Duke Energy Florida passes $50 million in battery storage tax credits to customers, canceling a planned 2027 rate increase

Duke Energy Florida just announced it’s delivering $50 million in savings to customers in 2027 — and canceling a planned rate increase along the way. The utility is accelerating the return of investment tax credits tied to its Powerline Battery Energy Storage System in Citrus County, compressing what would normally be a 15-year credit cycle into a single year. That move eliminates a 2% base rate increase that had been built into the company’s 2025–2027 multiyear rate agreement.

Duke Energy Florida cancels 2027 rate increase with $50 million credit return

This didn’t happen by accident. State president Melissa Seixas pointed directly to the financial pressure customers are already facing as the driving force behind the strategy. “Our customers count on us to continually look for ways to keep our costs in check and help ease their overall financial burden — especially as prices continue to rise in seemingly every aspect of our daily lives,” she said.

The 2% base rate increase was part of a formal multiyear rate agreement covering 2025 through 2027. Eliminating it meant finding a way to generate equivalent financial relief from within existing operations—and the investment tax credits tied to the Powerline facility provided exactly that opening. By front-loading the credit return into a single year, Duke Energy Florida converted a long-term accounting benefit into something customers would actually feel. A planned rate hike disappears. Starting in 2027, customers keep more money.

Instead of spreading the credit return across a decade and a half, the company restructured the timeline to deliver the full $50 million within a single year.

How the accelerated tax credit strategy works

Investment tax credits tied to energy storage assets are typically returned to customers over the full lifespan of the equipment — in this case, 15 years. That’s the standard approach, designed to align the financial benefit with the period the asset is actually generating value.

Duke Energy Florida took a different path with the Powerline facility. Instead of spreading the credit return across a decade and a half, the company restructured the timeline to deliver the full $50 million within a single year. The Powerline Battery Energy Storage System sits in Citrus County and is expected to be completed in 2027, at which point it’ll become the company’s seventh battery storage site in Florida.

The practical effect is straightforward. Customers get the financial benefit of the tax credit far sooner than they otherwise would—not modest, incremental reductions trickling in over 15 years, but the entire credit landing at once, large enough to offset a planned rate increase entirely.

Broader impact: Rate reductions and projected savings for Florida customers

The 2027 savings don’t exist in isolation. Duke Energy Florida has been building a pattern of customer-facing financial relief over the past couple of years, and the numbers add up quickly.

In 2026, the company lowered residential customer rates three separate times. The year before that, it passed approximately $65 million in solar production tax credits directly to customers, reducing residential rates by at least $2.50 per 1,000 kilowatt-hours used — a figure expected to grow as more solar sites come online. The company is also working to establish 12 new solar energy sites by the end of 2028, projecting roughly $3 billion in displaced fuel costs over the lifetimes of those sites.

Customers who need help right now can access energy efficiency programs and financial assistance at duke-energy.com/SummerSolutions, including free home energy assessments and flexible payment plans.

Duke Energy Florida’s battery storage expansion plan and long-term outlook

The Powerline facility is one piece of a much larger buildout. Over the next 10 years, Duke Energy Florida plans to add 1.4 gigawatts of battery storage capacity across the state—and every dollar of investment tax credits generated by that expansion, projected to exceed $500 million, will be passed directly to customers.

Battery storage plays a specific, practical role here. Batteries store electricity when demand is low, then dispatch it during peak hours or when solar generation drops on cloudy days or after sunset. The more storage capacity Duke Energy Florida adds, the more useful its solar portfolio becomes. That connection between solar and storage sits at the center of what the company calls an “all-of-the-above” approach to power generation, and both technologies are expanding simultaneously.

A 2% base rate increase

For Duke Energy Florida’s 2 million customers across a 13,000-square-mile service area, the bottom line is this: a 2% base rate increase scheduled for 2027 has been canceled, replaced by $50 million in savings generated by accelerating the return of investment tax credits from the Powerline Battery Energy Storage System.

The strategy compresses a standard 15-year credit return into a single year. It builds on rate reductions already delivered in 2026 and $65 million in solar tax credits passed to customers in 2025. What comes next is larger still — more than $500 million in projected battery storage tax credits over the next decade, all committed to customer savings, alongside a growing 12,500-megawatt energy capacity that will keep generating credits as it expands.

Kelly Lippke

Kelly is an experienced writer with 15 years of experience exploring the big stories that shape our world, from tech breakthroughs and space exploration to climate, energy, and the fascinating quirks of science. She has a talent for turning complex ideas into sharp, memorable insights that stay with readers long after they’ve finished reading.