Solar Panels in Raleigh, NC: Duke Energy Progress Rates, Higher Fixed Fees, and Why the Pending Rate Case Changes the Calculation

Raleigh sits in Duke Energy Progress territory — the sister utility to Duke Energy Carolinas, which serves Charlotte — and shares the same Net Metering Bridge program and overall state incentive landscape. What separates the Raleigh market is Duke Energy Progress’s fee structure, which imposes higher monthly fixed charges on solar customers than Duke Energy Carolinas does. DEP’s NMB minimum monthly bill is $28 (versus DEC’s $22 in Charlotte), and the capacity charge of $0.62 per kW-DC per month is more than double DEC’s $0.28. On a 13.68kW average Raleigh system, those fees add approximately $8.48/month in capacity charges alone on top of the $28 minimum — costs that cannot be offset by solar production or net metering credits. This fee structure explains why Raleigh’s solar payback period runs longer than Charlotte’s despite lower installation costs per watt. The counterweight is Duke Energy Progress’s pending rate case: DEP has requested an increase of $23.11 per month for a 1,000 kWh residential customer, effective January 1, 2027 — the largest proposed monthly increase in this dataset — which would substantially improve the economics of systems installed at today’s prices.

Duke Energy Progress vs. Duke Energy Carolinas: Why the Fee Structure Matters in Raleigh

North Carolina’s Net Metering Bridge program applies identically in both Duke Energy territories — the 3.4¢/kWh export credit, the monthly minimum bill, the capacity charge, and the self-consumption offset at full retail rate are the same policy. But the fee levels differ between the two subsidiaries, and those differences meaningfully affect Raleigh solar economics.

Duke Energy Progress (Raleigh) NMB monthly charges: $28 minimum monthly bill + $0.62 per kW-DC capacity charge + $0.44 per kW non-bypassable charge. For a 13.68kW system, the per-kW charges alone run approximately $14.75/month in addition to the $28 minimum. These charges cannot be offset by solar generation or net metering credits — they appear on every bill regardless of how much the solar system produces.

Duke Energy Carolinas (Charlotte) NMB monthly charges for comparison: $22 minimum + $0.28 per kW-DC capacity charge + $0.36 per kW non-bypassable charge. A 13.61kW Charlotte system incurs approximately $8.73/month in per-kW charges on top of the $22 minimum.

The monthly fee gap between a typical Raleigh and Charlotte NMB solar customer runs approximately $12–$15 per month — over 25 years, that compounds into a meaningful savings differential. It directly explains why EnergySage projects a 12.64-year payback for Raleigh versus 9.6 years for Charlotte, and why 25-year savings in Raleigh ($19,254 per EnergySage) trail Charlotte ($36,432) despite Raleigh having slightly lower per-watt installation costs.

The pending Duke Energy Progress rate case amplifies the urgency argument more forcefully than any other market in this dataset. DEP has filed for a $23.11/month increase for a 1,000 kWh residential customer effective January 1, 2027, with a further $6.59/month increase in 2028. A Raleigh homeowner paying approximately $259/month today for electricity could see that bill rise to approximately $289 in 2027 and $295 in 2028 if the full request is approved. Every dollar of rate increase that occurs after a solar system is interconnected improves that system’s annual savings without changing its cost. The 20-year retail rate lock-in under NMB means a homeowner who installs in 2026 benefits from the full value of every subsequent DEP rate increase at the self-consumption offset level for two decades.

Right-Sizing for the DEP Fee Environment and the Wake EMC Alternative

The same right-sizing imperative that applies in Charlotte is even more critical in Raleigh’s DEP territory. With higher fixed monthly charges and the same 3.4¢ export credit, oversizing a Raleigh system produces two compounding penalties: excess exports earning 3.4¢ instead of 17¢, and fixed monthly fees that increase with larger system DC capacity. The capacity charge of $0.62/kW/month means every additional kilowatt of DC capacity added to a Raleigh system costs approximately $7.44/year in unavoidable fees — a sizing disincentive that doesn’t exist in markets with pure volumetric billing.

A well-designed Raleigh system under DEP’s NMB achieves three objectives simultaneously: maximum annual self-consumption (minimizing low-value exports), minimum system size consistent with consumption offset goals (minimizing per-kW capacity charges), and strong tilt toward battery storage to capture daytime surplus at home rather than exporting it. Raleigh’s high average household consumption — approximately 1,553 kWh/month per EnergySage — gives more latitude for larger systems because higher consumption absorbs more production at the full retail rate. Households with EVs, heat pumps replacing gas systems, or other large electrical loads are meaningfully better solar candidates in DEP territory because they can absorb more production at 17¢/kWh rather than exporting at 3.4¢.

An important Raleigh market nuance: significant portions of the suburban Triangle — including parts of Cary, Apex, Wake Forest, Garner, and Fuquay-Varina — are served by Wake Electric Membership Corporation rather than Duke Energy Progress. Wake EMC operates under a different net billing structure, crediting solar exports at approximately 4¢/kWh with no annual true-up. Wake EMC also does not allow solar leases or third-party power purchase agreements — customers in Wake EMC territory must purchase or finance their own systems. The economics for Wake EMC customers are similar to DEP NMB in structure but different in detail; homeowners should confirm their utility provider before evaluating specific incentive programs, as PowerPair eligibility and fee structures depend entirely on whether Duke Energy Progress is the serving utility.

Solar Costs, Incentives, and the Pending DEP Rate Case in 2026

Raleigh is among the most affordable solar markets per watt in North Carolina, averaging approximately $2.29/W as of February 2026 per EnergySage — slightly below Charlotte’s $2.33 and among the lowest in this dataset. The average Raleigh system size is approximately 13.68kW, driven by high household consumption; at $2.29/W this costs approximately $31,300 before incentives.

North Carolina’s incentive stack for Raleigh homeowners mirrors Charlotte exactly: Duke Energy’s PowerPair rebate (up to $9,000 for solar-plus-battery — $0.36/W on inverter capacity up to 10kW = $3,600 max, plus $400/kWh on battery up to 13.5kWh = $5,400 max), the 80% Solar Energy System Property Tax Exclusion, and net metering savings under NMB. There is no state income tax credit and no state sales tax exemption for solar in North Carolina. PowerPair enrollment opens May 10 annually; as of late 2024, approximately 47% of Duke Energy Progress allocation remained, suggesting meaningful but not unlimited availability. Installer must be a Duke Energy-approved Trade Ally, and battery must be from Duke’s approved vendor list.

EnergySage projects a payback period of 12.64 years for Raleigh, with 25-year savings of approximately $19,254 for a purchased system — the longer payback and lower savings compared to Charlotte reflect DEP’s higher fixed monthly fees. The pending DEP rate case, if approved at or near the requested amount, improves Raleigh’s solar economics substantially: a $23.11/month increase in 2027 and $6.59/month in 2028 would push the effective DEP retail rate from approximately 17¢ to roughly 18.5–19¢/kWh, shortening payback and expanding 25-year savings for systems installed at 2026 costs. Raleigh homeowners who install and interconnect before January 2027 capture the 20-year NMB lock-in at the current rate baseline while benefiting from every approved increase thereafter.

Frequently Asked Questions

Why does Raleigh solar have a longer payback period than Charlotte?

Raleigh falls under Duke Energy Progress, while Charlotte is served by Duke Energy Carolinas. Both use the same Net Metering Bridge program with the same 3.4¢/kWh export credit, but DEP charges higher monthly fixed fees than DEC. DEP’s NMB minimum monthly bill is $28 (versus $22 for DEC), and DEP’s capacity charge is $0.62/kW-DC/month versus DEC’s $0.28/kW. On a 13.68kW system, DEP customers pay approximately $14.75/month in per-kW charges — compared to roughly $8.73/month for a similar Charlotte system. These fees cannot be offset by solar production or net metering credits. They appear on every bill regardless of solar output. The cumulative effect over 25 years is substantial, directly explaining the payback difference between the two cities. The good news is that DEP’s pending rate case proposes a larger monthly increase ($23.11) than DEC’s ($17.22), meaning the rate-lock value of installing now is proportionally greater in Raleigh than in Charlotte.

What is Wake Electric Membership Corporation and how does it affect solar in the Raleigh area?

Wake Electric Membership Corporation (Wake EMC) is an electric cooperative serving portions of Wake County and surrounding areas, including parts of Cary, Apex, Wake Forest, Garner, and Fuquay-Varina. Homeowners in Wake EMC territory are not Duke Energy Progress customers and do not access Duke Energy programs including PowerPair or the NMB rider. Wake EMC uses a net billing structure rather than traditional net metering, crediting solar exports at approximately 4¢/kWh — similar in value to DEP’s NMB export credit but under different terms. Wake EMC does not permit solar leases or third-party power purchase agreements; customers must own their systems. Before requesting solar quotes, confirm your electric utility by looking at your monthly bill or entering your address on the Wake EMC website. If you’re in Wake EMC territory, your installer options and incentive programs differ from those available to DEP customers. Some installers specialize in one territory or the other, so utility confirmation upfront avoids mismatched quotes.

What does solar cost in Raleigh and when does it pay off?

Raleigh solar averages approximately $2.29/W as of February 2026 per EnergySage, making it one of the least expensive solar markets per watt in this dataset. The average Raleigh system size is approximately 13.68kW, reflecting high household electricity consumption; this costs approximately $31,300 before incentives. After the PowerPair solar rebate (up to $3,600 for solar systems with qualifying batteries), net system cost before property tax effects is approximately $27,700. North Carolina has no state income tax credit and no state sales tax exemption for solar. The 80% property tax exclusion applies to solar’s added value. EnergySage projects a payback period of approximately 12.64 years and 25-year savings of approximately $19,254 for a Raleigh homeowner purchasing a system outright. The pending Duke Energy Progress rate case — proposing $23.11/month for a 1,000 kWh customer in 2027, with an additional $6.59/month in 2028 — would meaningfully shorten the payback period and increase lifetime savings for systems installed at today’s prices.

Does the PowerPair rebate apply to Raleigh homeowners in Wake EMC territory?

No. Duke Energy’s PowerPair rebate is only available to Duke Energy Progress and Duke Energy Carolinas customers — it is a Duke Energy program, not a statewide program. Wake Electric Membership Corporation customers are not eligible for PowerPair, regardless of what solar installer they use. If you are in Wake EMC territory in the Raleigh suburbs, your available incentives are limited to the statewide 80% Solar Energy System Property Tax Exclusion, Wake EMC’s net billing credits (approximately 4¢/kWh for exports), and any financing incentives passed through via lease or PPA if Wake EMC permits those arrangements. Wake EMC’s policy on third-party ownership has historically been restrictive — verify current terms directly with the cooperative before assuming lease or PPA options are available. Homeowners in Wake EMC territory should request quotes specifically from installers familiar with cooperative interconnection requirements, as the process and approved system configurations may differ from Duke Energy Progress procedures.

Can I get a solar lease or PPA in Raleigh?

It depends on your utility. Duke Energy Progress customers can access solar leases and power purchase agreements (PPAs) through national installers like Sunrun, Freedom Forever, and others operating in the Triangle market. Leases and PPAs under DEP require interconnection through Duke Energy’s standard application process and place customers on NMB or RSC riders. Wake Electric Membership Corporation customers cannot access third-party ownership arrangements — Wake EMC prohibits solar leases and PPAs in its service territory, meaning Wake EMC customers must purchase or finance their own systems. Before engaging any installer, confirm your utility provider and ask explicitly whether leases or PPAs are available in your territory. For DEP customers, leases can lower the barrier to entry by eliminating upfront cost, though total 25-year savings are lower than for a purchased system because the financing party retains ownership benefits.