Alex Rivera
The biggest mistake most solar coverage makes right now is treating the expired federal tax credit as the whole story. Yes, the Section 25D residential credit died December 31, 2025, taking the 30% federal break with it. But the quieter crisis is what’s happening to net metering, the billing mechanism that determines how much your utility pays you for power you send to the grid. In state after state, those rates are being cut, capped, or restructured in 2026, and the timing of your solar decision has never mattered more.
Net metering was always the math behind the payback period. When it works well, you’re essentially banking excess daytime generation and spending those credits at night, cutting your bill to near zero. When it doesn’t, you’re selling power to the utility at wholesale rates and buying it back at retail, which is a losing trade. Right now, both versions of that story are playing out simultaneously across the country, in different states, sometimes affecting only customers who sign contracts after a specific date.
- The 30% federal solar tax credit expired January 1, 2026; net metering is now the primary ROI driver for homeowners who buy outright.
- California's NEM 3.0 cut export credits ~75%, from ~30 cents/kWh to 5–8 cents/kWh, fundamentally changing the battery calculus.
- A Massachusetts homeowner earns ~$0.30/kWh for exports; an Idaho homeowner on avoided-cost billing earns as little as $0.04/kWh.
- North Carolina's Duke Energy bridge-rider window closes December 31, 2026; installations before then may lock in better rates for 15 years.
- Washington State utilities are already hitting statutory net metering caps, putting 1:1 retail credits at real risk next legislative cycle.
The Federal Vacuum Net Metering Now Fills
Without the 25D credit, a homeowner buying a $25,000 system outright no longer gets $7,500 back from the IRS in April. That changes the payback math immediately. According to EnergySage’s 2025 data, the average pre-credit payback period in a good-net-metering state ran about seven to nine years. Remove the tax credit and add a weak net metering policy, and you’re looking at twelve to fifteen years in the worst cases, which starts to bump against typical panel warranty horizons and loan terms.
State policy is now doing the heavy lifting the federal government just dropped. The problem is that state policies are not uniform, not stable, and in many cases actively getting worse for new customers. What you lock in today may be grandfathered for ten or fifteen years. What your neighbor locks in next January might be significantly less valuable. That asymmetry is the story of solar in 2026.
Where the Cuts Are Happening and How Bad They Are
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California set the template that other utilities are studying. NEM 3.0, which took effect for new applicants in April 2023, slashed export credits from roughly 30 cents per kilowatt-hour down to 5 to 8 cents, a reduction of approximately 75%. The practical effect: solar-only systems in California now have much longer payback periods, and the calculus has shifted firmly toward pairing panels with a battery like the Tesla Powerwall or Enphase IQ Battery so you actually consume your own generation rather than export it cheaply. California effectively turned a net metering question into a self-consumption question, and the rest of the country is watching.
Virginia’s situation is more acute because it’s still unresolved. The State Corporation Commission was required to rule by May 1, 2026 on Dominion Energy’s proposal to reduce solar export credit values for new customers. An $11.24/month rate increase for residential customers is already in effect, and new solar customers face the prospect of considerably lower export compensation than existing customers receive. If you’re in Dominion territory and have been sitting on a solar quote, this is the moment where waiting costs you money, not saves it.
North Carolina gives the clearest deadline. Duke Energy’s Net Metering Bridge Rider transition runs through the end of 2026, and homeowners who get their systems installed before December 31 may lock in the bridge-rider billing structure for up to 15 years, according to Cape Fear Solar’s analysis of Duke’s filing. That’s a concrete, expiring window. Miss it and you’re on the successor tariff, which is structured less favorably.
The Geographic Lottery Is Getting More Extreme
The gap between the best and worst net metering states is already wide enough to shift payback on an identical system by five years or more. Consider this comparison:
| State | Export Rate (approx.) | Billing Structure | Estimated Payback Impact |
|---|---|---|---|
| Massachusetts | ~$0.30/kWh | Retail rate credit | Best-case scenario |
| California (NEM 3.0) | ~$0.06/kWh | Avoided cost (time-varied) | Requires battery to pencil |
| North Carolina (bridge) | ~$0.09/kWh | Bridge rider (expiring 2026) | Good if locked in now |
| Virginia | ~$0.07/kWh (proposed) | Under SCC review | Uncertain for new customers |
| Idaho | ~$0.04/kWh | Avoided cost | Five-plus extra years of payback |
Massachusetts is something of a unicorn right now. Its SMART program and retail-rate net metering make it one of the few states where the economics of an owned system without the federal credit still land in the seven-to-nine year payback range for many homeowners. Idaho, by contrast, operates on avoided-cost billing, meaning the utility pays you roughly what it would cost them to generate that power themselves, which in a hydro-heavy state is almost nothing.
Washington and the States That Haven’t Broken Yet
Washington State is worth watching specifically because the cuts haven’t happened yet but the conditions for them are in place. Several utilities have already hit the statutory net metering capacity thresholds written into state law, and the state is currently conducting a value-of-solar study that will inform the next legislative session. The A-R Solar analysis from July 2026 puts it plainly: 1:1 retail credits may not survive the next legislative cycle. If you’re in Washington and qualify for a system today, the current 1:1 structure is available. Whether it will be in 2027 or 2028 is genuinely uncertain.
This is the pattern. States don’t usually announce “net metering is ending on this date.” They commission studies, hold utility commission proceedings, approve new tariff structures, and then the effective date arrives and new customers are on a different deal than old ones. The transition window is the only moment when a homeowner can choose which side of the line to be on.
What to Actually Do With This Information
Check your state’s current net metering tier, specifically whether you’d be a new applicant under a grandfathered rate or the current successor tariff. In California, anyone going solar now is on NEM 3.0; a battery is no longer optional if you want reasonable payback. In North Carolina and Virginia, the question is urgency: the deadline is real and the difference in long-term value is measurable in thousands of dollars. In Washington, the risk is forward-looking rather than immediate, but it’s not hypothetical.
The federal tax credit carried a lot of bad solar decisions for a decade. It made the math work even when the underlying policy was mediocre. That cushion is gone. What’s left is local: your utility, your state’s commission rulings, and whether you move before or after an expiration date that no installer’s brochure will highlight for you.
Sources
- Net Metering in 2026: How Every US State Compensates Solar Homeowners (May 29, 2026)
- Net Metering Rules by State (2026 Guide) , Green Energy Calculators (June 9, 2026)
- What Duke Energy’s Net Metering Changes Mean for Your Solar Savings After 2026 (July 2026)
- How Net Metering Works in Virginia (And Why 2026 Changes Everything) (April 16, 2026)
- Washington Net Metering in 2026: What Homeowners Should Know (July 2026)
- Net Metering in 2026: State-by-State Guide to What’s Changed , Nuwatt Energy (April 7, 2026)
Photo: Connor Scott McManus via Pexels
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