Net metering — the policy that credits solar homeowners for excess electricity sent back to the grid — is undergoing major changes across the U.S. in 2026. California’s NEM 3.0, which took full effect in 2024, slashed export credits by roughly 75% for new solar customers, and several states are now considering similar reforms. For homeowners considering solar in 2026, net metering policy is the single biggest factor determining payback period — often making the difference between a 6-year payback and a 12+ year payback. Understanding your state’s current rules is critical before signing any solar contract.
Net metering (NEM) is a billing arrangement between solar homeowners and their electric utility. When your solar panels produce more electricity than your home uses, the excess flows back to the grid. Net metering ensures you receive a credit on your electric bill for that exported energy.
Under classic “NEM 1.0” net metering:
For example, if your retail electricity rate is $0.16/kWh and you export 500 kWh in a month, you earn a $80 credit. Under traditional full-retail net metering, one kWh exported offsets one kWh consumed — a straightforward 1:1 exchange.
Net metering directly determines your solar payback period. Without it, excess solar production has minimal financial value. For a typical 8 kW system generating 11,000 kWh/year, roughly 40–60% of production may be exported to the grid depending on your daytime consumption. If that exported energy is credited at full retail rates, annual savings might be $1,600–$2,200. If credits drop to avoided-cost rates ($0.04–$0.06/kWh), annual savings could fall to $900–$1,200 — extending payback from 7 years to over 12 years.
Use our solar panel savings calculator to model how net metering changes affect your specific situation.
California’s transition to NEM 3.0 (also called the Solar Billing Plan or Net Billing Tariff) is the most consequential net metering change in U.S. history. Adopted by the California Public Utilities Commission in December 2022 and fully effective for new enrollments since April 2024, it fundamentally changed solar economics in the nation’s largest solar market.
| Feature | NEM 2.0 (Pre-2024) | NEM 3.0 (2024–Present) |
|---|---|---|
| Export credit rate | ~$0.25–$0.35/kWh (near retail) | ~$0.04–$0.08/kWh (avoided cost) |
| Rate structure | TOU with modest differentials | TOU with extreme peak/off-peak spread |
| Credit mechanism | Monthly netting, annual true-up | Instantaneous hourly billing |
| Grid charge | $8–$15/month | $15–$24/month (varies by utility) |
| Grandfathering | 20 years from interconnection | 20 years from interconnection (NEM 2.0 systems) |
Under NEM 3.0, export credits are calculated using the “avoided cost” methodology — essentially what the utility would have paid to generate or purchase that same electricity from another source. This rate varies by:
The practical result: a kWh exported at noon in March might earn $0.03/kWh, while the same kWh exported at 6 PM in August could earn $0.12/kWh. This creates a massive incentive to store solar energy in batteries and discharge during peak evening hours.
For a typical California home (8 kW system, $22,000 after ITC):
Batteries have gone from optional to essential in California. Under NEM 3.0, a solar-only system loses roughly 55–65% of its export value compared to NEM 2.0. Adding a battery like a Tesla Powerwall or Enphase IQ Battery allows you to store midday excess and use it during expensive evening hours — essentially recreating the economics of net metering through self-consumption.
See our solar battery storage guide for detailed battery economics and payback calculations.
Net metering is regulated at the state level, creating a patchwork of policies that vary dramatically. Here’s where every major solar state stands in 2026.
| State | Net Metering Policy | Credit Rate | TOU Required? | Grandfathering | Status |
|---|---|---|---|---|---|
| California | NEM 3.0 (Net Billing) | Avoided cost (~$0.04–$0.08/kWh) | Yes | 20 years | Active |
| New York | VDER (Value Stack) | Value of solar (~$0.07–$0.12/kWh) | Varies | 20 years | Active |
| Texas | No state mandate | Varies by utility | Varies | Varies by utility | Fragmented |
| Florida | Full retail net metering | Full retail (~$0.13–$0.15/kWh) | No | No state rule | Under threat |
| Arizona | Net billing (reduced) | ~$0.07–$0.10/kWh | Optional | 10 years | Active |
| Nevada | Net billing | ~$0.06–$0.09/kWh | Optional | 20 years | Active |
| Massachusetts | Net metering (caps apply) | Full retail (~$0.24–$0.30/kWh) | No | 20 years | Strong |
| New Jersey | Full retail net metering | Full retail (~$0.16–$0.19/kWh) | No | No expiration | Strong |
| Colorado | Full retail net metering | Full retail (~$0.12–$0.14/kWh) | No | No expiration | Strong |
| North Carolina | Full retail net metering | Full retail (~$0.11–$0.13/kWh) | No | No expiration | Strong |
| Illinois | Full retail net metering | Full retail (~$0.12–$0.14/kWh) | No | No expiration | Strong |
| Oregon | Net billing (transitioning) | Reduced (~$0.06–$0.08/kWh) | Yes | 15 years | Changing |
| Hawaii | Grid-supply (reduced) | ~$0.10–$0.15/kWh | Yes | 20 years | Active |
| Connecticut | Net metering (reforming) | Full retail (under review) | Varies | 20 years | Under review |
| Minnesota | Full retail net metering | Full retail (~$0.12–$0.14/kWh) | No | No expiration | Strong |
These states still offer full retail-rate net metering with no expiration date:
If you live in one of these states, solar economics are highly favorable. Use our solar panel ROI calculator to see your projected returns.
Several states have active proceedings that could reduce solar credits:
If you live in a state with threatened net metering, going solar now could lock in favorable rates through grandfathering provisions that typically last 10–20 years.
Time-of-use (TOU) rates charge different prices for electricity depending on when you use it. A typical TOU structure in 2026 looks like this:
| Period | Hours | Rate ($/kWh) | Solar Production |
|---|---|---|---|
| Off-peak | 10 PM – 6 AM | $0.08–$0.12 | None (nighttime) |
| Midday | 9 AM – 3 PM | $0.10–$0.14 | Peak solar production |
| Peak | 4 PM – 9 PM | $0.25–$0.45 | Declining/none |
| Super peak (summer) | 5 PM – 8 PM | $0.40–$0.60 | Minimal |
The problem for solar homeowners is clear: solar panels produce the most electricity during the cheapest hours and produce nothing during the most expensive hours. Under TOU rates combined with reduced net metering, exporting solar midday earns pennies while buying electricity in the evening costs dollars.
The TOU shift forces a fundamental change in how solar homeowners think about their systems:
Old strategy (NEM 1.0/2.0): Maximize total production, export everything you don’t use, bank credits for nighttime. Orientation: face south for maximum annual output.
New strategy (NEM 3.0/TOU): Maximize self-consumption, minimize exports, store energy for peak hours. Orientation: consider west-facing panels to extend production into evening peak periods.
| Metric | South-Facing | West-Facing |
|---|---|---|
| Total annual production | 100% (baseline) | 85–90% |
| Peak hour production (4–8 PM) | 15–20% of daily total | 30–40% of daily total |
| Value under TOU (NEM 3.0) | Lower (midday exports cheap) | Higher (peak exports valuable) |
| Best for | Flat-rate net metering states | TOU + reduced credit states |
In states with TOU rates and reduced net metering credits, west-facing panels can be worth 10–20% more than south-facing panels despite producing less total energy. This counterintuitive result comes from producing energy when it’s most valuable.
The difference net metering makes is dramatic. Here’s how the same 8 kW system performs under different policy regimes:
| Scenario | Annual Savings | 25-Year Savings | Payback Period | ROI |
|---|---|---|---|---|
| Full retail NEM (e.g., NJ, CO) | $1,800–$2,200 | $52,000–$65,000 | 6–7 years | 220–280% |
| Reduced credit NEM (e.g., AZ, NV) | $1,100–$1,400 | $32,000–$42,000 | 9–11 years | 150–190% |
| Avoided cost (CA NEM 3.0, solar only) | $800–$1,100 | $23,000–$33,000 | 12–15 years | 100–140% |
| Avoided cost + battery (CA NEM 3.0) | $1,400–$1,800 | $40,000–$52,000 | 8–10 years | 170–220% |
Adding battery storage fundamentally changes the economics in states with reduced net metering. A solar + battery system costs $8,000–$15,000 more than solar alone, but in NEM 3.0-type environments, it can:
The 30% federal ITC applies to battery storage as well, reducing the effective battery premium to $5,600–$10,500 after tax credit.
See our solar battery storage guide for a deep dive on whether batteries make sense for your situation.
1. New Jersey — Full retail net metering with no system cap for residential, no sunset clause, and additional SREC-II income ($80–$120/SREC). Annual solar savings for an 8 kW system: $2,000–$2,600.
2. Massachusetts — Full retail net metering (up to 10 kW residential), plus the SMART program pays $0.06–$0.12/kWh for solar production for 10 years. Combined annual benefit: $2,200–$3,000.
3. Colorado — Full retail net metering, no expiration, strong utility compliance. Additional benefit: low electricity costs mean solar still beats the grid easily. Annual savings: $1,300–$1,700.
4. Illinois — Full retail net metering with robust Adjustable Block Program incentives ($0.066–$0.085/kWh RECs). Annual savings with incentives: $1,600–$2,200.
5. New York — The Value of Distributed Energy Resources (VDER) model is more complex than simple net metering, but strong value stack components (energy + capacity + environmental) plus NY-Sun rebates make solar highly rewarding. Annual savings: $1,500–$2,100.
1. California (for new systems) — NEM 3.0’s avoided cost rates make solar-only systems economically marginal without batteries. The saving grace is sky-high electricity rates ($0.28–$0.40/kWh) that still make self-consumption valuable.
2. Hawaii — Already transitioned away from net metering to grid-supply and self-supply programs. Export credits are limited and new rooftop solar installations must include battery storage or smart inverters.
3. Nevada — Shifted to net billing at reduced rates in 2023–2024. Export credits of $0.06–$0.09/kWh are well below retail. Grandfathering exists for older systems.
4. Arizona — APS and other utilities moved to net billing with export rates around $0.07–$0.10/kWh. Solar still makes sense due to high production and rising retail rates, but payback periods have lengthened.
5. Oregon — Transitioning from net metering to a net billing model. Credits for exported solar are declining, with full implementation of reduced rates expected by 2027.
Most states that change net metering policies include grandfathering provisions that protect existing solar customers for 10–20 years. Key grandfathering details:
The critical takeaway: if your state has strong net metering but is considering changes, going solar now could lock in favorable rates for two decades. Once a reform takes effect, it typically applies only to new customers.
Under generous net metering, oversizing your system was a smart strategy — more production meant more credits. Under reduced net metering, oversizing can actually hurt:
If you’re in a state that has already reformed net metering (CA, NV, AZ, HI), strongly consider installing solar and battery storage simultaneously:
Explore solar panel financing options to understand how to fund a solar + battery system.
If your state has poor net metering or you can’t install panels on your roof, community solar programs offer an alternative path to solar savings. Under community solar:
Community solar is available in 40+ states as of 2026, with the strongest programs in Minnesota, Massachusetts, New York, Colorado, and Illinois.
See our community solar programs guide for state-by-state availability and enrollment details.
Net metering is a billing arrangement that credits solar homeowners for excess electricity sent back to the grid. Under full retail net metering, you receive a 1:1 credit for every kWh exported — meaning one kWh sent to the grid offsets one kWh you consume later. This can reduce your electricity bill by 70–100%. In states with reduced credits like California’s NEM 3.0, export values drop to $0.04–$0.08/kWh, significantly extending payback periods.
NEM 3.0 is California’s current solar billing structure, effective since April 2024. It shifted from near-retail-rate export credits to “avoided cost” rates of $0.04–$0.08/kWh — a 75% reduction. It uses hourly time-of-use billing where export value varies by time of day and season, making battery storage essential for new solar installations.
As of 2026, states with full retail-rate net metering include New Jersey, Colorado, Illinois, North Carolina, Massachusetts, and Minnesota. These states credit solar exports at the full retail rate, making payback periods typically 6–8 years. However, several have ongoing regulatory proceedings that could reduce credits. Check your state’s current status before deciding.
TOU rates charge $0.25–$0.45/kWh during peak evening hours but only $0.08–$0.14/kWh during off-peak midday hours. This creates a mismatch — solar peaks when rates are cheapest. Under TOU with reduced net metering, exporting midday earns minimal credits while buying evening power is expensive. Batteries or west-facing panels help maximize value under TOU billing.
Yes, most states include grandfathering provisions for existing solar customers. California offers 20 years from interconnection under NEM 2.0. Nevada provides 20 years. Arizona offers 10 years. Going solar before a policy change locks in favorable rates for a decade or more. Always get grandfathering terms confirmed in writing from your utility.
In states like California, Arizona, or Nevada with reduced credits, batteries are often essential for good economics. A solar-only system under NEM 3.0 may take 12–15 years to pay back; adding a battery improves it to 8–10 years. Battery costs ($8,000–$15,000) are partially offset by the 30% federal ITC. See our solar battery storage guide for detailed analysis.
Transitioning from full retail to avoided-cost rates can reduce annual savings by 40–60% — from $1,800–$2,200/year to $800–$1,100/year for an 8 kW system. Over 25 years, that’s a difference of $20,000–$35,000. Payback extends from 6–7 years to 12–15 years. Batteries recover roughly half the lost savings.
If your state has strong net metering, go solar now. Most reforms grandfather existing systems for 10–20 years, so you lock in today’s rates. Waiting risks losing those credits entirely. Use our solar panel ROI calculator to compare your savings under current versus potential reduced net metering rules.
Net metering policy can make or break your solar investment. Don’t rely on national averages — get a personalized savings estimate that factors in your state’s actual net metering rules, time-of-use rates, and electricity costs.
Our Solar Panel Savings Calculator models your exact situation: current NEM policy, battery economics, federal and state incentives, and realistic 25-year savings projections.
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Understanding your net metering policy today could save you $20,000+ over your system’s lifetime.