New Mexico is one of the strongest solar markets in the country in 2026 — and it's not getting the attention it deserves. At 6.5 peak sun hours per day, it ties Arizona for best sun in the contiguous U.S. At $0.147/kWh (PNM), rates are modest but the combination with outstanding sun and a genuinely useful state tax credit creates payback estimates of 7–10 years. For a state without the federal credit, that's exceptional.
Disclaimer: All cost and savings estimates use Lawrence Berkeley National Laboratory Tracking the Sun 2024 cost data and EIA Electric Power Monthly 2025 rate data. Section 25D residential solar credits expired December 31, 2025. Get at least three installer quotes before deciding.
Key Takeaways
- New Mexico averages 6.5 peak sun hours/day — tied for the best in the contiguous U.S.
- New Mexico’s 10% solar state tax credit (max $6,000 per year, up to $9,000 cumulative) is one of only two remaining active residential solar credits in the Mountain West
- PNM (Public Service Company of NM) offers full retail net metering at $0.147/kWh
- Estimated payback: 7–10 years for most Albuquerque-area homeowners
New Mexico Solar Costs in 2026
New Mexico's install market is lean — approximately $2.60–$2.80/watt, below the national median. A 9 kW system in Albuquerque costs roughly $23,400–$25,200. The state's 10% income tax credit (capped at $6,000/year, $9,000 cumulative) applies directly against your New Mexico state income tax bill, reducing net system cost substantially.
| System Size | Cost at $2.70/W | After NM 10% State Credit | Annual Production (6.5 hrs) |
|---|---|---|---|
| 7 kW | $18,900 | $17,010 (–$1,890) | ~16,600 kWh |
| 9 kW | $24,300 | $21,870 (–$2,430) | ~21,400 kWh |
| 11 kW | $29,700 | $23,700 (–$6,000 cap) | ~26,200 kWh |
Note: the 10% credit is limited to $6,000/year with a $9,000 cumulative cap over multiple years. Larger systems may need to claim across two tax years to capture the full benefit on systems where 10% exceeds $6,000.
New Mexico's 10% Solar Tax Credit
New Mexico's Sustainable Building Tax Credit for Solar provides a 10% credit on the cost of solar PV systems for residential homeowners. As of 2026, it's one of the few genuinely active residential solar credits in the Mountain West after the federal Section 25D credit expired.
Key details:
- Credit rate: 10% of eligible installation costs
- Annual cap: $6,000 per taxpayer per year
- Cumulative cap: $9,000 total per installation
- Credit type: New Mexico state income tax credit (nonrefundable, with carryforward)
- Eligible costs: solar panels, inverters, racking, and related installation labor
According to Lawrence Berkeley National Laboratory's Tracking the Sun 2024, New Mexico's combination of outstanding insolation and an active state credit positions it among the top 10 states for solar ROI — unusual given its smaller population and less-discussed solar market.
PNM Net Metering and Export Policy
Public Service Company of New Mexico (PNM) offers full retail rate net metering for residential solar systems. Every kWh exported to the PNM grid earns a credit at the same $0.147/kWh you'd pay to buy it back. Annual net excess generation — if you produce more than you consume over the 12-month cycle — is settled at a slightly lower rate, but for most right-sized systems, this is rarely a factor.
This is meaningfully better than what Texas (avoided cost), California (NEM 3.0), or Hawaii (CGS) offer. PNM's full retail net metering means system sizing to 80–100% of annual consumption is fully supported — exports earn real money rather than pennies.
| State | Avg. Rate | Export Rate | Peak Sun Hrs | Est. Payback (9 kW) |
|---|---|---|---|---|
| New Mexico | $0.147/kWh | Full retail ($0.147) | 6.5 | 7–10 years |
| Texas (ERCOT) | $0.131/kWh | $0.03–$0.07 | 5.7 | 13–16 years |
| California | $0.282/kWh | $0.05–$0.08 (NEM 3.0) | 6.5 | 5–8 years |
| Arizona (APS) | $0.134/kWh | $0.07–$0.09 | 6.5 | 7–9 years |
What to Do Next
Confirm your New Mexico tax liability before counting on the full credit.
The 10% credit is nonrefundable — it reduces your NM state income tax bill but doesn’t generate a refund if you owe less than the credit amount. If your typical NM tax bill is $2,000–$3,000, you’ll carry forward unused credit (carryforward provisions apply). Consult your tax professional to model the timing.
Take advantage of New Mexico’s competitive install market.
At $2.60–$2.80/watt, New Mexico installers are already pricing below national norms. Still get three competing quotes — the difference between the first and third quote can reach $2,000–$4,000 on a typical system. Use EnergySage or SolarReviews to access New Mexico installers without fielding cold calls.
Run your personalized ROI with 6.5 sun hours and your PNM rate.
New Mexico’s sun is the state’s most underappreciated solar asset. An 8–10 kW system producing 19,000–24,000 kWh/year is genuinely exceptional. Use your actual annual kWh usage and PNM rate to calculate a defensible payback number before any installer conversations.
See your New Mexico payback in one minute
Enter your PNM rate, annual usage, and ZIP code — get an estimate with the NM state credit applied and no email required.
Adding an EV to the mix? New Mexico’s 6.5 peak sun hours mean your solar system will produce substantial excess power mid-day — perfect for EV charging. Our Whole-Home Bundle Calculator shows how solar and an EV combine to reduce your total energy costs.
Bottom Line
New Mexico is an underrated solar market. The combination of 6.5 peak sun hours (best in the contiguous U.S.), an active 10% state tax credit (up to $6,000), full retail net metering from PNM, and below-average install costs produces payback periods of 7–10 years — competitive with any state in the country after the federal credit expired. If you're a PNM customer in Albuquerque, Las Cruces, or Santa Fe and own your home, the numbers are compelling.
Related Guides
- Solar Panel Cost by State in 2026 — See how New Mexico compares to every other state for costs and incentives.
- Is Solar Worth It in 2026? — National payback analysis to put New Mexico’s numbers in context.
- Net Metering Guide 2026 — How PNM’s full retail net metering compares to other southwestern states.
- Home Solar Panels: The Complete 2026 Guide — Everything you need to know before getting your first solar quote.
