Before the credits: the Florida rule that decides whether your solar can connect

I. What rule 25-6.065 actually controls

Rule 25-6.065 applies to customers of Florida's investor-owned utilities, Florida Power and Light, Duke Energy Florida, Tampa Electric, and the smaller ones, who want to connect customer-owned renewable generation, usually rooftop solar, and run it in parallel with the grid. It sets a standardized application, a standardized interconnection agreement, equipment and safety standards, and review timelines. Municipal utilities and electric cooperatives set their own terms, so if a city utility serves your meter, this is not your rule. Confirming which utility actually bills you is the first real step.

Interconnection is legally distinct from crediting, even though one rule covers both. You can be approved to connect and still see the value of your exports argued somewhere else. An honest note on history: a 2022 bill that would have phased down net-metering credits in Florida was vetoed, so the credit side stayed roughly as it was. The connection mechanics, the tiers and the clock, are the stable part, and the part that keeps panels from switching on.

II. Three tiers, sized to your system

Capacity decides the tier, and the tier decides how much paperwork and review you face. As the rule defines them, Tier 1 covers systems up to about 10 kilowatts, which is most houses; Tier 2 runs from there to roughly 100 kilowatts, the range for a large home, a church, or a small business; Tier 3 covers the big ones, on the order of 100 kilowatts up to 2 megawatts. A typical Florida rooftop array sits well inside Tier 1.

Size matters because the higher tiers carry heavier requirements: more detailed engineering review, a more involved agreement, and in some cases a study of what the system does to the local circuit. If your installer sized the array near a tier boundary, ask which tier the paperwork assumes. Landing one kilowatt over a line can change the agreement, the insurance expectation, and how long the utility takes to say yes.

III. Insurance, equipment, and the review clock

Three practical requirements trip people up. First, insurance: the rule sets liability-insurance expectations that scale with tier, and these have been revised over time, so check the current rule text rather than an old installer handout. Second, equipment: inverters generally must meet recognized safety and anti-islanding standards (anti-islanding means the system shuts off automatically during an outage so it cannot energize a line a utility worker is touching), typically the UL 1741 and IEEE 1547 standards. Third, the external disconnect switch and metering the utility may require.

Then the clock. The rule gives the utility a set window to acknowledge the application, say what is missing, and either approve the agreement or explain why not, with the shortest timelines for Tier 1 systems. The honest caveat is that the clock only runs on a complete application, so a missing signature or an unlabeled wiring diagram sends you back to waiting. Permission to operate, the final signoff that lets you close the switch, comes at the very end, not when the panels go up.

IV. Worth watching this month

1. Confirm which utility serves your meter, because an investor-owned utility follows Rule 25-6.065 while a municipal utility or a cooperative sets its own interconnection terms.

2. Before signing anything, pull your utility's current interconnection packet and the FPSC rule text side by side, since the packet should mirror the rule and any gap is worth a question.

3. Watch for the utility's written acknowledgment of your application, roughly the start of the review clock, and note the date so you can tell a routine wait from a stalled one.

4. If your system sits near a tier boundary, about 10 kilowatts or about 100 kilowatts, check which tier your paperwork assumes before it is submitted.

5. Track the FPSC docket pages for any open rulemaking touching 25-6.065, since changes here are occasional rather than routine, but they reset the ground rules when they happen.

Is interconnection approval the same as my net-metering credits?

No. One rule covers both, but connecting to the grid and the value of the power you export are separate questions. You can be cleared to connect and still see the credit terms decided elsewhere.

My panels are installed. Why can't I turn them on?

The final step is permission to operate from the utility, which comes after the interconnection agreement is approved and any required inspection or meter change is done. Switching on before then can violate the agreement you signed.

Does this rule cover my city or cooperative utility?

Not directly. Rule 25-6.065 governs Florida's investor-owned utilities. Municipal utilities and electric cooperatives set their own interconnection rules, though they often look similar in outline.

How long does the review take?

The rule sets deadlines, with the fastest for small Tier 1 systems, but the clock only runs once your application is complete. A missing document is the most common cause of delay, not utility foot-dragging.

Do I need special insurance?

The rule sets liability-insurance expectations that increase with system size and that have changed over the years. Check the current rule text and your utility's packet rather than relying on older guidance.