW or less | Streamlined; agreement signature, permit upload, no fee or insurance |
| Tier 2 interconnection | >10 kW – 100 kW | Adds one-line diagram, inverter spec sheet, insurance proof, application fee |
| Tier 3 interconnection | >100 kW – 2 MW | Single-line diagram before installation; Fast Track screening review (10 business days); interconnection study possible |
Two sizing constraints from FPL's guidelines apply across tiers: the system must be estimated to produce less than 115% of the account's annual kWh consumption, and customer generation is limited to 90% of service capacity — exceeding it requires customer-funded facility upgrades. Systems of 50 kW or more must interconnect at 120/208V or 277/480V three-phase wye.
Required forms & documents
The structural contents of an FPL net metering packet. Tier drives which items apply; check every document against FPL's current tier pages and agreement revisions before filing.
- Online net metering application under the correct FPL account and premise, with system size pre-approved before installation
- Signed Interconnection Agreement for Customer-Owned Renewable Generation, in the tier-matching version (Tier 1 / Tier 2 / Tier 3 confirm current revision)
- Final or completed permit from the authority having jurisdiction (AHJ) showing the electrical/mechanical inspection signed off, description of work, system address, permit number, and building department name
- Electrical one-line diagram and inverter specification sheet (Tier 2); single-line diagram submitted before installation, including disconnect switch location for non-inverter systems (Tier 3)
- Utility-interactive inverter documentation — the inverter must automatically isolate from the grid on outage
- Proof of general liability insurance listing the property address — $1M for Tier 2, $2M for Tier 3
- Application fee payment for Tiers 2–3, against FPL's emailed invoice (mail, ACH, or wire)
- Bi-directional meter installation by FPL before the system operates — do not energize until FPL's permission-to-operate email
Fees
Rule 25-6.065 bars any application charge at Tier 1 beyond standard retail fees, and lets the utility charge Commission-approved, cost-based fees at Tiers 2 and 3, plus an interconnection study charge option at Tier 3. FPL invoices the fee by email during the application; the insurance requirements below are a Florida-specific companion to the fee tiers.
| Item | Published amount | Notes |
|---|---|---|
| Application fee — Tier 1 (≤10 kW AC) | None | Prohibited by Rule 25-6.065 beyond standard retail charges |
| Application fee — Tier 2 (>10–100 kW AC) | $400 verify current schedule | Per FPL's net metering tier pages; invoiced by email |
| Application fee — Tier 3 (>100 kW–2 MW AC) | $1,000 verify current schedule | An interconnection study charge may also apply per the rule |
| Liability insurance — Tier 2 / Tier 3 | $1M / $2M | Rule caps what an IOU may require at these amounts; certificate must list the property address |
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Typical timeline stages
- Start and pre-approval — open the online application and get the system size pre-approved before installation; the contractor can enter technical information with granted access.
- Installation and AHJ inspection — install the system and obtain the local jurisdiction's inspection sign-off and approved permit documentation.
- Fee and submission — pay the emailed fee invoice (Tiers 2–3), sign the Interconnection Agreement, and upload the required documents.
- Completeness and review — Rule 25-6.065 requires the utility to notify the applicant of completeness or deficiencies within 10 business days; FPL reviews and either approves or requests corrections.
- Agreement execution — within 30 calendar days for Tiers 1–2, and 90 days for Tier 3 where an interconnection study is needed, per the rule.
- Meter and permission to operate — FPL installs the bi-directional meter, completes any inspection it elects (within 30 calendar days of the customer's notice per the rule), and emails that the system can begin operating.
Common deficiency causes
Common ways FPL applications fall short of the published requirements above — each item is a requirement in FPL's and the Florida PSC's cited documents whose absence triggers a deficiency. Not drawn from SunDocket filing data.
- AC rating math errors — the DC nameplate × 0.85 calculation deciding the tier, so a miscalculation files the project under the wrong tier's agreement, fee, and insurance
- Permit documentation missing a required element: inspection sign-off, description of work, system address, permit number, or building department name
- Insurance certificate that does not list the property address of the generation system, or coverage below the tier amount
- System sized above the 115%-of-annual-consumption estimate or beyond 90% of service capacity without the associated upgrade arrangement
- One-line / single-line diagram missing for Tier 2–3, or a Tier 3 diagram submitted after installation instead of before
- Unsigned or tier-mismatched Interconnection Agreement, or a superseded agreement revision
- Operating the system before the bi-directional meter is installed and permission to operate is issued
- Missed correction windows after FPL requests changes, which stalls the application
FAQ
How long does FPL interconnection take?
FPL does not publish a single end-to-end number, but Florida's Rule 25-6.065 sets the clocks: the utility must tell you within 10 business days whether your application is complete, execute the interconnection agreement within 30 calendar days for Tiers 1–2 (90 days for Tier 3 where an interconnection study is needed), and complete any physical inspection it elects within 30 calendar days of your notice. The customer-side steps — system size pre-approval, installation, and the local jurisdiction's inspection sign-off — usually drive the overall calendar.
What is the FPL net metering application fee?
Tier 1 (10 kW AC or less) has no application fee — the rule bars charges beyond standard retail fees at that tier. FPL's published fees are $400 for Tier 2 (over 10 kW up to 100 kW AC) and $1,000 for Tier 3 (over 100 kW up to 2 MW AC), invoiced by email and payable by mail, ACH, or wire. Verify current schedule before filing; a Tier 3 interconnection study charge may also apply under the rule.
What are FPL's net metering tiers?
Three size-based tiers set by Florida PSC Rule 25-6.065, measured by gross power rating in AC terms: Tier 1 is 10 kW or less, Tier 2 is greater than 10 kW up to 100 kW, and Tier 3 is greater than 100 kW up to 2 MW. For inverter-based systems the AC rating is calculated as total DC nameplate capacity multiplied by 0.85, so a system's tier can differ from its DC size.
Does FPL require liability insurance for solar?
Not for Tier 1 — the rule prohibits requiring liability insurance for systems of 10 kW AC or less. Tier 2 applicants must show proof of general liability coverage of $1 million and Tier 3 applicants $2 million (the rule caps what an investor-owned utility may require at those amounts), and FPL requires the certificate to list the property address of the generation system.
Do I need FPL approval before installing my system?
FPL's published application process includes a pre-approval step: the system size must be pre-approved through the online net metering application before installation, and your contractor can enter the technical information if you grant them access. After installation you submit the local jurisdiction's approved inspection documentation, sign the interconnection agreement, and wait for FPL's approval and bi-directional meter before operating.
How big can my system be under FPL net metering?
The rule tops out at 2 MW AC (Tier 3 ceiling). FPL's guidelines add two sizing constraints: the system must be estimated to produce less than 115% of your annual kWh consumption, and customer generation is limited to 90% of your service capacity — exceeding that requires customer-funded facility upgrades. Systems of 50 kW or more must interconnect at 120/208V or 277/480V three-phase wye.
What happens to excess energy credits at the end of the year?
Under Rule 25-6.065, excess kWh credits carry forward month to month for up to 12 months. At the end of each calendar year, any remaining unused credits are paid out at the utility's as-available energy rate (the COG-1 tariff rate), and the customer keeps the associated renewable energy certificates.
Change log
- Page created from public sources.
Requirements drift. Get the changes.
When this page's change log gets a new entry, we'll email you that entry. Nothing else — see the privacy note.
Sources
- FPL — Net metering application process (accessed 2026-08-19)
- FPL — Net Metering Guidelines (accessed 2026-08-19)
- FPL — Net Metering Tiers (accessed 2026-08-19)
- Fla. Admin. Code R. 25-6.065 — Interconnection and Metering of Customer-Owned Renewable Generation (accessed 2026-08-19)
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