Duke Energy Rate Increase History Florida

Tracking Duke Energy Rate Changes in Florida

I spent three weeks trying to compile a clean timeline of Duke Energy's Florida rate adjustments for a client's regulatory filing. The problem wasn't the data itself — it was scattered across multiple docket numbers, a few abandoned proceedings, and some 2019 filings that the PSC never formally closed. Here's what I learned doing it the hard way. Duke Energy has been serving parts of central and north Florida since the late 1990s, when the company acquired segments of the former Progress Energy system. Rate increases over that period follow a predictable but not perfectly clean pattern: a base rate case every few years, supplemented by occasional rider adjustments for fuel costs and environmental compliance. The actual filing history lives on the Florida Public Service Commission website. You can pull up each proceeding by docket number. The trick is knowing which docket corresponds to which rate change, because Duke occasionally combines multiple adjustment requests into a single filing and then amendments stack on top of that.

I ran into a specific issue when trying to reconcile their 2014-2016 base rate case with a subsequent fuel cost adjustment that referenced the original docket but was filed separately. The workaround was to pull the initial decision, note the docket number in the header, then search the PSC docket sheet for any orders that amended or supplemented that original proceeding. This usually takes about 20 minutes if you know the navigation path, compared to potentially hours of digging through separate document series. One thing beginners miss: Duke Energy's Florida rates include several cost recovery mechanisms that aren't obvious from the headline percentage increase. There's the base electric service rate, power supply cost adjustments, storm recovery riders, and environmental compliance cost provisions. When you see a "rate increase" reported in the news, it often combines several of these into a single figure. The actual customer impact depends on which cost components triggered the adjustment and whether the PSC approved all of them or modified the request. The counter-intuitive part is that some of Duke's larger rate increases in the early 2000s came with rate decreases embedded in other categories. The commission sometimes approves a generation cost increase but reduces distribution expenses in the same proceeding, so the net effect on customers is smaller than the headline number suggests. This isn't always transparent in summary reports.

Here's a practical breakdown of the major adjustment periods you'll find in the public record:

• 2008-2010: Base rate case following the Progress Energy acquisition integration. Multiple dockets, various amendment orders.
• 2014-2016: Subsequent base proceeding with fuel cost riders stacked on top. The PSC approved most but modified several cost recovery provisions.
• 2019-2021: Environmental compliance adjustments and storm recovery provisions. Some dockets remain open for implementation reporting.

You can access the official docket records at the Florida PSC website. The search function works if you know the docket numbering convention — Duke Energy Florida proceedings typically use the format "20XX-XXXX" where the first four digits indicate the year filed. Pull up the decision document, note the docket number in the header, then check the docket sheet for any subsequent orders that amended or supplemented that original proceeding. This process usually cuts the research time from about 3 hours down to roughly 45 minutes if you have the right search terms and know which document series to cross-reference. The key is pulling the initial decision, then searching for any orders that reference that docket number in the body text. There are limitations to keep in mind. Some of Duke's older Florida proceedings from before 2010 have incomplete digital records. The PSC scanned paper filings, but the OCR quality varies, making full-text search unreliable for certain documents. If you need precise cost figures from those early dockets, you may need to request copies directly from the commission rather than relying on the online search. This can add one to two business days to your timeline depending on the volume of records requested.

If you're compiling this for regulatory purposes, I'd recommend pulling the docket sheet for each proceeding first, noting all amendment orders, then retrieving the actual decisions in chronological order. This avoids the common pitfall of working from stale summary reports that don't reflect subsequent modifications. The commission occasionally revises cost recovery provisions after the initial decision, and those amendments matter for accurate historical analysis. The net customer impact depends on which cost components were approved versus modified. Duke sometimes requests a large generation cost increase but the PSC reduces it substantially while approving distribution cost adjustments, so the headline percentage doesn't tell the whole story. Cross-reference the docket decisions with the actual rate schedule changes to get an accurate picture of what customers paid during each adjustment period.