Solar Payback in New Mexico: Highest Sun Hours in the US

New Mexico has the highest daily peak sun hours of any US state at 6.8 hours/day. The state’s 10% solar tax credit (capped at $6,000) stacks on the federal 30% ITC. Combined with excellent production rates, NM solar typically pays back in 7-9 years.

Use the calculator below — your state is already selected. Adjust your monthly electric bill and system cost for a New Mexico-specific payback estimate.

Solar Payback Calculator (by State)

Estimate your system size, total cost after incentives, and break-even year for residential solar.

Average across the year. Used to size the system.
Auto-filled from state average. Override with your real rate from your utility bill.
2024 national avg ~$2.85/W gross, before incentives. Quotes range $2.50-3.50.
US average ~2.8% over last 25 years. EIA forecasts ~3% through 2050.

Estimated payback period

Select your state to get a precise estimate.

System size

25-year savings

Net cost after credits

Year-1 savings

Cost breakdown

Net out-of-pocket$0
Get free solar quotes from local installers

Estimates only. Real solar quotes depend on your roof, shading, local installer pricing, utility net-metering policy, and your specific tax situation for the federal credit. Not financial advice.

Cumulative savings vs. system cost

When the green line crosses the dashed cost line, you’ve broken even.

NM solar incentive stack

1. Federal 30% ITC

Standard.

2. New Mexico 10% Solar Tax Credit

10% of installed cost, capped at $6,000. On a $25K system, that's $2,500 (you don't hit the cap).

3. Sales tax exemption

NM solar PV equipment is exempt from state gross receipts tax (NM's version of sales tax).

4. Property tax exemption

NM excludes solar's added value from property tax.

5. Net metering

PNM (largest utility) offers net metering at retail rate for residential systems.

2026 NM solar economics

  • Gross system cost (7 kW): $18,200 ($2.60/W — NM competitive market)
  • Federal 30% ITC: -$5,460
  • NM 10% credit: -$1,820
  • Net cost: $10,920
  • Annual production: ~14,000 kWh (best sun in US)
  • Annual savings at $0.14/kWh: ~$1,960
  • Simple payback: ~5.6 years

How to use the New Mexico solar calculator above

  1. The state is pre-selected. Adjust if needed.
  2. Enter your typical monthly electric bill (averaged across the year).
  3. The calculator auto-fills your state's average electricity rate and peak sun hours — override the electricity rate with your real $/kWh from your bill if you know it.
  4. Adjust the system cost per watt based on quotes from local installers. New Mexico averages are typically within the $2.50–$3.50/W range for cash installs.
  5. The output shows estimated system size, net cost after federal and state credits, year-1 savings, and 25-year cumulative savings.

Related

Reviewed by the CalcCottage editorial team. Updated May 14, 2026. Estimates only — not financial advice. Verify current incentives at DSIRE.org before installing.

Solar payback in other states