Duke Energy Rate Increases: 45% Since 2020 (And More Coming) — The Off Grid Outpost

The Numbers Don’t Lie

If your Duke Energy bill feels higher than it used to, you’re not imagining it.

Since 2020, Duke Energy’s two North Carolina subsidiaries — Duke Energy Progress and Duke Energy Carolinas — have raised residential electricity rates by approximately 45% cumulatively. The average North Carolina residential customer now pays around 14 cents per kilowatt-hour, up from roughly 9.5-10 cents just five years ago.

Here’s what that looks like on a monthly bill. The average NC residential customer uses about 1,050 kWh per month:

Year	Approx. Rate (¢/kWh)	Approx. Monthly Bill
2020	~9.7¢	~$102
2021	~10.3¢	~$108
2022	~11.2¢	~$118
2023	~12.1¢	~$127
2024	~13.0¢	~$137
2025	~13.8¢	~$145
2026 (current)	~14.0¢	~$147

That’s an increase of roughly $45 per month — or about $540 more per year — compared to what you were paying in 2020. For the exact same electricity.

And it’s not done.

What’s Driving the Increases

Duke Energy’s rate increases aren’t arbitrary. They’re driven by real costs that the North Carolina Utilities Commission (NCUC) has approved — or is being asked to approve. Here are the main factors:

Data Center Boom

North Carolina has become one of the top destinations for data center construction in the United States. The numbers are staggering:

• 92 data centers have already been built in the state
• 128 more are planned or under construction
• Each large data center consumes as much electricity as 30,000 to 50,000 homes

These facilities generate significant economic activity and tax revenue. But they also require enormous grid upgrades — new substations, transmission lines, transformers, and generation capacity. Under North Carolina’s regulatory framework, the cost of building and maintaining the grid is shared among all ratepayers.

In practical terms, when a hyperscaler like Google, Apple, or Meta builds a data center in NC, every Duke Energy residential customer helps pay for the infrastructure upgrades that facility requires. The data center pays its own electricity bills, but the grid expansion costs flow through to everyone’s rates.

Infrastructure Investment

Duke Energy is in the middle of a massive capital expenditure program. Grid modernization, storm hardening, coal plant retirements, natural gas plant construction, and renewable energy integration all require billions in investment. Duke recovers these costs through rate cases — regulatory proceedings where they request permission to raise rates.

The company has filed rate cases with increasing frequency, and the approved increases have been substantial.

Fuel Costs

Natural gas prices have been volatile over the past several years. Since Duke Energy generates a significant portion of NC’s electricity from natural gas, fuel cost fluctuations directly affect what customers pay. Duke Energy passes fuel cost changes through to customers via fuel cost adjustment riders — line items on your bill that fluctuate based on the utility’s actual fuel expenses.

Corporate Profitability

It’s worth noting the other side of the ledger. Duke Energy is a publicly traded company (NYSE: DUK) that generates approximately $5 billion in annual net income. The company pays generous dividends to shareholders and has delivered consistent earnings growth.

This isn’t inherently wrong — utilities are regulated monopolies, and the regulatory compact allows them a “reasonable return” on their investments. But it does mean that every dollar of rate increase serves two masters: covering real infrastructure costs and delivering returns to shareholders. When your bill goes up 45% in five years, some of that increase flows directly to investor returns.

The Latest: The $1.73 Billion Rate Hike Request

In November 2025, Duke Energy filed a new rate case with the NCUC requesting a $1.73 billion revenue increase. If approved as filed, this would translate to approximately a 15% increase in residential rates, beginning in 2027.

What that means for your bill:

	Current (2026)	If Approved (2027)
Average Rate	~14.0¢/kWh	~16.1¢/kWh
Average Monthly Bill	~$147	~$169
Annual Cost	~$1,764	~$2,028

That’s an additional $264 per year for the average NC household — on top of the $540 increase already absorbed since 2020.

The NCUC will review this request through a regulatory proceeding that includes public comment, testimony from Duke Energy and consumer advocates, and ultimately a commission vote. Rate cases are often settled at less than the full requested amount, so the actual increase may be lower. But historical precedent suggests the increase will be substantial.

The 25-Year Problem

Individual rate increases are frustrating. But the real issue is the trajectory. When you zoom out and project Duke Energy’s rate trend over the 25-year lifespan of a solar panel system, the numbers get serious.

Duke Energy’s recent pattern has been roughly 4% annual rate escalation. Some years more, some years less, but 4% is a reasonable average based on the 2020-2026 period.

Here’s what 4% annual escalation does to your electric bill over 25 years:

Year	Monthly Bill	Annual Cost
2026 (today)	$147	$1,764
2031 (Year 5)	$179	$2,146
2036 (Year 10)	$218	$2,610
2041 (Year 15)	$265	$3,176
2046 (Year 20)	$322	$3,864
2051 (Year 25)	$392	$4,701

By 2051, if the 4% trend continues, the average NC household would be paying nearly $400 per month for electricity. That’s more than many people’s car payments.

The cumulative total is even more striking. Over 25 years at 4% annual escalation, the average NC household will pay approximately $75,000 to $90,000 in electricity bills to Duke Energy.

That’s not a typo. Seventy-five to ninety thousand dollars. For electricity.

And you’ll own nothing at the end of it. No asset. No equity. Just 25 years of receipts.

How Solar Changes the Equation

Solar is, at its core, a prepayment for 25+ years of electricity. You pay once — upfront — and then your electricity is effectively free for the life of the system.

Here’s why that matters in the context of rising Duke Energy rates:

Fixed Cost vs. Rising Cost

A solar system purchased today locks in your electricity cost at today’s price. Whether you pay $15,000 through The Off Grid Outpost or $30,000 through a traditional installer, your cost per kilowatt-hour is fixed the moment you flip the switch.

Meanwhile, Duke Energy’s cost per kilowatt-hour keeps rising. Every year that passes, the gap between what you would have paid Duke Energy and what you actually paid for solar grows wider.

The Investment Math

Let’s compare two scenarios for an average NC household:

Scenario A: Stay with Duke Energy

• 25-year electricity cost: ~$75,000 – $90,000 (at 4% annual escalation)
• You own nothing at the end

Scenario B: Go solar through The Off Grid Outpost

• System cost: ~$12,000 – $18,000 (depending on system size)
• 25-year electricity cost after solar: ~$0 – $2,000 (minimal grid purchases for cloudy periods or high-usage months)
• 25-year net savings: $55,000 – $78,000
• You own a tangible asset that adds value to your home

Even using the most conservative estimates, solar in North Carolina produces a return that would make most financial advisors jealous.

The Payback Accelerator

Here’s something that’s easy to miss: every Duke Energy rate increase shortens your solar payback period.

If you install solar today with a 7-year projected payback, and Duke Energy raises rates 15% in 2027, your payback period shrinks. The electricity your solar system produces becomes more valuable because the alternative — buying from Duke Energy — just got more expensive.

In a perverse way, Duke Energy’s rate increases are the best marketing solar has ever had. Every rate hike makes the case stronger.

What Happens to Net Metering

One important caveat: the value of solar depends partly on net metering policy — how much credit you receive for excess electricity you send to the grid.

Currently, Duke Energy’s net metering program credits residential solar customers at the full retail rate. If you’re paying 14 cents/kWh, you get 14 cents for every kWh you export. This makes solar economics very favorable.

Duke Energy is transitioning to a new structure called Rider NMB (Net Metering Bridge). The exact terms are being finalized through regulatory proceedings, but the general direction is toward lower export credits. This is a national trend — utilities across the country are working to reduce net metering compensation.

What this means for you:

• If you interconnect before the transition: You may be grandfathered under the current full-retail net metering structure for a defined period.
• Even under reduced net metering: Solar still makes strong financial sense because the majority of your solar production offsets electricity you would have purchased at full retail rate. Export credits are a bonus, not the foundation of solar economics.

For more detail on NC net metering and solar incentives, see our full breakdown: Solar Panel Cost in North Carolina.

What You Can Do

You can’t control Duke Energy’s rates. You can’t vote them out — they’re a regulated monopoly. You can attend NCUC hearings and file public comments on rate cases, and that’s worth doing, but it won’t stop the structural forces driving rates higher.

What you can control is your exposure to those rate increases.

Solar gives you a way to opt out of the utility rate escalator. Not completely — most grid-tied solar homes still draw some electricity from the utility at night or during extended cloudy periods. But a properly sized solar system with battery storage can offset 80-100% of your electricity consumption.

Here’s a reasonable action plan:

1. Understand your current costs. Pull your last 12 months of Duke Energy bills. Add up your total kWh consumption and total cost. That’s your baseline.

2. See what solar would cost. Use our free solar calculator to get a ballpark estimate, or design a full system with our AI tool. Both show you real pricing — not marketing numbers.

3. Compare the 25-year math. Put your projected utility costs next to the cost of a solar system. The comparison typically isn’t close.

4. Consider timing. Net metering transitions, potential future incentive changes, and continued rate escalation all suggest that earlier adoption captures more value. That said, don’t rush into a bad deal — a well-priced system next month beats an overpriced system today.

5. Explore your options. Whether you go through The Off Grid Outpost, a traditional installer, or full DIY, the most important thing is getting real, competitive pricing. Our North Carolina solar guide covers all your options.

Don’t wait for the next rate hike to start thinking about this. See what solar saves you — the math speaks for itself.